50 C.F.R. § 17.95(h)

Current through October 31, 2024
Section 17.95(h) - Critical habitat-fish and wildlife
(h)Crustaceans.

Diminutive amphipod (Gammarus hyalleloides)

(1) Critical habitat units are depicted for Jeff Davis County and Reeves County, Texas, on the maps below.
(2) Within these areas, the primary constituent elements of the physical or biological features essential to the conservation of diminutive amphipod are springs and spring-fed aquatic systems that contain:
(i) Permanent, flowing, unpolluted water (free from contamination) emerging from the ground and flowing on the surface;
(ii) Water temperatures that vary between 11 and 27 °C (52 to 81 °F) with natural seasonal and diurnal variations slightly above and below that range;
(iii) Substrates that include cobble, gravel, pebble, sand, silt, and aquatic vegetation, for breeding, maturing, feeding, and escape from predators;
(iv) Abundant food, consisting of algae, bacteria, decaying organic material, and submergent vegetation that contributes the necessary nutrients, detritus, and bacteria on which these species forage; and
(v) Either an absence of nonnative predators and competitors or nonnative predators and competitors at low population levels.
(3) Critical habitat does not include manmade structures (such as buildings, aqueducts, well pads, roads, and other paved areas) and the land on which they are located existing within the legal boundaries on August 8, 2013.
(4)Critical habitat map units. Data layers defining map units were created on 2010 aerial photography from U.S. Department of Agriculture, National Agriculture Imagery Program base maps using ArcMap (Environmental Systems Research Institute, Inc.), a computer geographic information system (GIS) program. The maps in this entry, as modified by any accompanying regulatory text, establish the boundaries of the critical habitat designation. The coordinates or plot points or both on which each map is based are available to the on the internet at http://www.regulations.gov at Docket No. FWS-R2-ES-2013-0004 and at the field office responsible for this designation. You may obtain field office location information by contacting one of the Service regional offices, the addresses of which are listed at 50 CFR 2.2 .
(5) San Solomon Spring Unit, Reeves County, Texas. Map of San Solomon Spring Unit follows:

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(6) Giffin Spring Unit, Reeves County, Texas. Map of Giffin Spring Unit is provided at paragraph (5) of this entry.
(7) East Sandia Spring Unit, Reeves County, Texas. Map of East Sandia Spring Unit follows:

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(8) Phantom Lake Spring Unit, Jeff Davis County, Texas. Map of Phantom Lake Spring Unit follows:

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Kauai Cave Amphipod (Spelaeorchestia koloana)

(1) Critical habitat units are depicted for the island of Kauai, Hawaii, on the maps below. The maps provided are for informational purposes only.
(2) The primary constituent elements for the Kauai cave amphipod are:
(i) The presence of subterranean spaces from 5 mm to 25 cm (0.2 in to 10 in) at their narrowest point (collectively termed "mesocaverns") and/or cave passages greater than 25 cm ([GREATER THAN]10 in);
(ii) Dark and/or stagnant air zones that maintain relative humidity at saturation levels ([GREATER THAN EQUAL TO]100 percent); and
(iii) The presence in these types of mesocaverns or caves of roots from living, nontoxic plants such as, but not limited to, ohia (Metrosideros polymorpha), maiapilo (Capparis sandwichiana), and aalii (Dodonea viscosa).
(3) All critical habitat areas contain one or more of the primary constituent elements for the Kauai cave amphipod.
(4)
(i) Existing human-constructed features and structures within the boundaries of mapped units that involved trenching, filling, or excavation resulting in below-surface modification or alteration would not contain either of the primary constituent elements and are excluded from critical habitat designation. Such features and structures include but are not limited to: Homes and buildings for which the underlying bedrock has been altered for their construction or through incorporation of or connection to buried structural foundations, septic tanks, city sewage and drainage systems, or water or underground electrical supply corridors; paved roads; and areas previously or currently used as a quarry.
(ii) Areas that have been modified on the surface but without trenching, filling, or excavation resulting in below-surface modification or alteration are included in the critical habitat designation, even if they are adjacent to areas that have undergone below-surface modification.
(5) Critical habitat units are described below. Coordinates in UTM Zone 4 with units in meters using North American Datum of 1983 (NAD83). The following map shows the general locations of the 14 critical habitat units designated on the island of Kauai.
(i) NOTE: Map 1-Index map follows:

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(6) Unit 1-([LESS THAN]1 ha (1 ac)):
(i) Unit 1 consists of the following 10 boundary points with the following coordinates in UTM Zone 4, with the units in meters, using North American Datum of 1983 (NAD83): Start at 450554, 2420457; 450546, 2420468; 450576, 2420510; 450586, 2420518; 450607, 2420516; 450624, 2420502; 450625, 2420480; 450618, 2420452; 450600, 2420437; 450574, 2420434; return to starting point.
(ii) NOTE: Unit 1 is depicted on Map 2-Units 1, 2, 3, and 4-below.
(7) Unit 2-(7 ha (16 ac)):
(i) Unit 2 consists of the following 16 boundary points with the following coordinates in UTM Zone 4, with the units in meters, using North American Datum of 1983 (NAD83): Start at 451483, 2420974; 451539, 2420991; 451583, 2421015; 451622, 2421014; 451667, 2420984; 451677, 2420926; 451680, 2420869; 451705, 2420799; 451622, 2420769; 451650, 2420664; 451488, 2420620; 451468, 2420624; 451433, 2420642; 451470, 2420758; 451501, 2420801; 451510, 2420870; return to starting point.
(ii) NOTE: Unit 2 is depicted on Map 2-Units 1, 2, 3, and 4-below.
(8) Unit 3-(6 ha (16 ac)):
(i) Unit 3 consists of the following 14 boundary points with the following coordinates in UTM Zone 4, with the units in meters using North American Datum of 1983 (NAD83): Start at 450881, 2419947; 450879, 2419981; 450855, 2420053; 450859, 2420089; 450903, 2420089; 451012, 2420125; 451058, 2420191; 451138, 2420180; 451184, 2420119; 451159, 2420048; 451194, 2420014; 451183, 2419982; 451136, 2419987; 451114, 2419892; return to starting point.
(ii) NOTE: Unit 3 is depicted on Map 2-Units 1, 2, 3, and 4-below.
(9) Unit 4-(2 ha (6 ac)):
(i) Unit 4 consists of the following 33 boundary points with the following coordinates in UTM Zone 4, with the units in meters using North American Datum of 1983 (NAD83): Start at 452087, 2419809; 452063, 2419804; 452053, 2419805; 452040, 2419807; 452027, 2419811; 452007, 2419824; 451994, 2419844; 451989, 2419867; 451994, 2419890; 452007, 2419910; 452027, 2419923; 452045, 2419927; 452053, 2419932; 452076, 2419936; 452082, 2419936; 452084, 2419936; 452090, 2419939; 452095, 2419942; 452096, 2419943; 452118, 2419954; 452145, 2419960; 452168, 2419955; 452188, 2419942; 452201, 2419922; 452206, 2419899; 452201, 2419876; 452188, 2419856; 452172, 2419844; 452153, 2419835; 452132, 2419822; 452123, 2419817; 452099, 2419812; 452093, 2419812; return to starting point.
(ii) NOTE: Unit 4 is depicted on Map 2-Units 1, 2, 3, and 4-which follows:

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(10) Unit 5-(1 ha (2 ac)):
(i) Unit 5 consists of the following 35 boundary points with the following coordinates in UTM Zone 4, with the units in meters using North American Datum of 1983 (NAD83): Start at 452493, 2420608; 452493, 2420613; 452493, 2420616; 452496, 2420639; 452492, 2420652; 452491, 2420660; 452492, 2420669; 452497, 2420683; 452498, 2420686; 452502, 2420694; 452516, 2420711; 452518, 2420713; 452528, 2420720; 452540, 2420722; 452552, 2420720; 452561, 2420713; 452568, 2420704; 452570, 2420692; 452568, 2420680; 452564, 2420673; 452553, 2420660; 452556, 2420649; 452557, 2420641; 452557, 2420637; 452554, 2420613; 452555, 2420611; 452555, 2420607; 452553, 2420595; 452546, 2420585; 452536, 2420579; 452525, 2420576; 452513, 2420579; 452503, 2420585; 452496, 2420595; 452494, 2420602; return to starting point.
(ii) Unit 5 is depicted on Map 3-Units 5, 6, 7, and 8-below.
(11) Unit 6-(2 ha (4 ac)):
(i) Unit 6 consists of the following 21 boundary points with the following coordinates in UTM Zone 4, with the units in meters using North American Datum of 1983 (NAD83): Start at 453052, 2420607; 453065, 2420616; 453078, 2420622; 453101, 2420626; 453126, 2420621; 453139, 2420616; 453154, 2420606; 453164, 2420591; 453167, 2420579; 453169, 2420551; 453165, 2420533; 453156, 2420517; 453141, 2420500; 453127, 2420490; 453109, 2420486; 453078, 2420490; 453053, 2420505; 453042, 2420522; 453034, 2420543; 453032, 2420559; 453036, 2420585; return to starting point.
(ii) Unit 6 is depicted on Map 3-Units 5, 6, 7, and 8-below.
(12) Unit 7-(3 ha (9 ac)):
(i) Unit 7 consists of the following 7 boundary points with the following coordinates in UTM Zone 4, with the units in meters using North American Datum of 1983 (NAD83): Start at 452623, 2421100; 452812, 2421077; 452831, 2421041; 452816, 2421016; 452786, 2420896; 452590, 2420946; 452608, 2421015; return to starting point.
(ii) Unit 7 is depicted on Map 3-Units 5, 6, 7, and 8-below.
(13) Unit 8-(2 ha (7 ac)):
(i) Unit 8 consists of the following 33 boundary points with the following coordinates in UTM Zone 4, with the units in meters using North American Datum of 1983 (NAD83): Start at 452763, 2421383; 452759, 2421402; 452760, 2421421; 452767, 2421462; 452766, 2421477; 452768, 2421497; 452771, 2421510; 452780, 2421523; 452812, 2421556; 452824, 2421564; 452831, 2421567; 452848, 2421571; 452857, 2421571; 452875, 2421567; 452890, 2421557; 452899, 2421542; 452904, 2421531; 452907, 2421514; 452908, 2421497; 452904, 2421480; 452899, 2421471; 452902, 2421454; 452900, 2421439; 452894, 2421422; 452891, 2421412; 452891, 2421402; 452888, 2421385; 452880, 2421368; 452871, 2421355; 452844, 2421338; 452822, 2421335; 452799, 2421339; 452778, 2421357; return to starting point.
(ii) Unit 8 is depicted on Map 3-Units 5, 6, 7, and 8-which follows:

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(14) Unit 9-(1 ha (4 ac)):
(i) Unit 9 consists of the following 5 boundary points with the following coordinates in UTM Zone 4, with the units in meters using North American Datum of 1983 (NAD83): Start at 452568, 2422604; 452577, 2422610; 452696, 2422521; 452580, 2422429; 452537, 2422471; return to starting point.
(ii) NOTE: Unit 9 is depicted on Map 4-Units 9 and 10-below.
(15) Unit 10-(14 ha (35 ac)):
(i) Unit 10 consists of the following 14 boundary points with the following coordinates in UTM Zone 4, with the units in meters using North American Datum of 1983 (NAD83): Start at 452688, 2421988; 452834, 2422427; 453145, 2422210; 453061, 2422147; 453053, 2422133; 453053, 2422102; 453061, 2422078; 453074, 2422029; 453002, 2421944; 453015, 2421922; 453022, 2421892; 452896, 2421910; 452733, 2421917; 452705, 2421959; return to starting point.
(ii) NOTE: Unit 10 is depicted on Map 4-Units 9 and 10-which follows:

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(16) Unit 11-(4 ha (10 ac)):
(i) Unit 11 consists of the following 17 boundary points with the following coordinates in UTM Zone 4, with the units in meters using North American Datum of 1983 (NAD83): Start at 453958, 2419773; 453976, 2419766; 453999, 2419741; 454054, 2419702; 454068, 2419667; 454060, 2419596; 454042, 2419553; 454005, 2419528; 453962, 2419521; 453894, 2419545; 453872, 2419573; 453862, 2419600; 453852, 2419642; 453862, 2419676; 453887, 2419718; 453912, 2419742; 453936, 2419768; return to starting point.
(ii) NOTE: Unit 11 is depicted on Map 5-Units 11 and 12-below.
(17) Unit 12 (6 ha (16 ac)):
(i) Unit 12 consists of the following 21 boundary points with the following coordinates in UTM Zone 4, with the units in meters using North American Datum of 1983 (NAD83): Start at 454185, 2420229; 454242, 2420243; 454326, 2420241; 454387, 2420207; 454420, 2420147; 454475, 2420133; 454502, 2420080; 454474, 2420055; 454366, 2419954; 454341, 2419944; 454321, 2419921; 454311, 2419895; 454286, 2419903; 454264, 2419927; 454229, 2419962; 454208, 2419993; 454186, 2420038; 454169, 2420058; 454145, 2420086; 454112, 2420103; 454120, 2420133; return to starting point.
(ii) NOTE: Unit 12 is depicted on Map 5-Units 11 and 12-which follows:

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(18) Unit 13-(21 ha (52 ac)):
(i) Unit 13 consists of the following 43 boundary points with the following coordinates in UTM Zone 4, with the units in meters using North American Datum of 1983 (NAD83): Start at 457108, 2420666; 457027, 2420606; 456763, 2420391; 456727, 2419912; 456456, 2419772; 455868, 2419764; 455633, 2419645; 455601, 2419531; 455389, 2419219; 455225, 2419029; 455014, 2418947; 455014, 2419015; 454926, 2419043; 455027, 2419064; 455102, 2419103; 455202, 2419192; 455255, 2419258; 455300, 2419334; 455508, 2419515; 455586, 2419614; 455664, 2419674; 455767, 2419730; 455859, 2419764; 455969, 2419780; 456212, 2419805; 456272, 2419811; 456376, 2419831; 456451, 2419859; 456531, 2419900; 456583, 2419935; 456627, 2419981; 456656, 2420036; 456682, 2420173; 456709, 2420316; 456718, 2420343; 456704, 2420433; 456723, 2420583; 456747, 2420580; 456771, 2420584; 456786, 2420569; 456848, 2420572; 456979, 2420634; 457022, 2420649; return to starting point.
(ii) NOTE: Unit 13 is depicted on Map 6-Unit 13-which follows:

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(19) Unit 14-(39 ha (96 ac)):
(i) Unit 14 consists of the following 47 boundary points with the following coordinates in UTM Zone 4, with the units in meters using North American Datum of 1983 (NAD83): Coastline. 457575, 2420977; 457548, 2420981; 457598, 2421002; 457624, 2421039; 457624, 2421039; 457624, 2421039; 457664, 2421105; 457715, 2421146; 457755, 2421170; 457901, 2421204; 458025, 2421342; 458025, 2421367; 458078, 2421412; 458078, 2421413; 458078, 2421413; 458184, 2421510; 458226, 2421607; 458226, 2421607; 458226, 2421607; 458259, 2421727; 458308, 2421809; 458371, 2421876; 458405, 2421905; 458237, 2422080; 458301, 2422271; 458346, 2422339; 458686, 2422403; 458785, 2422371; 458932, 2422252; 458997, 2422153; Coastline. 458706, 2421920; 458670, 2421988; 458662, 2422059; 458688, 2422116; 458778, 2422112; 458809, 2422160; 458719, 2422266; 458630, 2422266; 458556, 2422191; 458563, 2422061; 458479, 2421989; 458500, 2421803.
(ii) NOTE: Unit 14 is depicted on Map 7-Unit 14-which follows:

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Noel's amphipod (Gammarus desperatus)

(1) Critical habitat units are depicted for Chaves County, New Mexico, on the maps below.
(2) The primary constituent element of critical habitat for Noel's amphipod is springs and spring-fed wetland systems that:
(i) Have permanent, flowing water with no or no more than low levels of pollutants;
(ii) Have slow to moderate water velocities;
(iii) Have substrates including limestone cobble and aquatic vegetation;
(iv) Have stable water levels with natural diurnal (daily) and seasonal variations;
(v) Consist of fresh to moderately saline water;
(vi) Have minimal sedimentation;
(vii) Vary in temperature between 50-68 °F (10-20 °C) with natural seasonal and diurnal variations slightly above and below that range; and
(viii) Provide abundant food, consisting of:
(A) Submergent vegetation and decaying organic matter;
(B) A surface film of algae, diatoms, bacteria, and fungi; and
(C) Microbial foods, such as algae and bacteria, associated with aquatic plants, algae, bacteria, and decaying organic material.
(3) Critical habitat does not include manmade structures (such as buildings, aqueducts, runways, roads, and other paved areas) and the land on which they are located existing within the legal boundaries on the effective date of this rule.
(4)Critical habitat map units. Data layers defining map units were created on a base of USGS 1:24,000 maps, and critical habitat units were then mapped using Universal Transverse Mercator (UTM) coordinates.
(5) Unit 1: Sago/Bitter Creek Complex, Chaves County, New Mexico.
(i) [Reserved]
(ii) Map of Noel's Amphipod Critical Habitat Units 1 and 2a follows:

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(6) Unit 2a: Springsnail/Amphipod Impoundment Complex, Chaves County, New Mexico.
(i) [Reserved]
(ii) Map of Unit 2a for Noel's amphipod is provided at paragraph (5)(ii) of this entry.
(7) Unit 3: Rio Hondo, Chaves County, New Mexico.
(i) [Reserved]
(ii) Map of Noel's Amphipod Critical Habitat Unit 3 follows:

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Peck's Cave Amphipod (Stygobromus pecki)

(1) Critical habitat units are depicted for this species in Comal County, Texas, on the maps below.
(2) Within these areas, the primary constituent elements of the physical or biological features essential to the conservation of Peck's cave amphipod consist of these components:
(i) Springs, associated streams, and underground spaces immediately inside of or adjacent to springs, seeps, and upwellings that include:
(A) High-quality water with no or minimal pollutant levels of soaps, detergents, heavy metals, pesticides, fertilizer nutrients, petroleum hydrocarbons, and semivolatile compounds such as industrial cleaning agents; and
(B) Hydrologic regimes similar to the historical pattern of the specific sites, with continuous surface flow from the spring sites and in the subterranean aquifer;
(ii) Spring system water temperatures that range from approximately 68 to 75 °F (20 to 24 °C); and
(iii) Food supply that includes, but is not limited to, detritus (decomposed materials), leaf litter, living plant material, algae, fungi, bacteria, other microorganisms, and decaying roots.
(3) Critical habitat does not include manmade structures (such as buildings, aqueducts, runways, roads, and other paved areas) and the land on which they are located existing on the surface within the legal boundaries on November 22, 2013.
(4)Critical habitat map units. Data layers defining map units were created using geographic information systems (GIS), which included species locations, roads, property boundaries, 2011 aerial photography, and USGS 7.5' quadrangles. Points were placed in the GIS. The maps in this entry, as modified by any accompanying regulatory text, establish the boundaries of the critical habitat designation. The coordinates or plot points or both on which each map is based are available to the public at the Service's Internet site at http://www.fws.gov/southwest/es/austintexas/, at http://www.regulations.gov at Docket No. FWS-R2-ES-2012-0082, and at the field office responsible for this critical habitat designation. You may obtain field office location information by contacting one of the Service regional offices, the addresses of which are listed at 50 CFR 2.2 .
(5) The index map of the critical habitat units for the Peck's cave amphipod follows:

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(6) Unit 1: Comal Springs Unit, Comal County, Texas. Map of the Comal Springs Unit follows:

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(7) Unit 2: Hueco Springs Unit, Comal County, Texas. Map of the Hueco Springs Unit follows:

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Pecos amphipod (Gammarus pecos)

(1) The critical habitat unit is depicted for Pecos County, Texas, on the map below.
(2) Within this area, the primary constituent elements of the physical or biological features essential to the conservation of Pecos amphipod are springs and spring-fed aquatic systems that contain:
(i) Permanent, flowing, unpolluted water (free from contamination) emerging from the ground and flowing on the surface;
(ii) Water temperatures that vary between 11 and 27 °C (52 to 81 °F) with natural seasonal and diurnal variations slightly above and below that range;
(iii) Substrates that include cobble, gravel, pebble, sand, silt, and aquatic vegetation, for breeding, maturing, feeding, and escape from predators;
(iv) Abundant food, consisting of algae, bacteria, decaying organic material, and submergent vegetation that contributes the necessary nutrients, detritus, and bacteria on which these species forage; and
(v) Either an absence of nonnative predators and competitors or nonnative predators and competitors at low population levels.
(3) Critical habitat does not include manmade structures (such as buildings, aqueducts, oil and gas well pads, roads, and other paved areas) and the land on which they are located existing within the legal boundaries on the effective date of this rule.
(4) Critical habitat map units. Data layers defining map units were created on 2010 aerial photography from U.S. Department of Agriculture, National Agriculture Imagery Program base maps using ArcMap (Environmental Systems Research Institute, Inc.), a computer geographic information system (GIS) program. The maps in this entry, as modified by any accompanying regulatory text, establish the boundaries of the critical habitat designation. The coordinates or plot points or both on which each map is based are available to the public on the internet at http://www.regulations.gov at Docket No. FWS-R2-ES-2013-0004 and at the field office responsible for this designation. You may obtain field office location information by contacting one of the Service regional offices, the addresses of which are listed at 50 CFR 2.2 .
(5) Diamond Y Spring Unit, Pecos County, Texas. Map of Diamond Y Spring Unit follows:

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Big Creek Crayfish (Faxonius peruncus)

(1) The critical habitat unit is depicted for Iron, Madison, St. Francois, Washington, and Wayne Counties in Missouri, on the map in this entry.
(2) Within the critical habitat unit, the physical or biological features essential to the conservation of the Big Creek crayfish consist of the following components:
(i) Stream flow velocity generally between 0 and 1.1 feet per second (ft/s) (0 and 0.35 meters per second (m/s)).
(ii) Stream depths generally between 0.2 and 1.6 feet (0.06 and 0.49 meters).
(iii) Water temperatures between 34 and 84 °F (1.1 and 28.9 °C).
(iv) Adequately low stream embeddedness so that spaces under rocks and cavities in gravel remain available to the Big Creek crayfish.
(v) An available forage and prey base consisting of invertebrates, periphyton, and plant detritus.
(vi) Connectivity among occupied stream reaches of the Big Creek crayfish (both within and among occupied subwatersheds).
(vii) Adequately low ratios or densities of nonnative species that allow for maintaining populations of the Big Creek crayfish.
(3) Critical habitat does not include manmade structures (such as buildings, aqueducts, runways, roads, and other paved areas) and the land on which they are located existing within the legal boundaries on May 30, 2023.
(4) The National Hydrography Dataset Plus (NHDPlus) was the geospatial data used to delineate critical habitat. NHDPlus is a national geospatial surface water framework that integrates the National Hydrography Dataset with the National Elevation Dataset and the Watershed Boundary Dataset. NHDPlus uses medium resolution (1:100,000-scale) data with a geographic projection and NAD83 datum. Critical habitat was delineated by including all streams within subwatersheds (at the 12-digit hydrologic unit level) occupied by the Big Creek crayfish. Occupied watersheds were defined using data from the Missouri Department of Conservation; the entire St. Francis River upstream of 37.091254N, 90.447212W is also considered occupied as a migratory route. The map in this entry, as modified by any accompanying regulatory text, establishes the boundaries of the critical habitat designation. The coordinates or plot points or both on which the map is based are available to the public at https://www.regulations.gov under Docket No. FWS-R3-ES-2019-0020 and at the Missouri Ecological Services Field Office. You may obtain field office location information by contacting one of the Service regional offices, the addresses of which are listed at 50 CFR 2.2 .
(5) Big Creek Crayfish Unit-Iron, Madison, St. Francois, Washington, and Wayne Counties, Missouri.
(i) The unit consists of all of the streams (approximately 1,069 river miles (1,720 kilometers)) upstream of Wappapello Dam in the following subwatersheds (numbers in parentheses represent the 12-digit hydrologic codes): Big Lake Creek-St. Francis River (080202020503), Blankshire Branch-St. Francis River (080202020204), Captain Creek-St. Francis River (080202020405), Cedar Bottom Creek-St. Francis River (080202020402), Clark Creek (080202020407), Cedar Bottom Creek (080202020501), Crane Pond Creek (080202020303), Headwaters St. Francis River (080202020201), Headwaters Twelvemile Creek (080202020403), Leatherwood Creek-St. Francis River (080202020406), Lower Big Creek (080202020304), Middle Big Creek (080202020302), Saline Creek-Little St. Francis River (080202020102), Turkey Creek-St. Francis River (080202020210), Twelvemile Creek (080202020404), and Upper Big Creek (080202020301). The unit also consists of the entire St. Francis River upstream of 37.091254N, 90.447212W. The unit does not include any areas of adjacent land. This unit includes stream habitat up to bank full height.
(ii) Map of Big Creek Crayfish Unit of Big Creek crayfish critical habitat follows:

Figure 1 for Big Creek Crayfish (Faxonius peruncus) paragraph (5)(ii)

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Big Sandy Crayfish (Cambarus callainus)

(1) Critical habitat units are depicted for Martin, Pike, Johnson, and Floyd Counties, Kentucky; Buchanan, Dickenson, and Wise Counties, Virginia; and McDowell, Mingo, and Wayne Counties, West Virginia, on the maps in this entry.
(2) Within these areas, the physical or biological features essential to the conservation of the Big Sandy crayfish consist of the following components:
(i) Fast-flowing stream reaches with unembedded slab boulders, cobbles, or isolated boulder clusters within an unobstructed stream continuum (i.e., riffle, run, pool complexes) of permanent, moderate- to large-sized (generally third order and larger) streams and rivers (up to the ordinary high water mark as defined at 33 CFR 329.11 ).
(ii) Streams and rivers with natural variations in flow and seasonal flooding sufficient to effectively transport sediment and prevent substrate embeddedness.
(iii) Water quality characterized by seasonally moderated temperatures and physical and chemical parameters (e.g., pH, conductivity, dissolved oxygen) sufficient for the normal behavior, growth, reproduction, and viability of all life stages of the species.
(iv) An adequate food base, indicated by a healthy aquatic community structure including native benthic macroinvertebrates and fishes, and plant matter (e.g., leaf litter, algae, detritus).
(v) Aquatic habitats protected from riparian and instream activities that degrade the physical and biological features described in paragraphs (2)(i) through (iv) of this entry or cause physical (e.g., crushing) injury or death to individual Big Sandy crayfish.
(vi) An interconnected network of streams and rivers that have the physical and biological features described in paragraphs (2)(i) through (iv) of this entry and that allow for the movement of individual crayfish in response to environmental, physiological, or behavioral drivers. The scale of the interconnected stream network should be sufficient to allow for gene flow within and among watersheds.
(3) Critical habitat does not include manmade structures (such as buildings, aqueducts, runways, roads, and other paved areas) and the land on which they are located existing within the legal boundaries on April 14, 2022.
(4) Data layers defining map units were created on a base of U.S. Geological Survey digital ortho-photo quarter-quadrangles, and critical habitat units were then mapped using Universal Transverse Mercator (UTM) Zone 15N coordinates. ESRI's ArcGIS 10.0 software was used to determine latitude and longitude coordinates using decimal degrees. The USA Topo ESRI online basemap service was referenced to identify features (like roads and streams) used to delineate the upstream and downstream extents of critical habitat units. The maps in this entry, as modified by any accompanying regulatory text, establish the boundaries of the critical habitat designation. The coordinates or plot points or both on which each map is based are available to the public at the Service's internet site at https://www.fws.gov/westvirginiafieldoffice/, at https://www.regulations.gov at Docket No. FWS-R5-ES-2019-0098, and at the field office responsible for this designation. You may obtain field office location information by contacting one of the Service regional offices, the addresses of which are listed at 50 CFR 2.2 .
(5) Index map of critical habitat Units 1 and 2 for the Big Sandy crayfish follows:

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(6) Unit 1: Upper Levisa Fork-Dismal Creek, Buchanan County, Virginia.
(i) Unit 1 includes approximately 29.2 stream kilometers (skm) (18.1 smi) of Dismal Creek from its confluence with Laurel Fork downstream to its confluence with Levisa Fork in Buchanan County, Virginia.
(ii) Map of Unit 1 follows:

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(7) Unit 2: Russell Fork-Buchanan, Dickenson, and Wise Counties, Virginia, and Pike County, Kentucky.
(i) Subunit 2a: Russell Fork, Buchanan and Dickenson Counties, Virginia, and Pike County, Kentucky.
(A) Subunit 2a consists of approximately 83.8 skm (52.1 smi) of Russell Fork from its confluence with Ball Creek at Council, Virginia, downstream to its confluence with Levisa Fork at Levisa Junction, Kentucky.
(B) Map of Subunit 2a follows:

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(ii) Subunit 2b: Hurricane Creek, Buchanan County, Virginia.
(A) Subunit 2b consists of approximately 5.9 skm (3.7 smi) of Hurricane Creek from its confluence with Gilbert Fork downstream to its confluence with Russell Fork at Davenport, Virginia.
(B) Map of Subunit 2b follows:

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(iii) Subunit 2c: Indian Creek, Buchanan and Dickenson Counties, Virginia.
(A) Subunit 2c consists of approximately 7.4 skm (4.6 smi) of Indian Creek from its confluence with Three Forks in Buchanan County, Virginia, downstream to its confluence with Russell Fork in Buchanan and Dickenson Counties, Virginia.
(B) Map of Subunit 2c follows:

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(iv) Subunit 2d: Fryingpan Creek, Dickenson County, Virginia.
(A) Subunit 2d consists of approximately 4.6 skm (2.9 smi) of Fryingpan Creek from its confluence with Priest Fork downstream to its confluence with Russell Fork.
(B) Map of Subunit 2d follows:

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(v) Subunit 2e: Lick Creek, Dickenson County, Virginia.
(A) Subunit 2e consists of approximately 16.2 skm (10.1 smi) of Lick Creek from its confluence with Cabin Fork near Aily, Virginia, downstream to its confluence with Russell Fork at Birchfield, Virginia.
(B) Map of Subunit 2e follows:

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(vi) Subunit 2f: Russell Prater Creek, Dickenson County, Virginia.
(A) Subunit 2f consists of approximately 8.4 skm (5.2 smi) of Russell Prater Creek from its confluence with Greenbrier Creek downstream to its confluence with Russell Fork at Haysi, Virginia.
(B) Map of Subunit 2f follows:

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(vii) Subunit 2g: McClure River, Open Fork and McClure Creek, Dickenson County, Virginia.
(A) Subunit 2g consists of approximately 35.6 skm (22.1 smi) of the McClure River and McClure Creek from the confluence of McClure Creek and Honey Branch downstream to the confluence of McClure River and Russell Fork; and approximately 4.9 km (3.0 mi) of Open Fork from the confluence of Middle Fork Open Fork and Coon Branch downstream to the confluence of Open Fork and McClure Creek at Nora, Virginia.
(B) Map of Subunit 2g follows:

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(viii) Subunit 2h: Elkhorn Creek, Pike County, Kentucky.
(A) Subunit 2h consists of approximately 8.5 skm (5.3 smi) of Elkhorn Creek from its confluence with Mountain Branch downstream to its confluence with Russell Fork at Elkhorn City, Kentucky.
(B) Map of Subunit 2h follows:

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(ix) Subunit 2i: Cranes Nest River and Birchfield Creek, Dickenson and Wise Counties, Virginia.
(A) Subunit 2i consists of approximately 24.6 skm (19.0 smi) of the Cranes Nest River from its confluence with Birchfield Creek downstream to its confluence with Lick Branch and approximately 6.9 skm (4.3 smi) of Birchfield Creek from its confluence with Dotson Creek downstream to its confluence with Cranes Nest River.
(B) Map of Subunit 2i follows:

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(x) Subunit 2j: Pound River, Dickenson and Wise Counties, Virginia.
(A) Subunit 2j consists of approximately 28.5 skm (17.7 smi) of the Pound River from its confluence with Bad Creek downstream to the confluence of the Pound River and Jerry Branch.
(B) Map of Subunit 2j follows:

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(8) Index map of critical habitat Unit 3 for the Big Sandy crayfish follows:

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(9) Unit 3: Lower Levisa Fork-Floyd, Johnson, and Pike Counties, Kentucky.
(i) Subunit 3a: Levisa Fork, Floyd, Johnson, and Pike Counties, Kentucky.
(A) Subunit 3a consists of approximately 15.9 km (9.9 mi) of Levisa Fork from its confluence with Russell Fork at Levisa Junction, Kentucky, downstream to its confluence with Island Creek at Pikeville, Kentucky; and 17.5 skm (10.9 smi) of Levisa Fork from its confluence with Abbott Creek downstream to its confluence with Miller Creek at Auxier, Kentucky.
(B) Map of Subunit 3a follows:

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(ii) Subunit 3b: Shelby Creek and Long Fork, Pike County, Kentucky.
(A) Subunit 3b consists of approximately 32.2 skm (20.0 smi) of Shelby Creek from its confluence with Burk Branch downstream to its confluence with Levisa Fork at Shelbiana, Kentucky; and approximately 12.9 skm (8.0 smi) of Long Fork from the confluence of Right Fork Long Fork and Left Fork Long Fork downstream to the confluence of Long Fork and Shelby Creek at Virgie, Kentucky.
(B) Map of Subunit 3b follows:

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(10) Index map of critical habitat Unit 4 for the Big Sandy crayfish follows:

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(11) Unit 4: Tug Fork-McDowell, Mingo, and Wayne Counties, West Virginia; Buchanan County, Virginia; and Pike and Martin Counties, Kentucky.
(i) Subunit 4a: Tug Fork, McDowell, Mingo, and Wayne Counties, West Virginia; Buchanan County, Virginia; and Pike and Martin Counties, Kentucky.
(A) Subunit 4a consists of approximately 106.1 skm (65.9 smi) of the Tug Fork from its confluence with Elkhorn Creek at Welch, West Virginia, downstream to its confluence with Blackberry Creek in Pike County, Kentucky; and 11.7 skm (7.3 smi) of the Tug Fork from its confluence with Little Elk Creek downstream to its confluence with Bull Creek at Crum, West Virginia.
(B) Map of Subunit 4a follows:

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(ii) Subunit 4b: Dry Fork and Bradshaw Creek, McDowell County, West Virginia.
(A) Subunit 4b consists of approximately 45.2 skm (28.1 smi) of Dry Fork from its confluence with Jacobs Fork downstream to its confluence with Tug Fork at Iaeger, West Virginia; and approximately 4.6 skm (2.9 smi) of Bradshaw Creek from its confluence with Hite Fork at Jolo, West Virginia, downstream to its confluence with Dry Fork at Bradshaw, West Virginia.
(B) Map of Subunit 4b follows:

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(iii) Subunit 4c: Panther Creek, McDowell County, West Virginia.
(A) Subunit 4c consists of approximately 10.7 skm (6.6 smi) of Panther Creek from its confluence with George Branch downstream to its confluence with Tug Fork at Panther, West Virginia.
(B) Map of Subunit 4c follows:

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(iv) Subunit 4d: Knox Creek, Buchanan County, Virginia, and Pike County, Kentucky.
(A) Subunit 4d consists of approximately 16.6 skm (10.3 smi) of Knox Creek from its confluence with Cedar Branch downstream to its confluence with Tug Fork in Pike County, Kentucky.
(B) Map of Subunit 4d follows:

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(v) Subunit 4e: Peter Creek, Pike County, Kentucky.
(A) Subunit 4e consists of approximately 10.1 skm (6.3 smi) of Peter Creek from the confluence of Left Fork Peter Creek and Right Fork Peter Creek at Phelps, Kentucky, downstream to the confluence of Peter Creek and Tug Fork at Freeburn, Kentucky.
(B) Map of Subunit 4e follows:

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(vi) Subunit 4f: Blackberry Creek, Pike County, Kentucky.
(A) Subunit 4f consists of approximately 9.1 skm (5.7 smi) of Blackberry Creek its confluence with Bluespring Branch downstream to the confluence of Blackberry Creek and Tug Fork.
(B) Map of Subunit 4f follows:

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(vii) Subunit 4g: Pigeon Creek and Laurel Fork, Mingo County, West Virginia.
(A) Subunit 4g consists of approximately 14.0 skm (8.7 smi) of Pigeon Creek from its confluence with Trace Fork downstream to its confluence with Tug Fork; and approximately 11.1 skm (6.9 smi) of Laurel Fork from its confluence with Lick Branch downstream to its confluence with Pigeon Creek at Lenore, West Virginia.
(B) Map of Subunit 4g follows:

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Guyandotte River Crayfish (Cambarus veteranus)

(1) Critical habitat units are depicted for Logan and Wyoming Counties, West Virginia, on the maps in this entry.
(2) Within these areas, the physical or biological features essential to the conservation of the Guyandotte River crayfish consist of the following components:
(i) Fast-flowing stream reaches with unembedded slab boulders, cobbles, or isolated boulder clusters within an unobstructed stream continuum (i.e.. riffle, run, pool complexes) of permanent, moderate- to large-sized (generally third order and larger) streams and rivers (up to the ordinary high water mark as defined at 33 CFR 329.11 ).
(ii) Streams and rivers with natural variations in flow and seasonal flooding sufficient to effectively transport sediment and prevent substrate embeddedness.
(iii) Water quality characterized by seasonally moderated temperatures and physical and chemical parameters (e.g., pH, conductivity, dissolved oxygen) sufficient for the normal behavior, growth, reproduction, and viability of all life stages of the species.
(iv) An adequate food base, indicated by a healthy aquatic community structure including native benthic macroinvertebrates, fishes, and plant matter (e.g., leaf litter, algae, detritus).
(v) Aquatic habitats protected from riparian and instream activities that degrade the physical and biological features described in paragraphs (2)(i) through (iv) of this entry or cause physical (e.g., crushing) injury or death to individual Guyandotte River crayfish.
(vi) An interconnected network of streams and rivers that have the physical and biological features described in paragraphs (2)(i) through (iv) of this entry and that allow for the movement of individual crayfish in response to environmental, physiological, or behavioral drivers. The scale of the interconnected stream network should be sufficient to allow for gene flow within and among watersheds.
(3) Critical habitat does not include manmade structures (such as buildings, aqueducts, runways, roads, and other paved areas) and the land on which they are located existing within the legal boundaries on April 14, 2022.
(4) Data layers defining map units were created on a base of U.S. Geological Survey digital ortho-photo quarter-quadrangles, and critical habitat units were then mapped using Universal Transverse Mercator (UTM) Zone 15N coordinates. ESRI's ArcGIS 10.0 software was used to determine latitude and longitude coordinates using decimal degrees. The USA Topo ESRI online basemap service was referenced to identify features (like roads and streams) used to delineate the upstream and downstream extents of critical habitat units. The maps in this entry, as modified by any accompanying regulatory text, establish the boundaries of the critical habitat designation. The coordinates or plot points or both on which each map is based are available to the public at the Service's internet site at https://www.fws.gov/westvirginiafieldoffice/, at https://www.regulations.gov at Docket No. FWS-R5-ES-2019-0098, and at the North Atlantic-Appalachian Regional Office. You may obtain field office location information by contacting one of the Service regional offices, the addresses of which are listed at 50 CFR 2.2 .
(5) Index map of critical habitat for the Guyandotte River crayfish follows:

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(6) Unit 1: Upper Guyandotte-Logan and Wyoming Counties, West Virginia.
(i) Subunit 1a: Pinnacle Creek, Wyoming County, West Virginia.
(A) Subunit 1a consists of approximately 28.6 skm (17.8 smi) of Pinnacle Creek from its confluence with Beartown Fork downstream to its confluence with the Guyandotte River at Pineville, West Virginia.
(B) Map of Subunit 1a follows:

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(ii) Subunit 1b: Clear Fork and Laurel Fork, Wyoming County, West Virginia.
(A) Subunit 1b consists of approximately 38.0 skm (23.6 smi) of Clear Fork and its primary tributary Laurel Fork from the confluence of Laurel Creek and Acord Branch downstream to the confluence of Clear Fork and the Guyandotte River.
(B) Map of Subunit 1b follows:

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(iii) Subunit 1c: Guyandotte River, Wyoming County, West Virginia.
(A) Subunit 1c consists of approximately 35.8 skm (22.2 smi) of the Guyandotte River from its confluence with Pinnacle Creek at Pineville, West Virginia, downstream to its confluence with Clear Fork.
(B) Map of Subunit 1c follows:

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(iv) Subunit 1d: Indian Creek, Wyoming County, West Virginia.
(A) Subunit 1d consists of approximately 4.2 skm (2.6 smi) of Indian Creek from the confluence of Indian Creek and Brier Creek at Fanrock, West Virginia, to the confluence of Indian Creek and the Guyandotte River.
(B) Map of Subunit 1d follows:

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(v) Subunit 1e: Huff Creek, Wyoming and Logan Counties, West Virginia.
(A) Subunit 1e consists of approximately 28.0 skm (17.4 smi) of Huff Creek from its confluence with Straight Fork downstream to its confluence with the Guyandotte River at Huff, West Virginia.
(B) Map of Subunit 1e follows:

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Panama City Crayfish (Procambarus econfinae)

(1) Critical habitat units are depicted for Bay County, Florida, on the maps in this entry.
(2) Within these areas, the physical or biological features essential to the conservation of Panama City crayfish consist of the following components:
(i) Undeveloped lands, including cropland, utilities rights-of-way, timberlands, and grazing lands, that support open wet pine flatwoods and wet prairie habitats that contain the following:
(A) Appropriate herbaceous ground cover vegetation;
(B) Permanent or temporary pools of shallow (usually less than 1 foot) freshwater locations; and
(C) Gently sloped ground-level swales with a 3:1 or shallower slope ratio along ecotonal or transitional areas.
(ii) Soil types within undeveloped lands that provide sediment structure needed for burrow construction and that support mostly native herbaceous vegetation needed for additional food and shelter, and where the ground water is always within 3 feet of the ground surface and surface waters occur on occasion. These soil types include:
(A) Core soils for Panama City crayfish, including Pamlico-Dorovan Complex, Rutlege Sand, Plummer Sand, Pelham Sand, Pantego Sandy Loam, and Rutledge-Pamlico Complex;
(B) Secondary soils within 50 feet (15 meters) of core soils: Albany Sand, Leefield Sand, Leon Fine Sand, Osier Fine Sand, and Alapaha Loamy Sand; and
(C) Soils that currently, or can eventually, support native herbaceous vegetation such as, but not limited to, wiregrass (Aristida beyrichiana), redroot (Lachnanthes caroliniana), beakrushes (Rhynchospora spp.), pitcher plants (Sarracenia spp.), sundews (Drosera spp.), butterworts (Pinguicula spp.), and lilies (Hymenocallis spp.).
(iii) Undeveloped lands that contain surface and groundwater of sufficient quality to support all life stages of the Panama City crayfish and the herbaceous vegetation on which they rely, specifically surface waters with:
(A) Oxygen levels that range between 2 and 9 milligrams per liter;
(B) pH levels between 4.1 and 9.2; and
(C) Temperatures between 42 and 94 degrees Fahrenheit ( °F) (5 and 34.4 degrees Celsius ( °C)), although optimum temperatures are thought to be in the range of 68 to 79 °F (20 to 26 °C).
(3) Critical habitat does not include manmade structures (such as buildings, aqueducts, runways, roads, and other paved areas) and the land on which they are located existing within the legal boundaries on February 4, 2022.
(4) Data layers defining map units were created based on known occurrences and habitat requirements. Critical habitat units were mapped in ArcMap (ESRI, Inc.) using the U.S. Department of Agriculture, Natural Resources Conservation Service, Soil Survey Geographic Database dataset. The maps in this entry, as modified by any accompanying regulatory text, establish the boundaries of the critical habitat designation. The coordinates or plot points or both on which each map is based are available to the public at https://www.regulations.gov at Docket No. FWS-R4-ES-2020-0137 and at the field office responsible for this designation. You may obtain field office location information by contacting one of the Service regional offices, the addresses of which are listed at 50 CFR 2.2 .
(5) Note: Index map follows:

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(6) Unit 1: 19th Street, Bay County, Florida.
(i) Unit 1 consists of 23.2 acres (9.4 ha) and is composed of lands in State, county, or city ownership (3.7 ac (1.5 ha)), and private ownership (19.5 ac (7.9 ha)).
(ii) Map of Units 1, 2, 3, and 4 follows:

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(7) Unit 2: Talkington, Bay County, Florida.
(i) Unit 2 consists of 37.2 acres (15.1 ha) and is composed of lands in State, county, or city ownership (4.09 ac (1.7 ha)), and private ownership (33.08 ac (13.4 ha)).
(ii) Map of Unit 2 is provided at paragraph (6)(ii) of this entry.
(8) Unit 3: Minnesota, Bay County, Florida.
(i) Unit 3 consists of 49.0 acres (19.8 ha) and is composed of lands in State, county, or city ownership (30.0 ac (12.1 ha)), and private ownership (19.1 ac (7.7 ha)).
(ii) Map of Unit 3 is provided at paragraph (6)(ii) of this entry.
(9) Unit 4: Transmitter West, Bay County, Florida.
(i) Unit 4 consists of 181.8 acres (73.6 ha) and is composed of lands in State, county, or city ownership (2.2 ac (0.9 ha)), and private ownership (179.6 ac (72.7 ha)).
(ii) Map of Unit 4 is provided at paragraph (6)(ii) of this entry.
(10) Unit 5: Deer Point, Bay County, Florida.
(i) Unit 5 consists of 278.8 ac (112.8 ha) and is composed of lands in State, county, or city ownership (4.5 ac (1.8 ha)), and private ownership (274.3 ac (111.0 ha)).
(ii) Map of Units 5 and 6 follows:

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(11) Unit 6: High Point, Bay County, Florida.
(i) Unit 6 consists of 36.8 ac (14.9 ha) and is composed of lands in State, county, or city ownership (0.5 ac (0.2 ha)), and private ownership (36.3 ac (14.7 ha)).
(ii) Map of Unit 6 is provided at paragraph (10)(ii) of this entry.
(12) Unit 7: Star, Bay County, Florida.
(i) Unit 7 consists of 1,424.3 ac (576.4 ha) and is composed of lands in State, county, or city ownership (6.5 ac (2.6 ha)), and private ownership (1,417.8 ac (573.8 ha)).
(ii) Map of Units 7 and 8 follows:

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(13) Unit 8: Transmitter East, Bay County, Florida.
(i) Unit 8 consists of 2,107.4 ac (852.8 ha) and is composed of lands in State, county, or city ownership (49.9 ac (20.2 ha)), and private ownership (2,057.5 ac (832.6 ha)).
(ii) Map of Unit 8 is provided at paragraph (12)(ii) of this entry.

Slenderclaw Crayfish (Cambarus cracens)

(1) Critical habitat units are depicted for DeKalb and Marshall Counties, Alabama, on the maps in this entry.
(2) Within these areas, the physical or biological features essential to the conservation of the slenderclaw crayfish consist of the following components:
(i) Geomorphically stable, small to medium, flowing streams:
(A) That are typically 19.8 feet (ft) (6 meters (m)) wide or smaller;
(B) With attributes ranging from:
(1) Streams with predominantly large boulders and fractured bedrock, with widths from 16.4 to 19.7 ft (5 to 6 m), low to no turbidity, and depths up to 2.3 ft (0.7 m); to
(2) Streams dominated by small substrate types with a mix of cobble, gravel, and sand, with widths of approximately 9.8 feet (3 m), low to no turbidity, and depths up to 0.5 feet (0.15 m);
(C) With substrate consisting of boulder and cobble containing abundant interstitial spaces for sheltering and breeding; and
(D) With intact riparian cover to maintain stream morphology and to reduce erosion and sediment inputs.
(ii) Seasonal water flows, or a hydrologic flow regime (which includes the severity, frequency, duration, and seasonality of discharge over time), necessary to maintain benthic habitats where the species is found and to maintain connectivity of streams with the floodplain, allowing the exchange of nutrients and sediment for maintenance of the crayfish's habitat and food availability.
(iii) Appropriate water and sediment quality (including, but not limited to, conductivity; hardness; turbidity; temperature; pH; and minimal levels of ammonia, heavy metals, pesticides, animal waste products, and nitrogen, phosphorus, and potassium fertilizers) necessary to sustain natural physiological processes for normal behavior, growth, and viability of all life stages.
(iv) Prey base of aquatic macroinvertebrates and detritus. Prey items may include, but are not limited to, insect larvae, snails and their eggs, fish and their eggs, and plant and animal detritus.
(3) Critical habitat does not include manmade structures (such as buildings, aqueducts, runways, roads, and other paved areas) and the land on which they are located existing within the legal boundaries on October 8, 2021.
(4) Data layers defining map units were created using Universal Transverse Mercator (UTM) Zone 16N coordinates and species' occurrence data. The hydrologic data used in the maps were extracted from U.S. Geological Survey National Hydrography Dataset High Resolution (1:24,000 scale) using Geographic Coordinate System North American 1983 coordinates. The maps in this entry, as modified by any accompanying regulatory text, establish the boundaries of the critical habitat designation. The coordinates or plot points or both on which each map is based are available to the public at http://www.regulations.gov under Docket No. FWS-R4-ES-2018-0069 and at the field office responsible for this designation. You may obtain field office location information by contacting one of the Service regional offices, the addresses of which are listed at 50 CFR 2.2 .
(5) Note: Index map follows:

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(6) Unit 1: Town Creek, DeKalb County, Alabama.
(i) This unit consists of 41.8 river miles (67.2 river kilometers) of occupied habitat in Bengis and Town Creeks. Unit 1 includes stream habitat up to bank full height consisting of the headwaters of Bengis Creek to its confluence with Town Creek and upstream to the headwaters of Town Creek.
(ii) Map of Unit 1 follows:

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(7) Unit 2: Short Creek, DeKalb and Marshall Counties, Alabama.
(i) Subunit 2a: Shoal Creek and Short Creek, DeKalb and Marshall Counties, Alabama.
(A) This subunit consists of 10.3 river miles (16.6 river kilometers) of occupied habitat in Scarham, Shoal, Short, and Whippoorwill Creeks. Subunit 2a includes stream habitat up to bank full height consisting of the headwaters of Shoal Creek to its confluence with Whippoorwill Creek, Whippoorwill Creek to its confluence with Scarham Creek, Scarham Creek to its confluence with Short Creek, and Short Creek to its downstream extent to the Guntersville Lake Tennessee Valley Authority project boundary.
(B) Map of Subunit 2a follows:

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(ii) Subunit 2b: Scarham-Laurel Creek, DeKalb and Marshall Counties, Alabama.
(A) This subunit consists of 25.9 river miles (41.7 river kilometers) of unoccupied habitat in Scarham-Laurel Creek. Subunit 2b includes stream habitat up to bank full height consisting of the headwaters of Scarham-Laurel Creek to its confluence with Whippoorwill Creek. This subunit is a small to medium, flowing stream with substrate consisting of boulder and cobble containing interstitial spaces for sheltering and breeding and connected to the occupied subunit 2a.
(B) Map of Subunit 2b follows:

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St. Francis River Crayfish (Faxonius quadruncus)

(1) The critical habitat unit is depicted for Iron, Madison, St. Francois, Washington, and Wayne Counties in Missouri, on the map in this entry.
(2) Within the critical habitat unit, the physical or biological features essential to the conservation of the St. Francis River crayfish consist of the following components:
(i) Stream flow velocity generally between 0 and 1.1 feet per second (ft/s) (0 and 0.35 meters per second (m/s)).
(ii) Stream depths generally between 0.2 and 1.7 feet (0.06 and 0.52 meters).
(iii) Water temperatures between 34 and 84 °F (1.1 and 28.9 °C).
(iv) Adequately low stream embeddedness so that spaces under rocks and cavities in gravel remain available to the St. Francis River crayfish.
(v) An available forage and prey base consisting of invertebrates, periphyton, and plant detritus.
(vi) Connectivity among occupied stream reaches of the St. Francis River crayfish (both within and among occupied subwatersheds).
(vii) Adequately low ratios or densities of nonnative species that allow for maintaining populations of the St. Francis River crayfish.
(3) Critical habitat does not include manmade structures (such as buildings, aqueducts, runways, roads, and other paved areas) and the land on which they are located existing within the legal boundaries on May 30, 2023.
(4) The National Hydrography Dataset Plus (NHDPlus) was the geospatial data used to delineate critical habitat. NHDPlus is a national geospatial surface water framework that integrates the National Hydrography Dataset with the National Elevation Dataset and the Watershed Boundary Dataset. NHDPlus uses medium resolution (1:100,000-scale) data with a geographic projection and NAD83 Datum. Critical habitat was delineated by including all streams within subwatersheds (at the 12-digit hydrologic unit level) occupied by the St. Francis River crayfish. Occupied watersheds were defined using data from the Missouri Department of Conservation; the entire St. Francis River upstream of 36.982104N, 90.335400W is also considered occupied as a migratory route. The map in this entry, as modified by any accompanying regulatory text, establishes the boundaries of the critical habitat designation. The coordinates or plot points or both on which the map is based are available to the public at https://www.regulations.gov under Docket No. FWS-R3-ES-2019-0020 and at the Missouri Ecological Services Field Office. You may obtain field office location information by contacting one of the Service regional offices, the addresses of which are listed at 50 CFR 2.2 .
(5) St. Francis River Crayfish Unit-Iron, Madison, St. Francois, Washington, and Wayne Counties, Missouri.
(i) The unit consists of all of the streams (approximately 1,043 river miles (1,679 kilometers)) upstream of Wappapello Dam in the following subwatersheds (numbers in parentheses represent the 12-digit hydrologic codes): Blankshire Branch-St. Francis River (80202020204), Captain Creek-St. Francis River (80202020405), Cedar Bottom Creek-St. Francis River (80202020402), Headwaters St. Francis River (80202020201), Headwaters Stouts Creek (80202020207), Hubble Creek-St. Francis River (80202020502), Leatherwood Creek-St. Francis River (80202020406), Little St. Francis River (80202020103), Lost Creek (80202020507), Marble Creek (80202020401), Musco Creek-Little St. Francis River (80202020101), O'Bannon Creek-St. Francis River (80202020206), Saline Creek-Little St. Francis River (80202020102), Stouts Creek (80202020208), Turkey Creek-St. Francis River (80202020210), and Wachita Creek-St. Francis River (80202020209). The unit also consists of the entire St. Francis River upstream of 36.982104N, 90.335400W. The unit does not include any areas of adjacent land. The Upper St. Francis River Watershed Unit includes stream habitat up to bank full height.
(ii) Map of St. Francis River Crayfish Unit of St. Francis River crayfish critical habitat follows:

Figure 1 for St. Francis River Crayfish (Faxonius quadruncus) paragraph (5)(ii)

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Conservancy Fairy Shrimp (Branchinecta conservatio).

(1) Critical habitat units are depicted for Butte, Colusa, Mariposa, Merced, Solano, Stanislaus, Tehama, and Ventura Counties, California, on the maps below.
(2) The primary constituent elements of critical habitat for Conservancy fairy shrimp (Branchinecta conservatio) are the habitat components that provide:
(i) Topographic features characterized by mounds and swales and depressions within a matrix of surrounding uplands that result in complexes of continuously, or intermittently, flowing surface water in the swales connecting the pools described below in paragraph (2)(ii), providing for dispersal and promoting hydroperiods of adequate length in the pools;
(ii) Depressional features including isolated vernal pools with underlying restrictive soil layers that become inundated during winter rains and that continuously hold water for a minimum of 19 days, in all but the driest years; thereby providing adequate water for incubation, maturation, and reproduction. As these features are inundated on a seasonal basis, they do not promote the development of obligate wetland vegetation habitats typical of permanently flooded emergent wetlands;
(iii) Sources of food, expected to be detritus occurring in the pools, contributed by overland flow from the pools' watershed, or the results of biological processes within the pools themselves, such as single-celled bacteria, algae, and dead organic matter, to provide for feeding; and
(iv) Structure within the pools described above in paragraph (2)(ii), consisting of organic and inorganic materials, such as living and dead plants from plant species adapted to seasonally inundated environments, rocks, and other inorganic debris that may be washed, blown, or otherwise transported into the pools, that provide shelter.
(3) Existing manmade features and structures, such as buildings, roads, railroads, airports, runways, other paved areas, lawns, and other urban landscaped areas do not contain one or more of the primary constituent elements. Federal actions limited to those areas, therefore, would not trigger a consultation under section 7 of the Act unless they may affect the species and/or primary constituent elements in adjacent critical habitat.
(4) Unit 1 Tehama County, California.
(i) [Reserved]
(ii) Unit 1 (Map 1) follows:

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(5) Unit 3: Solano County, California. From USGS 1:24,000 topographic quadrangles Elmira, and Denverton.
(6) Unit 3 (Map 2) follows:

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(7) Unit 5: Stanislaus County, California. From USGS 1:24,000 topographic quadrangle Ripon.
(8) Unit 5 (Map 3) follows:

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(9) Unit 6: Merced County, and Mariposa County, California.
(10) Unit 6 (Map 4) follows:

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(11) Unit 7: Merced County, California.
(i) [Reserved]
(ii) Unit 7 (Map 5) follows:

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(12) Unit 8: Ventura County, California.
(13) Unit 8 (Map 6) follows:

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Longhorn Fairy Shrimp (Branchinecta longiantenna)

(1) Critical habitat units are depicted for Alameda, Contra Costa, Merced, and San Luis Obispo Counties, California, on the map below.
(2) The primary constituent elements of critical habitat for longhorn fairy shrimp (Branchinecta longiantenna) are the habitat components that provide:
(i) Topographic features characterized by mounds and swales and depressions within a matrix of surrounding uplands that result in complexes of continuously, or intermittently, flowing surface water in the swales connecting the pools described below in paragraph (2)(ii), providing for dispersal and promoting hydroperiods of adequate length in the pools;
(ii) Depressional features including isolated vernal pools with underlying restrictive soil layers that become inundated during winter rains and that continuously hold water for a minimum of 23 days, in all but the driest years; thereby providing adequate water for incubation, maturation, and reproduction. As these features are inundated on a seasonal basis, they do not promote the development of obligate wetland vegetation habitats typical of permanently flooded emergent wetlands;
(iii) Sources of food, expected to be detritus occurring in the pools, contributed by overland flow from the pools' watershed, or the results of biological processes within the pools themselves, such as single-celled bacteria, algae, and dead organic matter, to provide for feeding; and
(iv) Structure within the pools described above in paragraph (2)(ii), consisting of organic and inorganic materials, such as living and dead plants from plant species adapted to seasonally inundated environments, rocks, and other inorganic debris that may be washed, blown, or otherwise transported into the pools, that provide shelter.
(3) Existing manmade features and structures, such as buildings, roads, railroads, airports, runways, other paved areas, lawns, and other urban landscaped areas do not contain one or more of the primary constituent elements. Federal actions limited to those areas, therefore, would not trigger a consultation under section 7 of the Act unless they may affect the species and/or primary constituent elements in adjacent critical habitat.
(4) Unit 1: Contra Costa County.
(i) [Reserved]
(ii) Unit 1 (Map 1) follows:

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(5) Unit 2: Merced County.
(6) Unit 2 (Map 2) follows:

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(7) Unit 3: San Luis Obispo County.
(8) Unit 3 (Map 3) follows:

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Riverside Fairy Shrimp (Streptocephalus woottoni)

(1) Unit descriptions are depicted for Ventura, Orange, and San Diego Counties, California, on the maps below.
(2) Within these areas, the primary constituent elements of the physical or biological features essential to the conservation of the Riverside fairy shrimp consist of three components:
(i) Ephemeral wetland habitat consisting of vernal pools and ephemeral habitat that have wet and dry periods appropriate for the incubation, maturation, and reproduction of the Riverside fairy shrimp in all but the driest of years, such that the pools:
(A) Are inundated (pond) approximately 2 to 8 months during winter and spring, typically filled by rain, surface, and subsurface flow;
(B) Generally dry down in the late spring to summer months;
(C) May not pond every year; and
(D) Provide the suitable water chemistry characteristics to support the Riverside fairy shrimp. These characteristics include physiochemical factors such as alkalinity, pH, temperature, dissolved solutes, dissolved oxygen, which can vary depending on the amount of recent precipitation, evaporation, or oxygen saturation; time of day; season; and type and depth of soil and subsurface layers. Vernal pool habitat typically exhibits a range of conditions but remains within the physiological tolerance of the species. The general ranges of conditions include, but are not limited to:
(1) Dilute, freshwater pools with low levels of total dissolved solids (low ion levels (sodium ion concentrations generally below 70 millimoles per liter));
(2) Low alkalinity levels (lower than 80 to 1,000 milligrams per liter (mg/l)); and
(3) A range of pH levels from slightly acidic to neutral (typically in range of 6.4-7.1).
(ii) Intermixed wetland and upland habitats that function as the local watershed, including topographic features characterized by mounds, swales, and low-lying depressions within a matrix of upland habitat that result in intermittently flowing surface and subsurface water in swales, drainages, and pools described in paragraph (h)(2)(i) of this entry. Associated watersheds provide water to fill the vernal or ephemeral pools in the winter and spring months. Associated watersheds vary in size and therefore cannot be generalized, and they are affected by factors including surface and underground hydrology, the topography of the area surrounding the pool or pools, the vegetative coverage, and the soil substrates in the area. The size of associated watersheds likely varies from a few acres to greater than 100 ac (40 ha).
(iii) Soils that support ponding during winter and spring which are found in areas characterized in paragraphs (h)(2)(i) and (h)(2)(ii), respectively, of this entry, that have a clay component or other property that creates an impermeable surface or subsurface layer. Soil series with a clay component or an impermeable surface or subsurface layer typically slow percolation, increase water run-off (at least initially), and contribute to the filling and persistence of ponding of ephemeral wetland habitat where the Riverside fairy shrimp occurs. Soils and soil series known to support vernal pool habitat include, but are not limited to:
(A) The Azule, Calleguas, Cropley, and Linne soils series in Ventura County;
(B) The Alo, Balcom, Bosanko, Calleguas, Cieneba, and Myford soils series in Orange County;
(C) The Cajalco, Claypit, Murrieta, Porterville, Ramona, Traver, and Willows soils series in Riverside County; and
(D) The Diablo, Huerhuero, Linne, Placentia, Olivenhain, Redding, Salinas, and Stockpen soils series in San Diego County.
(3) Critical habitat does not include manmade structures (such as buildings, aqueducts, runways, roads, and other paved areas) and the land on which they are located existing within the legal boundaries on January 3, 2013.
(4)Critical habitat map units. Data layers defining map units were created using a base of U.S. Geological Survey 7.5' quadrangle maps. Unit descriptions were then mapped using Universal Transverse Mercator (UTM) zone 11, North American Datum (NAD) 1983 coordinates. The maps in this entry, as modified by any accompanying regulatory text, establish the boundaries of the critical habitat designation. The coordinates or plot points or both on which each map is based are available to the public on http://regulations.gov at Docket No. FWS-R8-ES-2011-0013, on our Internet site (http://www.fws.gov/carlsbad/), and at the Carlsbad Fish and Wildlife Office, 6010 Hidden Valley Road, Suite 101, Carlsbad, CA 92011.
(5)Note: Index map follows:

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(6) Unit 1: Ventura County, California. Map of Subunit 1a, Tierra Rejada Preserve, and Subunit 1b, South of Tierra Rejada Valley, follows:

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(7) Unit 2: Los Angeles Basin-Orange County Foothills, Orange County, California.
(i) Map of Subunit 2dA, Saddleback Meadows, and Subunit 2dB, O'Neill Regional Park (near Trabuco Canyon), follows:

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(ii) Map of Subunit 2e, O'Neill Regional Park (near Canada Gobernadora), follows:

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(iii) Map of Subunit 2h, San Onofre State Beach, State Park-leased land (near Christianitos Creek foothills) (near Camp Pendleton), follows:

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(8) Unit 5: San Diego Southern Coastal Mesas, San Diego County, California.
(i) Map of Subunit 5a, Sweetwater (J33); Subunit 5e, J2 N, J4, J5 (Robinhood Ridge); Subunit 5f, J2 W and J2 S (Hidden Trails, Cal Terraces, Otay Mesa Road); Subunit 5g, J14; and Subunit 5h, J11 E and J11 W, J12, J16-18 (Goat Mesa), follows:

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(ii) Map of Subunit 5c, East Otay Mesa, follows:

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(iii) Map of Subunit 5d, J29-31, follows:

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San Diego Fairy Shrimp (Branchinecta sandiegonensis)

(1) Critical habitat units are depicted for Orange and San Diego counties, California, on the maps below.
(2) The primary constituent elements of critical habitat for the San Diego fairy shrimp are:
(i) Vernal pools with shallow to moderate depths (2 in (5 cm) to 12 in (30 cm)) that hold water for sufficient lengths of time (7 to 60 days) necessary for incubation, maturation, and reproduction of the San Diego fairy shrimp, in all but the driest years;
(ii) Topographic features characterized by mounds and swales and depressions within a matrix of surrounding uplands that result in complexes of continuously, or intermittently, flowing surface water in the swales connecting the pools described in paragraph (2)(i) of this entry, providing for dispersal and promoting hydroperiods of adequate length in the pools (i.e., the vernal pool watershed); and
(iii) Flat to gently sloping topography, and any soil type with a clay component and/or an impermeable surface or subsurface layer known to support vernal pool habitat (including Carlsbad, Chesterton, Diablo, Huerhuero, Linne, Olivenhain, Placentia, Redding, and Stockpen soils).
(3) Critical habitat does not include manmade structures (such as buildings, aqueducts, runways, roads, and other paved areas) and the land on which they are located existing within the legal boundaries on the effective date of this rule.
(4) Critical habitat map units. Data layers defining map units were created using a base of U.S. Geological Survey 7.5' quadrangle maps, and the critical habitat units were then mapped using UTM coordinates.
(5) NOTE: Index map (Map 1) follows:

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(6) Unit 1: Orange County, California. From USGS 1:24, 000 quadrangle map Newport Beach.
(i) [Reserved]
(ii) Map of Unit 1, Subunit 1C (Map 2) follows:

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(7) Unit 2: San Diego County, California. From USGS 1:24, 000 quadrangle map Encinitas.
(i) [Reserved]
(ii) Map of Unit 2, Subunit 2G (Map 3) follows:

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(8) Unit 3: San Diego County, California.
(i) Map of Unit 3, Subunits 3A, 3C, and 3D (Map 4) follows:

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(ii) Map of Unit 3, Subunits 3E.1, 3E.2, 3E.3, and 3E.4 (Map 5) follows:

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(9)Unit 4: San Diego County, California.
(i) Map of Unit 4, Subunits 4A/B, 4G, 4H, 4I, and 4J (Map 6) follows:

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(ii) Map of Unit 4, Subunits 4C, 4K, 4L and 4M (Map 7) follows:

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(iii) Map of Unit 4, Subunit 4D (Map 8) follows:

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(iv) Map of Unit 4, Subunits 4E and 4F (Map 9) follows:

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(10) Unit 5: San Diego County, California.
(i) Map of Unit 5, Subunits 5A, 5B, 5C, 5D, and 5H (Map 10) follows:

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(ii) Map of Unit 5, Subunits 5F and 5G (Map 11) follows:

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(iii) Map of Unit 5, Subunit 5I (Map 12) follows:

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Vernal Pool Fairy Shrimp (Branchinecta lynchi)

(1) Critical habitat units are depicted for Jackson County, Oregon, and Alameda, Amador, Butte, Contra Costa, Fresno, Kings, Madera, Mariposa, Merced, Monterey, Napa, Placer, Sacramento, San Benito, San Joaquin, San Luis Obispo, Santa Barbara, Shasta, Solano, Stanislaus, Tehama, Tulare, Ventura, and Yuba Counties, California on the map below:
(2) The primary constituent elements of critical habitat for vernal pool fairy shrimp (Branchinecta lynchi) are the habitat components that provide:
(i) Topographic features characterized by mounds and swales and depressions within a matrix of surrounding uplands that result in complexes of continuously, or intermittently, flowing surface water in the swales connecting the pools described below in paragraph (2)(ii), providing for dispersal and promoting hydroperiods of adequate length in the pools;
(ii) Depressional features including isolated vernal pools with underlying restrictive soil layers that become inundated during winter rains and that continuously hold water for a minimum of 18 days, in all but the driest years; thereby providing adequate water for incubation, maturation, and reproduction. As these features are inundated on a seasonal basis, they do not promote the development of obligate wetland vegetation habitats typical of permanently flooded emergent wetlands;
(iii) Sources of food, expected to be detritus occurring in the pools, contributed by overland flow from the pools' watershed, or the results of biological processes within the pools themselves, such as single-celled bacteria, algae, and dead organic matter, to provide for feeding; and
(iv) Structure within the pools described above in paragraph (3)(ii), consisting of organic and inorganic materials, such as living and dead plants from plant species adapted to seasonally inundated environments, rocks, and other inorganic debris that may be washed, blown, or otherwise transported into the pools, that provide shelter.
(3) Existing manmade features and structures, such as buildings, roads, railroads, airports, runways, other paved areas, lawns, and other urban landscaped areas do not contain one or more of the primary constituent elements. Federal actions limited to those areas, therefore, would not trigger a consultation under section 7 of the Act unless they may affect the species and/or primary constituent elements in adjacent critical habitat.
(4) Unit 1: Jackson County, Oregon. Map of Unit 1 is provided at paragraph (7)(ii) of this entry.
(5) Unit 2: Jackson County, Oregon. Map of Unit 2 is provided at paragraph (7)(ii) of this entry.
(6) Unit 3: Jackson County, Oregon. Map of Unit 3 is provided at paragraph (7)(ii) of this entry.
(7) Unit 4: Jackson County, Oregon
(i) [Reserved]
(ii) Units 1-4 (Map 1) follow:

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(8) Unit 5: Shasta County, California. Map of Unit 5 is provided at paragraph (13) of this entry.
(9) Unit 6: Tehama County, California. Map of Unit 6 is provided at paragraph (13) of this entry.
(10) Unit 7: Tehama County, California. Map of Unit 7 is provided at paragraph (13) of this entry.
(11) Unit 8: Tehama and Glenn Counties, California. Map of Unit 8 is provided at paragraph (13) of this entry.
(12) Unit 9: Butte County, California. Map of Unit 9 is provided at paragraph (13) of this entry.
(13) Units 5-9 (Map 2) follow:

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(14) Unit 10: Glenn and Colusa Counties, California. This unit was excluded from the designation pursuant to Section 4(b)(2) of the Act.
(15) Unit 11: Yuba County, California. Map of Unit 11 is provided at paragraph (16)(ii) of this entry.
(16) Unit 12: Placer County, California.
(i) [Reserved]
(ii) Units 11-12 (Map 3) follow:

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(17) Unit 13: Sacramento County, California. Map of Unit 13 is provided at paragraph (18)(ii) of this entry.
(18) Unit 14: Sacramento and Amador County, California.
(i) [Reserved]
(ii) Units 13-14 (Map 4) follow:

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(19) Unit 16: Solano County, California. Map of Unit 16 is provided at paragraph (21) of this entry.
(20) Unit 17: Napa County, California. Map of Unit 17 is provided at paragraph (21) of this entry.
(21) Units 16-17 (Map 5) follow:

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(22) Unit 18: San Joaquin County, California. Map of Unit 18 is provided at paragraph (25) of this entry.
(23) Unit 19: Contra Costa County, California. Map of Unit 19 is provided at paragraph (25) of this entry.
(24) Unit 20: Stanislaus County, California. Map of Unit 20 is provided at paragraph (25) of this entry.
(25) Maps of Units 18, 19, and 20 (Maps 6 and 7) follow:

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(26) Unit 21: Stanislaus County, California. Map of Unit 21 is provided at paragraph (28) of this entry.
(27) Unit 22: Merced County, California. Map of Unit 22 is provided at paragraph (28) of this entry.
(28) Units 21-22 (Map 8) follow:

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(29) Unit 23: Merced County, California
(i) [Reserved]
(ii) Unit 23 (Map 9) follows:

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(30) Unit 24: Madera County, California. Map of Unit 24 is provided at paragraph (32) of this entry.
(31) Unit 25: Madera County, California. Map of Unit 25 is provided at paragraph (32) of this entry.
(32) Units 24-25 (Map 10) follow:

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(33) Unit 26: Tulare and Kings Counties, California.
(i) [Reserved]
(ii) Unit 26 (Map 11) follows:

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(34) Unit 27: Tulare County, California.
(i) [Reserved]
(ii) Unit 27 (Map 12) follows:

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(35) Unit 28: San Benito and Monterey Counties, California. Map of Unit 28 is provided at paragraph (36) of this entry.
(36) Unit 28 (Map 13) follows:

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(37) Unit 29: Monterey County, California.
(i) [Reserved]
(ii) Unit 29 (Map 14) follows:

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(38) Unit 30: San Luis Obispo County, California. Map of Unit 30 is provided at paragraph (39) of this entry.
(39) Unit 30 (Map 15) follows:

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(40) Unit 31: Santa Barbara County, California. Map of Unit 31 is provided at paragraph (41) of this entry.
(41) Unit 31 (Map 16) follows:

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(42) Unit 32: Ventura County, California. Map of Unit 32 is provided at paragraph (43) of this entry.
(43) Unit 32 (Map 17) follows:

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Kentucky Cave Shrimp (Palaemonias ganteri)

Kentucky, Edmonson County: The Roaring River passage of the Flint-Mammoth Cave System in Mammoth Cave National Park.

Note: The map provided is for informational purposes only. Map follows:

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Known constituent elements include a stream in a base level cave passage with abundant organic material and sediments consisting of coarse silt and very coarse to very fine sand.

Vernal Pool Tadpole Shrimp (Lepidurus packardi)

(1) Critical habitat units are depicted for Alameda, Amador, Butte, Colusa, Fresno, Kings, Madera, Mariposa, Merced, Sacramento, Shasta, Solano, Stanislaus, Tehama, Tulare, Yolo, and Yuba counties, California, on the map below.
(2) The primary constituent elements of critical habitat for vernal pool tadpole shrimp (Lepidurus packardi) are the habitat components that provide:
(i) Topographic features characterized by mounds and swales and depressions within a matrix of surrounding uplands that result in complexes of continuously, or intermittently, flowing surface water in the swales connecting the pools described below in paragraph (2)(ii), providing for dispersal and promoting hydroperiods of adequate length in the pools;
(ii) Depressional features including isolated vernal pools with underlying restrictive soil layers that become inundated during winter rains and that continuously hold water for a minimum of 41 days, in all but the driest years; thereby providing adequate water for incubation, maturation, and reproduction. As these features are inundated on a seasonal basis, they do not promote the development of obligate wetland vegetation habitats typical of permanently flooded emergent wetlands;
(iii) Sources of food, expected to be detritus occurring in the pools, contributed by overland flow from the pools' watershed, or the results of biological processes within the pools themselves, such as single-celled bacteria, algae, and dead organic matter, to provide for feeding; and
(iv) Structure within the pools described above in paragraph (2)(ii), consisting of organic and inorganic materials, such as living and dead plants from plant species adapted to seasonally inundated environments, rocks, and other inorganic debris that may be washed, blown, or otherwise transported into the pools, that provide shelter.
(3) Existing manmade features and structures, such as buildings, roads, railroads, airports, runways, other paved areas, lawns, and other urban landscaped areas do not contain one or more of the primary constituent elements. Federal actions limited to those areas, therefore, would not trigger a consultation under section 7 of the Act unless they may affect the species and/or primary constituent elements in adjacent critical habitat.
(4) Unit 1: Shasta County, California. Map of Unit 1 is provided at paragraph (5)(ii) of this entry.
(5) Unit 2: Shasta County, California.
(i) [Reserved]
(ii) Units 1 and 2 (Map 1) follow:

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(6) Unit 3: Tehama County, California.
(i) [Reserved]
(ii) Unit 3 (Map 2) follows:

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(7) Unit 4: Butte County, California.
(i) [Reserved]
(ii) Unit 4 (Map 3) follows:

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(8) Unit 6: Colusa County, California. Map of Unit 6 is provided at paragraph (10) of this entry.
(9) Unit 7: Yuba County, California. Map of Unit 7 is provided at paragraph (10) of this entry.
(10) Units 6 and 7 (Map 4) follow:

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(11) Unit 8: Sacramento County, California. Map of Unit 8 is provided at paragraph (12)(ii) of this entry.
(12) Unit 9: Sacramento County, California.
(i) [Reserved]
(ii) Units 8 and 9 (Map 5) follow:

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(13) Unit 10: Yolo County, California. Map of Unit 10 is provided at paragraph (14)(ii) of this entry.
(14) Unit 11: Solano County, California
(i) [Reserved]
(ii) Units 10 and 11 (Map 6) follow:

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(15) Unit 13: Stanislaus County, California.
(i) [Reserved]
(ii) Unit 13 (Map 7) follows:

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(16) Unit 14: Alameda County, California.
(i) [Reserved]
(ii) Unit 14 (Map 8) follows:

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(17) Unit 15: Merced, Madera, and Mariposa Counties, California. Unit 15 excludes land bounded by the following UTM Zone 10, NAD 83 coordinates (E,N): 757175, 4117475; 757117, 4117435; 757138, 4117438; 757146, 4117439; 757245, 4117516; 757255, 4117530; returning to 757175, 4117475. Map of Unit 15 is provided at paragraph (18) of this entry.
(18) Unit 15 (Map 9) follows:

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(19) Unit 16: Merced County, California.
(i) [Reserved]
(ii) Unit 16 (Map 10) follows:

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(20) Unit 17: Fresno County, California. Map of Unit 17 is provided at paragraph (21) of this entry.
(21) Unit 17 (Map 11) follows:

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(22) Unit 18: Tulare and Kings Counties, California.
(i) [Reserved]
(ii) Unit 18 (Map 12) follows:

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50 C.F.R. §17.95(h)

42 FR 47840, Sept. 22, 1977
83 FR 18702 , 5/29/2018; 86 FR 50281 , 10/8/2021; 87 FR 576 , 2/4/2022; 88 FR 25538 , 5/30/2023