2 Colo. Code Regs. § 406-0-D
1. Northeastern Colorado
North Platte Drainage (1018)
North Platte Headwaters 10180001: entire drainage
Upper North Platte 10180002: entire drainage
Upper Laramie 10180010: entire drainage
South Platte Drainage (1019)
South Platte Headwaters 10190001: entire drainage
Upper South Platte 10190002: those portions of the drainage:
South Platte River upstream of Chatfield Reservoir inlet
North Fork South Platte River upstream of the confluence with South Platte
Bear Creek upstream of Bear Creek Reservoir inlet.
Clear Creek 10190004: that portion of the drainage:
Clear Creek upstream of upper property line of the Coors Brewery in Golden
St. Vrain 10190005: those portions of the drainage:
St. Vrain River upstream of the US 36 crossing east of Lyons
Boulder Creek upstream of Colo 157
Big Thompson 10190006: that portion of the drainage:
Big Thompson River upstream of the Dam Store at the canyon mouth
Cache La Poudre 10190007: that portion of the drainage:
Cache La Poudre River upstream of the Overland Trail Bridge in La Porte
Republican Drainage (1025)
North Fork Republican 10250002: those portions of the drainage:
North Fork Republican River upstream of Colo 385
Chief Creek upstream of confluence with North Fork Republican River
2. Southeastern Colorado
Upper Arkansas Drainage (1102)
Arkansas Headwaters 11020001: entire drainage
Upper Arkansas 11020002: those portions of the drainage:
Little Turkey Creek upstream of Colo 115
Turkey Creek upstream of Colo 115
Arkansas River upstream of the confluence with Red Creek
St. Charles River upstream of the Burnt Mill Rd crossing
Muddy Creek upstream of I-25
Greenhorn Creek upstream of 1-25
Graneros Creek upstream of I-25
Fountain 11020003: those portions of the drainage:
Monument Creek and its tributaries west (upstream) of the line defined from:
Colo 105 south from the Douglas County line to a point south of the Town of Palmer Lake then along Monument Creek south to the intersection of N Nevada Ave and I-25, then south along I-25 to Colo 115.
Fountain Creek and its tributaries west (upstream) of the line defined from:
I-25 at Colo 24, south to Colo 115, then south along Colo 115 to the Fremont County line.
Huerfano 11020006: those portions of the drainage:
Huerfano River upstream of Badito
Cucharas River upstream of the confluence with North Abeyta Creek
Bear Creek upstream of I-25
Walsen Arroyo upstream of I-25
Santa Clara Creek upstream of I-25
Apache Creek upstream of I-25
Apishapa 11020007: those portions of the drainage:
Apishapa River upstream of I-25
Del Agua Arroyo upstream of I-25
Purgatoire 11020010: those portions of the drainage:
Berwind Arroyo upstream of I-25
Chicosa Arroyo upstream of I-25
Reilly Canyon upstream of Colo 12
Purgatoire River upstream of Madrid
Long Canyon upstream of Trinidad Reservoir
Raton Creek upstream of Starkville
Upper Canadian Drainage (1108)
Canadian Headwaters 11080001: entire drainage
Upstream from New Mexico border (also referred to as Schwachheim Creek or North Fork Vermejo River)
3. Northwestern Colorado
Colorado Headwaters Drainage (1401)
Colorado Headwaters14010001: entire drainage
Blue 14010002: entire drainage
Eagle 14010003: entire drainage
Roaring Fork 14010004: entire drainage
Colorado Headwaters-Plateau 14010005: entire drainage, except for ponds within the 100-year floodplain of the mainstem Colorado River upstream from Utah border to the exit 90 north bridge from I-70 at Rifle.
Great Divide-Upper Green Drainage (1404)
Upper Green-Flaming Gorge Reservoir 14040106: entire drainage
Vermillion 14040109: entire drainage
White-Yampa River Drainage (1405)
Upper Yampa 14050001: entire drainage
Lower Yampa 14050002: entire drainage
Little Snake 14050003: entire drainage
Upper White 14050005: entire drainage
Piceance-Yellow 14050006: entire drainage
Lower White 14050007: entire drainage
Lower Green Drainage (1406)
Lower Green-Diamond 14060001: entire drainage
4. Southwestern Colorado
Rio Grande Headwaters Drainage (1301)
Rio Grande Headwaters 13010001: entire drainage
Alamosa-Trinchera 13010002: entire drainage
San Luis 13010003: entire drainage
Saguache 13010004: entire drainage
Conejos 13010005: entire drainage
Rio Grande-Elephant Butte Drainage (1302)
Upper Rio Grande 13020101: entire drainage
Rio Chama 13020102: entire drainage Gunnison Drainage (1402)
East-Taylor 14020001: entire drainage
Upper Gunnison 14020002: entire drainage
Tomichi 14020003: entire drainage
North Fork Gunnison 14020004: entire drainage
Lower Gunnison 14020005: entire drainage
Uncompahgre 14020006: entire drainage
Upper Colorado-Dolores Drainage (1403)
Westwater Canyon 14030001: entire drainage
Upper Dolores 14030002: entire drainage
San Miguel 14030003: entire drainage
Lower Dolores 14030004: entire drainage San Juan Drainage (1408)
Upper San Juan 14080101: entire drainage
Piedra 14080102: entire drainage
Animas 14080104: entire drainage
Middle San Juan 14080105: entire drainage
Mancos 14080107: entire drainage
McElmo 14080202: entire drainage
Montezuma 14080203: entire drainage
Maps depicting the above drainages have been prepared and copies may be obtained from the Division.
2 CCR 406-0-D