Ala. Admin. Code r. 335-6-10-.11

Current through Register Vol. 42, No. 11, August 30, 2024

Section 335-6-10-.11 - Water Quality Criteria Applicable To Specific Lakes

(1) For certain lakes and reservoirs, waterbody-specific criteria are appropriate to enhance nutrient management. The response to nutrient input may vary significantly lake-to-lake, and for a given lake year-to-year, depending on a number of factors such as rainfall distribution and hydraulic retention time. For this reason, lake nutrient quality targets necessary to maintain and protect existing uses, expressed as chlorophyll a criteria, may also vary lake-to-lake. Because the relationship between nutrient input and lake chlorophyll a levels is not always well-understood, it may be necessary to revise the criteria as additional water quality data and improved assessment tools become available.

(2) The following lake-specific criteria apply to the waters listed below, in addition to any other applicable criteria commensurate with the designation usage of such waters.

(a) The Alabama River Basin

1. Claiborne Lake: those waters impounded by Claiborne Lock and Dam on the Alabama River. The lake has a surface area of 5,930 acres at full pool.

(i) Chlorophyll a (corrected, as described in StandardMethods for the Examination of Water and Wastewater,. 20^th Edition, 1998): the mean of the photic-zone composite chlorophyll a samples collected monthly April through October shall not exceed 15 µg/1, as measured at the deepest point, main river channel, dam forebay.

2. Dannelly Lake: those waters impounded by Millers Ferry Lock and Dam on the Alabama River. The lake has a surface area of 17,200 acres at full pool.

(b) The Black Warrior River Basin

1. Warrior Lake: those waters impounded by Warrior Lock and Dam on the Black Warrior River. The lake has a surface area of 7,800 acres at full pool.

2. Oliver Lake: those waters impounded by William Bacon Oliver Lock and Dam on the Black Warrior River. The lake has a surface area of 800 acres at full pool.

(i) Chlorophyll a (corrected, as described in Standard Methods for the Examination of Water and Wastewater,. 20^th Edition, 1998): the mean of the photic-zone composite chlorophyll a samples collected monthly April through October shall not exceed 12 µg/1, as measured at the deepest point, main river channel, dam forebay.

3. Holt Lake: those waters impounded by Holt Lock and Dam on the Black Warrior River. The lake has a surface area of 3,200 acres at full pool.

4. Lake Tuscaloosa: those waters impounded by Lake Tuscaloosa Dam on the North River. The lake has a surface area of 5,885 acres at full pool.

5. Bankhead Lake: those waters impounded by John Hollis Bankhead Lock and Dam on the Black Warrior River. The lake has a surface area of 9,200 acres at full pool.

6. Smith Lake: those waters impounded by Lewis M. Smith Dam on the Sipsey Fork River. The lake has a surface area of 21,200 acres at full pool.

(i) Chlorophyll a (corrected, as described in Standard Methods for the Examination of Water and Wastewater, 20^th Edition, 1998): the mean of the photic-zone composite chlorophyll a samples collected monthly April through October shall not exceed 5 µg/1, as measured at the deepest point, main river channel, dam forebay; 5 µg/1, as measured at the deepest point, main river channel, at Duncan Creek/Sipsey River confluence (downstream of the Alabama Highway 257 bridge); and 5 µg/1, as measured at the deepest point, main river channel, immediately downstream of Brushy Creek confluence.

7. Inland Lake: those waters impounded by Inland Lake Dam on the Blackburn Fork of the Little Warrior River. The lake has a surface area of 1,095 acres at full pool.

(c) The Cahaba River Basin

1. Lake Purdy: those waters impounded by Lake Purdy Dam at the headwaters of the Cahaba River. The lake has a surface area of 1,050 acres at full pool.

(d) The Chattahoochee River Basin

1. Walter F. George Lake: those waters impounded by Walter F. George Lock and Dam on the Chattahoochee River. The lake has a surface area of 45,181 acres at full power pool, 18,672 acres of which are within Alabama. The Alabama-Georgia state line is represented by the west bank of the original river channel, and the points of measurement for the criteria given below are located in Georgia waters.

2. Lake Harding: those waters impounded by Bartletts Ferry Dam on the Chattahoochee River. The lake has a surface area of 5,850 acres at full pool, 2,176 acres of which are within Alabama. The point of measurement for the criterion given below is located in Georgia waters.

(i) Chlorophyll a (corrected, as described in Standard Methods for the Examination of Water and Wastewater,. 20^th Edition, 1998): the mean of the photic-zone composite chlorophyll a samples collected monthly April through October shall not exceed 15 µg/1, as measured at the deepest point, main river channel, dam forebay.

3. West Point Lake: those waters impounded by West Point Dam on the Chattahoochee River. The lake has a surface area of 25,864 acres at full power pool, 2,765 acres of which are within Alabama. The point of measurement for the criterion given below is located in Georgia waters.

(e) The Coosa River Basin

1. Weiss Lake: those waters impounded by Weiss Dam on the Coosa River. The lake has a surface area of 30,200 acres at full pool.

(i) Chlorophyll a (corrected, as described in Standard Methods for the Examination of Water and Wastewater, 20^th Edition, 1998) : the mean of photic-zone composite chlorophyll a samples collected monthly April through October shall not exceed 20 µg/1, as measured at the deepest point, main river channel, power dam forebay; or 20 µg/1, as measured at the deepest point, main river channel, immediately upstream of causeway (Alabama Highway 9) at Cedar Bluff. If the mean of photic-zone composite chlorophyll a samples collected monthly April through October is significantly less than 20 µg/1 for a given year, the Department will re-evaluate the chlorophyll a criteria, associated nutrient management strategies, and available data and information, and recommend changes, if appropriate, to maintain and protect existing uses.

2. Neely Henry Lake: those waters impounded by Neely Henry Dam on the Coosa River. The lake has a surface area of 11,235 acres at full pool.

(i) Chlorophyll a (corrected, as described in Standard Methods for the Examination of Water and Wastewater,. 20^th Edition, 1998) : the mean of photic-zone composite chlorophyll a samples collected monthly April through October shall not exceed 18 µg/1, as measured at the deepest point, main river channel, dam forebay; or 18 µg/1, as measured at the deepest point, main river channel, immediately upstream of Alabama Highway 77 bridge.

3. Logan Martin Lake: those waters impounded by Logan Martin Dam on the Coosa River. The lake has a surface area of 15,263 acres at full pool.

4. Lay Lake: those waters impounded by Lay Dam on the Coosa River. The lake has a surface area of 12,000 acres at full pool.

5. Mitchell Lake: those waters impounded by Mitchell Dam on the Coosa River. The lake has a surface area of 5,850 acres at full pool.

6. Jordan Lake: those waters impounded by Jordan Dam on the Coosa River. The lake has a surface area of 6,800 acres at full pool.

(i) Chlorophyll a (corrected, as described in Standard Methods for the Examination of Water and Wastewater,. 20^th Edition, 1998) : the mean of photic-zone composite chlorophyll a samples collected monthly April through October shall not exceed 14 µg/1, as measured at the deepest point, main river channel, dam forebay.

(f) The Escambia River Basin

1. Point A Lake: those waters impounded by Point A Dam on the Conecuh River. The lake has a surface area of 900 acres at full pool.

2. Gantt Lake: those waters impounded by Gantt Dam on the Conecuh River. The lake has a surface area of 2,767 acres at full pool.

(g) The Escatawpa River Basin

1. Big Creek Lake (J.B. Converse Lake): those waters impounded on Big Creek. The lake is a tributary-storage reservoir and has a surface area of 3,600 acres at full pool.

(h) The Tallapoosa River Basin

1. Thurlow Lake: those waters impounded by Thurlow Dam on the Tallapoosa River. The reservoir has a surface area of 574 acres at full pool.

(i) Chlorophyll a (corrected, as described in Standard Methods for the Examination of Water and Wastewater,. 20^th Edition, 1998): the mean of the photic-zone composite chlorophyll a samples collected monthly April through October shall not exceed 5 µg/1, as measured at the deepest point, main river channel, dam forebay.

2. Yates Lake: those waters impounded by Yates Dam on the Tallapoosa River. The lake has a surface area of 2,000 acres at full pool.

3. Lake Martin: those waters impounded by Martin Dam on the Tallapoosa River. The lake has a surface area of 40,000 acres at full pool.

(i) Chlorophyll a (corrected, as described in Standard Methods for the Examination of Water and Wastewater, 20^th Edition, 1998): the mean of the photic-zone composite chlorophyll a samples collected monthly April through October shall not exceed 5 µg/1, as measured at the deepest point, main river channel, dam forebay; or 5 µg/1, as measured at the deepest point main river channel, immediately upstream of Blue Creek embayment; or 5 µg/1 as measured at the deepest point, main creek channel, immediately upstream of Alabama Highway 63 (Kowaliga) bridge.

4. R. L. Harris Lake: those waters impounded by R. L. Harris Dam on the Tallapoosa River. The lake has a surface area of 10,660 acres at full pool.

(i) Chlorophyll a (corrected, as described in Standard Methods for the examination of Water and Wastewater, 20^th Edition, 1998) : the mean to photic zone composite chlorophyll a samples collected monthly April through October shall not exceed 10 µg/l, as measured at the deepest point, main river channel, dam forebay; or 12 µg/1, as measured at the deepest point, main river channel, dam forebay; or 12 µg/l, as measured at the deepest point, main river channel, immediately upstream of the Tallapoosa River - Little Tallapoosa River conference.

(i) The Tennessee River Basin

1. Pickwick Lake: those waters impounded by Pickwick Dam on the Tennessee River. The reservoir has a surface area of 43,100 acres at full pool, 33,700 acres of which are within Alabama. The point of measurement for the criterion given below is located in Tennessee waters.

(i) Chlorophyll a (corrected, as described in Standard Methods for the Examination of Water and Wastewater,. 20^th Edition, 1998): the mean of the photic-zone composite chlorophyll a samples collected monthly April through September shall not exceed 18 µg/1, as measured at the deepest point, main river channel, dam forebay.

2. Wilson Lake: those waters impounded by Wilson Dam on the Tennessee River. The lake has a surface area of 15,930 acres at full pool.

3. Wheeler Lake: those waters impounded by Wheeler Dam on the Tennessee River. The lake has a surface area of 67,100 acres at full pool.

4. Guntersville Lake: those waters impounded by Guntersville Dam on the Tennessee River. The lake has a surface area of 69,700 acres at full pool, 67,900 of which are within Alabama.

5. Cedar Creek Lake: those waters impounded by Cedar Creek Dam on Cedar Creek. The reservoir has a surface area of 4,200 acres at full pool.

(i) Chlorophyll a (corrected, as described in Standard Methods for the Examination of Water and Wastewater,. 20^th Edition, 1998): the mean of the photic-zone composite chlorophyll a samples collected monthly April through October shall not exceed 8 µg/1, as measured at the deepest point, main creek channel, dam forebay.

6. Little Bear Creek Lake: those waters impounded by Little Bear Dam on Little Bear Creek. The reservoir has a surface area of 1,600 acres at full pool.

7. Bear Creek Lake: those waters impounded by Bear Creek Dam on Bear Creek. The reservoir has a surface area of 670 acres at full pool.

8. Upper Bear Creek Lake: those waters impounded by Upper Bear Creek Dam on Upper Bear Creek. The reservoir has a surface area of 1,850 acres at full pool.

(j) The Tombigbee River Basin

1. Coffeeville Lake: those waters impounded by Coffeeville Dam on the Tombigbee River. The lake has a surface area of 8,500 acres at full pool.

(i) Chlorophyll a (corrected, as described in Standard Methods for the Examination of Water and Wastewater,. 20^th Edition, 1998) : the mean of photic-zone composite chlorophyll a samples collected monthly April through October shall not exceed 10 µg/1, as measured at the deepest point, main river channel, upstream of the lock canal.

2. Demopolis Lake: those waters impounded by Demopolis Dam downstream of the confluence of the Tombigbee and the Black Warrior Rivers. The lake has a surface area of 10,000 acres at full pool.

3. Gainesville Lake: those waters impounded by Gainesville Dam on the Tombigbee River. The lake has a surface area of 6,400 acres at full pool.

4. Aliceville Lake: those waters impounded by Tom Bevill Dam on the Tombigbee River. The lake has a surface area of 8,300 acres at full pool.

(k) The Yellow River Basin

1. Lake Jackson: This natural lake, located in Florala, Alabama, has a surface area of 256 acres at full pool.

(i) Chlorophyll a (corrected, as described in Standard Methods for the Examination of Water and Wastewater,. 20^th Edition, 1998): the mean of the photic-zone composite chlorophyll a samples collected monthly April through October shall not exceed 7 µg/1, as measured at mid-lake.

2. Lake Frank Jackson: those waters impounded on Lightwood Knot Creek. The lake has a surface area of 1,000 acres at full pool.

Ala. Admin. Code r. 335-6-10-.11

New Rule: Filed December 8, 2000; effective January 12, 2001. Amended: Filed April 11, 2002; effective May 16, 2002. Amended: Filed April 22, 2004; effective May 27, 2004. Amended: Filed August 17, 2005; effective September 21, 2005. Amended: Filed December 14, 2010; effective January 18, 2011. Amended: Filed February 25, 2014; effective April 1, 2014.

Amended by Alabama Administrative Monthly Volume XXXV, Issue No. 03, December 30, 2016, eff. 2/3/2017.

Authors: James E. Mclndoe, Lynn Sisk, Chris L. Johnson

Statutory Authority:Code of Ala. 1975, §§ 22-22-9, 22-22A-5, 22-22A-6, 22-22A-8.