Largest Reservoirs in Alabama

Alabama has 2177 dams with recorded storage capacity. The largest is Lewis Smith with 1,670,600 acre-feet of maximum storage. One acre-foot equals about 326,000 gallons — enough to supply roughly two households for a year.

#	Dam	County	Max Storage (acre-ft)	Height (ft)	Purpose	Year
1	Lewis Smith	Walker	1,670,600	300	Hydroelectric	1961
2	Martin	Tallapoosa	1,622,000	168	Hydroelectric	1926
3	Guntersville Dam	Marshall	1,048,700	94	Flood Risk Reduction	1939
4	Walter F. George Lock And Dam	Clay	934,400	171	Hydroelectric	1962
5	Wilson Dam	Lauderdale	674,220	137	Flood Risk Reduction	1924
6	Logan Martin	St. Clair	650,000	142	Hydroelectric	1964
7	R. L. Harris West Saddle Dike	Randolph	426,000	40	Hydroelectric	1983
8	Millers Ferry Lock And Dam	Wilcox	331,800	100	Recreation	1970
9	Weiss - Highway 411 Dike	Cherokee	306,400	90	Hydroelectric	1961
10	John Hollis Bankhead Lock And Dam	Tuscaloosa	296,000	111	Navigation	1975
11	Lay	Coosa	262,800	130	Hydroelectric	1914
12	Jordan	Elmore	235,000	125	Hydroelectric	1928
13	Robert F. Henry Lock And Dam	Lowndes	234,200	110	Navigation	1974
14	Wheeler Dam	Lauderdale	228,045	175	Hydroelectric	1936
15	Coffeeville Lock And Dam	Choctaw	190,800	60	Navigation	1962
16	Holt Lock And Dam	Tuscaloosa	187,400	120	Navigation	1968
17	Lake Tuscaloosa Dam	Tuscaloosa	180,000	125	Recreation	1971
18	Mitchell	Chilton	172,000	106	Hydroelectric	1923
19	Demopolis Lock And Dam	Marengo	150,000	63	Navigation	1955
20	J.b. Converse Reservoir Dam	Mobile	136,500	75	Water Supply	1952
21	H. Neely Henry	St. Clair	121,860	104	Hydroelectric	1966
22	Cedar Creek Dam	Franklin	111,500	102	Flood Risk Reduction	1979
23	Claiborne Lock And Dam	Monroe	96,360	80	Navigation	1971
24	Tom Bevill Lock And Dam	Pickens	60,400	75	Navigation	1979
25	A.i. Selden Lock And Dam	Greene	58,650	71	Navigation	1958
26	Howell Heflin Lock And Dam	Greene	58,000	56	Navigation	1978
27	Yates	Elmore	54,000	87	Hydroelectric	1928
28	Little Bear Creek Dam	Franklin	52,500	89	Flood Risk Reduction	1975
29	Walter Bouldin Saddle Dike	Elmore	48,000	10	Hydroelectric	1967
30	Upper Bear Creek Dam	Marion	40,100	85	Flood Risk Reduction	1978
31	Bear Creek Dam	Franklin	39,700	68	Flood Risk Reduction	1969
32	Lake Purdy Dam	Shelby	26,400	55	Flood Risk Reduction	1964
33	Lake Catoma Dam	Cullman	21,400	100	Recreation	1966
34	Thurlow	Elmore	18,250	62	Hydroelectric	1930
35	George W. Andrews Lock And Dam	Early	18,180	59	Navigation	1963
36	Tallaseehatchee Creek W/s Dam Site 1	Talladega	17,666	114	Flood Risk Reduction	1980
37	Lake Tholocco	Dale	17,600	45	Recreation	1935
38	Gantt	Covington	14,645	44	Hydroelectric	1924
39	Bayview Lake	Jefferson	14,200	100	Water Supply	1910
40	Choccolocco Creek W/s Dam Site 6	Calhoun	14,105	91	Flood Risk Reduction	1977
41	William Bacon Oliver Lock And Dam	Tuscaloosa	13,800	67	Navigation	1992
42	Choccolocco Creek W/s Dam Site 11	Calhoun	13,331	75	Flood Risk Reduction	1971
43	Cheaha Creek W/s Dam Site 6	Talladega	12,580	79	Flood Risk Reduction	1970
44	Sehoy Plantation Lake Dam	Bullock	10,443	44	Flood Risk Reduction	1974
45	Lake Nicol Dam	Tuscaloosa	10,349	82	Water Supply	1954
46	Sougahatchee	Lee	10,200	43	Recreation	1932
47	Tallaseehatchee Creek W/s Dam Site 4	Talladega	10,162	86	Flood Risk Reduction	1982
48	Ketchepedrake Creek W/s Dam Site 15	Clay	9,700	50	Flood Risk Reduction	1978
49	Terrapin Creek - Site 31	Cleburne	9,600	73	Flood Risk Reduction	1972
50	Miller Steam Plant Ash Pond	Jefferson	9,500	158	Other	1977

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