Largest Reservoirs in Texas

Texas has 7396 dams with recorded storage capacity. The largest is Sam Rayburn Dam with 6,520,000 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	Sam Rayburn Dam	Jasper	6,520,000	130	Flood Risk Reduction	1965
2	Amistad Dam	Val Verde	5,128,000	287	Flood Risk Reduction	1969
3	Mansfield Dam	Travis	3,223,000	278	Flood Risk Reduction	1942
4	Livingston	San Jacinto	3,208,450	90	Hydroelectric	1969
5	Falcon Dam	Starr	3,177,000	175	Flood Risk Reduction	1953
6	Wright Patman Dam - Saddle Dike	Cass	2,650,000	33	Flood Risk Reduction	1953
7	Sanford Dam	Hutchinson	2,385,983	228	Recreation	1965
8	Whitney Dam - Kopperl Levee	Bosque	2,100,400	166	Flood Risk Reduction	1951
9	Whitney Dam	Hill	2,100,400	166	Flood Risk Reduction	1951
10	Ferrells Bridge Dam	Marion	1,998,740	97	Flood Risk Reduction	1958
11	Ray Roberts Dam	Denton	1,931,900	141	Flood Risk Reduction	1986
12	Belton Dam	Bell	1,876,700	192	Flood Risk Reduction	1954
13	Lewisville Dam	Denton	1,804,300	135	Flood Risk Reduction	1955
14	Richland Creek Dam	Freestone	1,686,587	96	Water Supply	1987
15	Iron Bridge Dam	Van Zandt	1,660,023	85	Water Supply	1960
16	Joe B Hogsett Dam	Henderson	1,423,292	91	Irrigation	1966
17	Morris Sheppard Dam	Palo Pinto	1,365,000	189	Irrigation	1941
18	Lake Fork Dam	Wood	1,269,599	85	Water Supply	1980
19	Simon Freese Dam	Coleman	1,235,813	149	Water Supply	1989
20	Canyon Lake Dam - Dike A	Comal	1,208,350	224	Flood Risk Reduction	1964
21	Canyon Lake Dam	Comal	1,208,350	224	Flood Risk Reduction	1964
22	Buchanan Dam	Burnet	1,180,000	146	Irrigation	1937
23	Robert Lee Dam	Coke	1,139,200	140	Water Supply	1969
24	Twin Buttes Dam	Tom Green	1,088,152	134	Flood Risk Reduction	1963
25	Lake Kemp Dam	Baylor	1,078,000	115	Flood Risk Reduction	1923
26	Blackburn Crossing Dam		1,045,000	75	Water Supply	1962
27	Somerville Dam	Washington	1,042,000	80	Flood Risk Reduction	1967
28	Lavon Dam	Collin	1,020,500	81	Flood Risk Reduction	1952
29	Stillhouse Hollow Dam - Dike	Bell	1,013,800	200	Flood Risk Reduction	1968
30	Stillhouse Hollow Dam	Bell	1,013,800	200	Flood Risk Reduction	1968
31	Lake Brownwood Dam	Brown	1,011,829	120	Water Supply	1933
32	Choke Canyon Dam	Live Oak	1,009,699	141	Other	1982
33	Waco Dam	McLennan	969,000	145	Flood Risk Reduction	1965
34	Bridgeport Dam	Wise	923,814	130	Water Supply	1931
35	Hubbard Creek Dam	Stephens	829,983	112	Water Supply	1962
36	Cooper Dam	Delta	797,300	95	Flood Risk Reduction	1991
37	Grapevine Dam	Tarrant	788,000	137	Flood Risk Reduction	1952
38	O.c. Fisher Dam	Tom Green	766,000	130	Flood Risk Reduction	1952
39	Bois D Arc Lake Dam	Fannin	765,340	90		2023
40	Conroe Dam	Montgomery	706,970	82	Irrigation	1973
41	Lake Arrowhead Dam	Clay	685,000	62	Water Supply	1966
42	Eagle Mountain Dam	Tarrant	677,127	85	Irrigation	1932
43	Granger Dam	Williamson	650,000	115	Water Supply	1979
44	Joe Pool Dam	Dallas	642,500	108	Flood Risk Reduction	1986
45	Proctor Dam	Comanche	585,800	86	Flood Risk Reduction	1964
46	Rockwall-forney Dam	Kaufman	575,040	68	Water Supply	1969
47	Sterling C Robertson Dam	Leon	557,878	62	Irrigation	1978
48	Wesley E Seale Dam	San Patricio	531,000	81	Water Supply	1958
49	Red Bluff Dam	Reeves	516,785	106	Irrigation	1936
50	Pat Mayse Dam	Lamar	457,800	96	Flood Risk Reduction	1967

← All dams in Texas · Largest reservoirs nationwide