Colorado River Basin Reservoirs: Monitored Water Supply Reservoirs are 63.3% full on 2026-05-29

Historical Data

Date Percent Full Reservoir Storage
(acre-ft) 		Conservation Storage
(acre-ft) 		Conservation Capacity
(acre-ft)
Today 2026-05-29 63.3 2,601,783 2,544,648 4,019,576
Yesterday 2026-05-28 63.2 2,597,554 2,540,419 4,019,576
2 days ago 2026-05-27 62.8 2,583,264 2,526,129 4,019,576
1 week ago 2026-05-22 61.2 2,516,538 2,459,403 4,019,576
1 month ago 2026-04-29 60.2 2,478,434 2,421,299 4,019,576
3 months ago 2026-02-28 60.7 2,496,875 2,439,740 4,019,576
6 months ago 2025-11-29 63.4 2,606,855 2,549,349 4,019,576
1 year ago 2025-05-29 43.3 1,797,928 1,738,765 4,019,576
*

 Percent Full is based on Conservation Storage and Conservation Capacity and doesn't account for storage in flood pool.

Area Map

recent reservoir storage map

Reservoir Storage

Reservoir Type Percent Full Water Level
(ft) 		Height Above Conservation Pool
(ft) 		Reservoir Storage
(acre-ft) 		Conservation Storage
(acre-ft) 		Conservation Capacity
(acre-ft) 		Surface Area
(acres)
Austin Water Supply 96.8 492.31 -0.49 23,814 23,205 23,972 1,552
Brady Creek Water Supply 97.0 1,742.53 -0.47 29,562 27,940 28,808 1,987
Brownwood Water Supply 82.8 1,421.41 -3.19 108,393 108,393 130,868 6,076
Buchanan Water Supply 99.6 1,019.85 -0.15 876,991 863,329 866,694 22,416
Champion Creek Water Supply 39.4 2,061.15 -21.85 16,380 16,380 41,580 826
Coleman Water Supply 86.2 1,714.53 -2.97 32,854 32,836 38,075 1,710
Colorado City Water Supply 52.1 2,058.51 -11.69 16,034 16,034 30,758 - n.a. -
E V Spence Water Supply 11.4 1,845.17 -52.83 58,807 58,807 517,272 3,761
Hords Creek Water Supply and Flood Control 54.1 1,890.75 -9.25 4,386 4,383 8,109 311
Inks Water Supply 94.6 887.07 -0.93 13,273 12,990 13,729 780
J B Thomas Water Supply 25.2 2,229.29 -28.71 51,130 50,457 199,931 3,409
Lyndon B Johnson Water Supply 98.0 824.64 -0.36 129,308 110,468 112,778 6,398
Marble Falls Water Supply 93.5 736.18 -0.82 7,101 7,101 7,597 597
Nasworthy Water Supply 85.4 1,871.71 -1.00 8,701 8,208 9,615 1,233
O C Fisher Water Supply and Flood Control 14.0 1,875.32 -32.68 16,250 16,249 115,742 1,322
O H Ivie Water Supply 48.3 1,532.80 -18.70 268,018 268,018 554,340 - n.a. -
Oak Creek Water Supply 17.8 1,976.20 -23.80 7,112 6,962 39,210 627
Travis Water Supply and Flood Control 81.5 669.52 -11.48 911,949 894,917 1,098,044 16,315
Twin Buttes Water Supply and Flood Control 9.8 1,902.36 -37.84 21,720 17,971 182,454 1,525