Colorado River Basin Reservoirs: Monitored Water Supply Reservoirs are 66.9% full on 2026-08-15

Historical Data

Date Percent Full Reservoir Storage
(acre-ft) 		Conservation Storage
(acre-ft) 		Conservation Capacity
(acre-ft)
Today 2026-08-15 66.9 2,747,284 2,690,149 4,019,576
Yesterday 2026-08-14 67.0 2,750,202 2,693,067 4,019,576
2 days ago 2026-08-13 67.1 2,754,540 2,697,405 4,019,576
1 week ago 2026-08-08 67.6 2,772,726 2,715,591 4,019,576
1 month ago 2026-07-15 63.2 2,597,951 2,540,816 4,019,576
3 months ago 2026-05-15 60.5 2,490,883 2,433,748 4,019,576
6 months ago 2026-02-15 61.1 2,513,793 2,456,658 4,019,576
1 year ago 2025-08-15 68.0 2,788,775 2,731,640 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 95.7 492.14 -0.66 23,551 22,942 23,972 1,542
Brady Creek Water Supply 89.8 1,741.44 -1.56 27,486 25,864 28,808 1,892
Brownwood Water Supply 88.9 1,422.70 -1.90 116,401 116,401 130,868 6,341
Buchanan Water Supply 98.6 1,019.47 -0.53 868,489 854,827 866,694 22,333
Champion Creek Water Supply 43.9 2,063.26 -19.74 18,269 18,269 41,580 878
Coleman Water Supply 82.5 1,713.68 -3.82 31,414 31,396 38,075 1,678
Colorado City Water Supply 56.1 2,059.65 -10.55 17,268 17,268 30,758 - n.a. -
E V Spence Water Supply 10.3 1,843.58 -54.42 53,132 53,132 517,272 3,432
Hords Creek Water Supply and Flood Control 49.3 1,889.46 -10.54 4,000 3,997 8,109 287
Inks Water Supply 94.5 887.05 -0.95 13,257 12,974 13,729 778
J B Thomas Water Supply 22.7 2,227.74 -30.26 45,973 45,300 199,931 3,251
Lyndon B Johnson Water Supply 98.7 824.78 -0.22 130,205 111,365 112,778 6,411
Marble Falls Water Supply 95.2 736.40 -0.60 7,233 7,233 7,597 602
Nasworthy Water Supply 85.2 1,871.70 -1.01 8,689 8,196 9,615 1,232
O C Fisher Water Supply and Flood Control 12.1 1,873.52 -34.48 13,979 13,978 115,742 1,204
O H Ivie Water Supply 44.9 1,531.12 -20.38 248,949 248,949 554,340 - n.a. -
Oak Creek Water Supply 15.4 1,974.68 -25.32 6,202 6,052 39,210 565
Travis Water Supply and Flood Control 98.3 680.01 -0.99 1,096,340 1,079,308 1,098,044 18,809
Twin Buttes Water Supply and Flood Control 7.0 1,898.55 -41.65 16,447 12,698 182,454 1,267