Colorado River Basin Reservoirs: Monitored Water Supply Reservoirs are 64.8% full on 2026-09-08

Historical Data

Date Percent Full Reservoir Storage
(acre-ft) 		Conservation Storage
(acre-ft) 		Conservation Capacity
(acre-ft)
Today 2026-09-08 64.8 2,661,941 2,604,806 4,019,576
Yesterday 2026-09-07 64.8 2,662,059 2,604,924 4,019,576
2 days ago 2026-09-06 64.9 2,665,502 2,608,367 4,019,576
1 week ago 2026-09-01 65.4 2,686,662 2,629,527 4,019,576
1 month ago 2026-08-08 67.6 2,772,726 2,715,591 4,019,576
3 months ago 2026-06-08 63.6 2,615,232 2,558,097 4,019,576
6 months ago 2026-03-08 60.7 2,497,780 2,440,645 4,019,576
1 year ago 2025-09-08 66.4 2,724,989 2,667,854 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 99.1 492.67 -0.13 24,376 23,767 23,972 1,574
Brady Creek Water Supply 86.3 1,740.93 -2.07 26,471 24,849 28,808 1,846
Brownwood Water Supply 85.1 1,421.90 -2.70 111,394 111,394 130,868 6,176
Buchanan Water Supply 97.0 1,018.85 -1.15 854,681 841,019 866,694 22,210
Champion Creek Water Supply 42.6 2,062.63 -20.37 17,723 17,723 41,580 862
Coleman Water Supply 79.9 1,713.09 -4.41 30,430 30,412 38,075 1,656
Colorado City Water Supply 53.9 2,059.03 -11.17 16,586 16,586 30,758 - n.a. -
E V Spence Water Supply 9.8 1,842.86 -55.14 50,700 50,700 517,272 3,328
Hords Creek Water Supply and Flood Control 47.2 1,888.85 -11.15 3,827 3,824 8,109 277
Inks Water Supply 95.0 887.13 -0.87 13,320 13,037 13,729 784
J B Thomas Water Supply 21.1 2,226.77 -31.23 42,861 42,188 199,931 3,166
Lyndon B Johnson Water Supply 98.9 824.80 -0.20 130,333 111,493 112,778 6,413
Marble Falls Water Supply 95.7 736.46 -0.54 7,269 7,269 7,597 603
Nasworthy Water Supply 86.3 1,871.78 -0.93 8,787 8,294 9,615 1,238
O C Fisher Water Supply and Flood Control 11.4 1,872.90 -35.10 13,241 13,240 115,742 1,169
O H Ivie Water Supply 43.1 1,530.21 -21.29 239,041 239,041 554,340 - n.a. -
Oak Creek Water Supply 14.5 1,973.98 -26.02 5,822 5,672 39,210 538
Travis Water Supply and Flood Control 93.9 677.39 -3.61 1,047,839 1,030,807 1,098,044 18,216
Twin Buttes Water Supply and Flood Control 5.8 1,896.74 -43.46 14,268 10,519 182,454 1,156