Colorado River Basin Reservoirs: Monitored Water Supply Reservoirs are 62.8% full on 2026-09-28

Historical Data

Date Percent Full Reservoir Storage
(acre-ft) 		Conservation Storage
(acre-ft) 		Conservation Capacity
(acre-ft)
Today 2026-09-28 62.8 2,580,930 2,523,795 4,019,576
Yesterday 2026-09-27 62.8 2,582,558 2,525,423 4,019,576
2 days ago 2026-09-26 62.9 2,585,435 2,528,300 4,019,576
1 week ago 2026-09-21 63.4 2,604,231 2,547,096 4,019,576
1 month ago 2026-08-28 65.8 2,703,859 2,646,724 4,019,576
3 months ago 2026-06-28 64.4 2,644,169 2,587,034 4,019,576
6 months ago 2026-03-28 59.9 2,466,501 2,409,366 4,019,576
1 year ago 2025-09-28 65.0 2,668,085 2,610,950 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 96.7 492.29 -0.51 23,783 23,174 23,972 1,550
Brady Creek Water Supply 84.0 1,740.55 -2.45 25,808 24,186 28,808 1,811
Brownwood Water Supply 82.1 1,421.25 -3.35 107,424 107,424 130,868 6,043
Buchanan Water Supply 95.8 1,018.36 -1.64 843,821 830,159 866,694 22,120
Champion Creek Water Supply 42.2 2,062.44 -20.56 17,548 17,548 41,580 857
Coleman Water Supply 78.4 1,712.75 -4.75 29,870 29,852 38,075 1,634
Colorado City Water Supply 53.1 2,058.79 -11.41 16,330 16,330 30,758 - n.a. -
E V Spence Water Supply 9.4 1,842.17 -55.83 48,436 48,436 517,272 3,233
Hords Creek Water Supply and Flood Control 45.5 1,888.36 -11.64 3,693 3,690 8,109 271
Inks Water Supply 94.8 887.11 -0.89 13,304 13,021 13,729 782
J B Thomas Water Supply 20.1 2,226.10 -31.90 40,761 40,088 199,931 3,103
Lyndon B Johnson Water Supply 98.7 824.78 -0.22 130,205 111,365 112,778 6,411
Marble Falls Water Supply 98.5 736.81 -0.19 7,481 7,481 7,597 610
Nasworthy Water Supply 85.8 1,871.74 -0.97 8,738 8,245 9,615 1,235
O C Fisher Water Supply and Flood Control 10.9 1,872.33 -35.67 12,600 12,599 115,742 1,105
O H Ivie Water Supply 41.8 1,529.52 -21.98 231,721 231,721 554,340 - n.a. -
Oak Creek Water Supply 13.9 1,973.55 -26.45 5,582 5,432 39,210 520
Travis Water Supply and Flood Control 89.6 674.77 -6.23 1,000,901 983,869 1,098,044 17,607
Twin Buttes Water Supply and Flood Control 5.0 1,895.53 -44.67 12,924 9,175 182,454 1,082