Colorado River Basin Reservoirs: Monitored Water Supply Reservoirs are 64.3% full on 2026-09-12

Historical Data

Date Percent Full Reservoir Storage
(acre-ft) 		Conservation Storage
(acre-ft) 		Conservation Capacity
(acre-ft)
Today 2026-09-12 64.3 2,641,596 2,584,461 4,019,576
Yesterday 2026-09-11 64.4 2,644,808 2,587,673 4,019,576
2 days ago 2026-09-10 64.5 2,648,428 2,591,293 4,019,576
1 week ago 2026-09-05 65.0 2,669,507 2,612,372 4,019,576
1 month ago 2026-08-12 67.2 2,758,650 2,701,515 4,019,576
3 months ago 2026-06-12 63.5 2,608,868 2,551,733 4,019,576
6 months ago 2026-03-12 60.7 2,498,777 2,441,642 4,019,576
1 year ago 2025-09-12 66.1 2,712,766 2,655,631 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 97.2 492.37 -0.43 23,907 23,298 23,972 1,555
Brady Creek Water Supply 85.8 1,740.85 -2.15 26,328 24,706 28,808 1,838
Brownwood Water Supply 84.5 1,421.76 -2.84 110,532 110,532 130,868 6,148
Buchanan Water Supply 96.7 1,018.73 -1.27 852,018 838,356 866,694 22,187
Champion Creek Water Supply 42.6 2,062.62 -20.38 17,714 17,714 41,580 862
Coleman Water Supply 79.6 1,713.02 -4.48 30,315 30,297 38,075 1,654
Colorado City Water Supply 53.7 2,058.97 -11.23 16,521 16,521 30,758 - n.a. -
E V Spence Water Supply 9.7 1,842.70 -55.30 50,169 50,169 517,272 3,307
Hords Creek Water Supply and Flood Control 46.8 1,888.75 -11.25 3,800 3,797 8,109 276
Inks Water Supply 95.2 887.17 -0.83 13,351 13,068 13,729 789
J B Thomas Water Supply 20.9 2,226.67 -31.33 42,545 41,872 199,931 3,157
Lyndon B Johnson Water Supply 99.0 824.82 -0.18 130,462 111,622 112,778 6,415
Marble Falls Water Supply 96.3 736.54 -0.46 7,317 7,317 7,597 604
Nasworthy Water Supply 85.9 1,871.75 -0.96 8,750 8,257 9,615 1,236
O C Fisher Water Supply and Flood Control 11.3 1,872.77 -35.23 13,094 13,093 115,742 1,154
O H Ivie Water Supply 42.8 1,530.05 -21.45 237,306 237,306 554,340 - n.a. -
Oak Creek Water Supply 14.3 1,973.87 -26.13 5,763 5,613 39,210 534
Travis Water Supply and Flood Control 93.0 676.83 -4.17 1,037,674 1,020,642 1,098,044 18,088
Twin Buttes Water Supply and Flood Control 5.6 1,896.53 -43.67 14,030 10,281 182,454 1,143