Colorado River Basin Reservoirs: Monitored Water Supply Reservoirs are 60.1% full on 2026-04-18

Historical Data

Date Percent Full Reservoir Storage
(acre-ft) 		Conservation Storage
(acre-ft) 		Conservation Capacity
(acre-ft)
Today 2026-04-18 60.1 2,473,539 2,416,404 4,019,576
Yesterday 2026-04-17 60.1 2,472,544 2,415,409 4,019,576
2 days ago 2026-04-16 60.1 2,473,533 2,416,398 4,019,576
1 week ago 2026-04-11 59.3 2,439,596 2,382,461 4,019,576
1 month ago 2026-03-18 60.4 2,485,881 2,428,746 4,019,576
3 months ago 2026-01-18 61.4 2,525,375 2,468,240 4,019,576
6 months ago 2025-10-18 63.5 2,609,924 2,552,789 4,019,576
1 year ago 2025-04-18 42.5 1,764,886 1,707,751 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 97.1 492.36 -0.44 23,891 23,282 23,972 1,554
Brady Creek Water Supply 95.2 1,742.27 -0.73 29,040 27,418 28,808 1,966
Brownwood Water Supply 82.6 1,421.37 -3.23 108,150 108,150 130,868 6,067
Buchanan Water Supply 96.0 1,018.44 -1.56 845,591 831,929 866,694 22,134
Champion Creek Water Supply 39.9 2,061.38 -21.62 16,603 16,603 41,580 832
Coleman Water Supply 87.8 1,714.87 -2.63 33,438 33,420 38,075 1,730
Colorado City Water Supply 53.0 2,058.77 -11.43 16,309 16,309 30,758 - n.a. -
E V Spence Water Supply 11.5 1,845.41 -52.59 59,714 59,714 517,272 3,792
Hords Creek Water Supply and Flood Control 54.9 1,890.98 -9.02 4,456 4,453 8,109 316
Inks Water Supply 95.0 887.14 -0.86 13,328 13,045 13,729 784
J B Thomas Water Supply 26.8 2,230.21 -27.79 54,316 53,643 199,931 3,516
Lyndon B Johnson Water Supply 98.7 824.78 -0.22 130,205 111,365 112,778 6,411
Marble Falls Water Supply 96.6 736.58 -0.42 7,341 7,341 7,597 605
Nasworthy Water Supply 86.9 1,871.83 -0.88 8,849 8,356 9,615 1,241
O C Fisher Water Supply and Flood Control 14.3 1,875.52 -32.48 16,516 16,515 115,742 1,330
O H Ivie Water Supply 47.1 1,532.19 -19.31 260,980 260,980 554,340 - n.a. -
Oak Creek Water Supply 18.4 1,976.64 -23.36 7,372 7,222 39,210 645
Travis Water Supply and Flood Control 72.7 663.29 -17.71 814,793 797,761 1,098,044 14,882
Twin Buttes Water Supply and Flood Control 10.4 1,902.97 -37.23 22,647 18,898 182,454 1,569