Colorado River Basin Reservoirs: Monitored Water Supply Reservoirs are 64.1% full on 2026-06-18

Historical Data

Date Percent Full Reservoir Storage
(acre-ft) 		Conservation Storage
(acre-ft) 		Conservation Capacity
(acre-ft)
Today 2026-06-18 64.1 2,632,084 2,574,949 4,019,576
Yesterday 2026-06-17 64.0 2,631,430 2,574,295 4,019,576
2 days ago 2026-06-16 64.0 2,630,191 2,573,056 4,019,576
1 week ago 2026-06-11 63.5 2,610,668 2,553,533 4,019,576
1 month ago 2026-05-18 60.4 2,484,846 2,427,711 4,019,576
3 months ago 2026-03-18 60.4 2,485,919 2,428,784 4,019,576
6 months ago 2025-12-18 62.8 2,582,650 2,525,515 4,019,576
1 year ago 2025-06-18 45.4 1,884,426 1,826,697 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 96.2 1,742.42 -0.58 29,343 27,721 28,808 1,979
Brownwood Water Supply 82.7 1,421.38 -3.22 108,211 108,211 130,868 6,069
Buchanan Water Supply 99.2 1,019.71 -0.29 873,855 860,193 866,694 22,385
Champion Creek Water Supply 39.2 2,061.08 -21.92 16,314 16,314 41,580 825
Coleman Water Supply 87.2 1,714.75 -2.75 33,231 33,213 38,075 1,722
Colorado City Water Supply 51.1 2,058.21 -11.99 15,716 15,716 30,758 - n.a. -
E V Spence Water Supply 11.1 1,844.76 -53.24 57,296 57,296 517,272 3,632
Hords Creek Water Supply and Flood Control 53.2 1,890.54 -9.46 4,321 4,318 8,109 307
Inks Water Supply 94.1 886.98 -1.02 13,203 12,920 13,729 775
J B Thomas Water Supply 25.0 2,229.16 -28.84 50,688 50,015 199,931 3,395
Lyndon B Johnson Water Supply 98.0 824.64 -0.36 129,308 110,468 112,778 6,398
Marble Falls Water Supply 95.0 736.37 -0.63 7,215 7,215 7,597 601
Nasworthy Water Supply 85.4 1,871.71 -1.00 8,701 8,208 9,615 1,233
O C Fisher Water Supply and Flood Control 13.7 1,875.00 -33.00 15,825 15,824 115,742 1,310
O H Ivie Water Supply 48.2 1,532.73 -18.77 267,211 267,211 554,340 - n.a. -
Oak Creek Water Supply 17.6 1,976.08 -23.92 7,045 6,895 39,210 621
Travis Water Supply and Flood Control 85.0 671.84 -9.16 950,429 933,397 1,098,044 16,863
Twin Buttes Water Supply and Flood Control 9.2 1,901.62 -38.58 20,621 16,872 182,454 1,472