San Angelo Area Reservoirs: Monitored Water Supply Reservoirs are 37.4% full on 2025-10-11

Historical Data

Date Percent Full Reservoir Storage
(acre-ft) 		Conservation Storage
(acre-ft) 		Conservation Capacity
(acre-ft)
Today 2025-10-11 37.4 326,920 322,677 862,151
Yesterday 2025-10-10 37.5 327,188 322,945 862,151
2 days ago 2025-10-09 37.5 327,530 323,287 862,151
1 week ago 2025-10-04 37.8 329,877 325,634 862,151
1 month ago 2025-09-11 38.9 339,584 335,341 862,151
3 months ago 2025-07-11 41.7 363,467 359,224 862,151
6 months ago 2025-04-11 28.5 250,301 246,058 862,151
1 year ago 2024-10-11 25.9 227,297 223,054 862,151
*

 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)
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 16.0 1,876.96 -31.04 18,505 18,504 115,742 1,462
O H Ivie Water Supply 49.0 1,533.13 -18.37 271,875 271,875 554,340 - n.a. -
Twin Buttes Water Supply 13.2 1,906.06 -34.14 27,839 24,090 182,454 1,833