San Angelo Area Reservoirs: Monitored Water Supply Reservoirs are 41.9% full on 2025-07-15

Historical Data

Date Percent Full Reservoir Storage
(acre-ft) 		Conservation Storage
(acre-ft) 		Conservation Capacity
(acre-ft)
Today 2025-07-15 41.9 365,587 361,344 862,151
Yesterday 2025-07-14 41.8 364,809 360,566 862,151
2 days ago 2025-07-13 41.7 363,673 359,430 862,151
1 week ago 2025-07-08 41.6 362,741 358,498 862,151
1 month ago 2025-06-15 31.2 273,184 268,941 862,151
3 months ago 2025-04-15 28.4 249,024 244,781 862,151
6 months ago 2025-01-15 29.5 259,001 254,758 862,151
1 year ago 2024-07-15 21.2 187,177 182,934 862,151
*

 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 89.1 1,872.00 -0.71 9,062 8,569 9,615 1,254
O C Fisher Water Supply and Flood Control 18.9 1,879.04 -28.96 21,824 21,823 115,742 1,765
O H Ivie Water Supply 54.7 1,535.69 -15.81 303,263 303,263 554,340 - n.a. -
Twin Buttes Water Supply 15.2 1,907.93 -32.27 31,438 27,689 182,454 2,040