San Angelo Area Reservoirs: Monitored Water Supply Reservoirs are 33.0% full on 2026-08-14

Historical Data

Date Percent Full Reservoir Storage
(acre-ft) 		Conservation Storage
(acre-ft) 		Conservation Capacity
(acre-ft)
Today 2026-08-14 33.0 288,896 284,653 862,151
Yesterday 2026-08-13 33.1 289,342 285,099 862,151
2 days ago 2026-08-12 33.1 289,937 285,694 862,151
1 week ago 2026-08-07 33.5 292,924 288,681 862,151
1 month ago 2026-07-14 34.3 299,568 295,325 862,151
3 months ago 2026-05-14 35.0 306,192 301,949 862,151
6 months ago 2026-02-14 35.1 306,494 302,251 862,151
1 year ago 2025-08-14 40.5 353,063 348,820 862,151
*

 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 85.2 1,871.70 -1.01 8,689 8,196 9,615 1,232
O C Fisher Water Supply and Flood Control 12.1 1,873.56 -34.44 14,027 14,026 115,742 1,206
O H Ivie Water Supply 45.0 1,531.18 -20.32 249,620 249,620 554,340 - n.a. -
Twin Buttes Water Supply and Flood Control 7.0 1,898.64 -41.56 16,560 12,811 182,454 1,272