San Angelo Area Reservoirs: Monitored Water Supply Reservoirs are 35.2% full on 2026-05-03

Historical Data

Date Percent Full Reservoir Storage
(acre-ft) 		Conservation Storage
(acre-ft) 		Conservation Capacity
(acre-ft)
Today 2026-05-03 35.2 307,579 303,336 862,151
Yesterday 2026-05-02 35.2 307,865 303,622 862,151
2 days ago 2026-05-01 35.2 308,001 303,758 862,151
1 week ago 2026-04-26 35.4 309,167 304,924 862,151
1 month ago 2026-04-03 34.1 298,514 294,271 862,151
3 months ago 2026-02-03 35.2 307,688 303,445 862,151
6 months ago 2025-11-03 36.4 317,761 313,518 862,151
1 year ago 2025-05-03 31.0 271,708 267,465 862,151
*

 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 14.2 1,875.44 -32.56 16,410 16,409 115,742 1,327
O H Ivie Water Supply 46.9 1,532.10 -19.40 259,942 259,942 554,340 - n.a. -
Twin Buttes Water Supply and Flood Control 10.3 1,902.89 -37.31 22,526 18,777 182,454 1,563