San Angelo Area Reservoirs: Monitored Water Supply Reservoirs are 34.3% full on 2026-03-23

Historical Data

Date Percent Full Reservoir Storage
(acre-ft) 		Conservation Storage
(acre-ft) 		Conservation Capacity
(acre-ft)
Today 2026-03-23 34.3 299,912 295,669 862,151
Yesterday 2026-03-22 34.3 300,271 296,028 862,151
2 days ago 2026-03-21 34.4 300,506 296,263 862,151
1 week ago 2026-03-16 34.5 301,610 297,367 862,151
1 month ago 2026-02-23 34.8 304,688 300,445 862,151
3 months ago 2025-12-23 36.1 315,236 310,993 862,151
6 months ago 2025-09-23 38.2 333,486 329,243 862,151
1 year ago 2025-03-23 28.8 252,345 248,101 862,151
*

 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 14.3 1,875.56 -32.44 16,569 16,568 115,742 1,331
O H Ivie Water Supply 45.3 1,531.30 -20.20 250,961 250,961 554,340 - n.a. -
Twin Buttes Water Supply and Flood Control 10.9 1,903.62 -36.58 23,681 19,932 182,454 1,616