San Angelo Area Reservoirs: Monitored Water Supply Reservoirs are 34.9% full on 2026-07-03

Historical Data

Date Percent Full Reservoir Storage
(acre-ft) 		Conservation Storage
(acre-ft) 		Conservation Capacity
(acre-ft)
Today 2026-07-03 34.9 305,053 300,810 862,151
Yesterday 2026-07-02 34.9 305,506 301,263 862,151
2 days ago 2026-07-01 35.0 306,220 301,977 862,151
1 week ago 2026-06-26 35.5 310,180 305,937 862,151
1 month ago 2026-06-03 35.9 313,650 309,407 862,151
3 months ago 2026-04-03 34.1 298,514 294,271 862,151
6 months ago 2026-01-03 35.8 313,189 308,946 862,151
1 year ago 2025-07-03 30.3 265,349 261,106 862,151
*

 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 85.8 1,871.74 -0.97 8,738 8,245 9,615 1,235
O C Fisher Water Supply and Flood Control 13.1 1,874.47 -33.53 15,153 15,152 115,742 1,266
O H Ivie Water Supply 47.3 1,532.29 -19.21 262,134 262,134 554,340 - n.a. -
Twin Buttes Water Supply and Flood Control 8.4 1,900.50 -39.70 19,028 15,279 182,454 1,391