San Angelo Area Reservoirs: Monitored Water Supply Reservoirs are 31.7% full on 2026-09-03

Historical Data

Date Percent Full Reservoir Storage
(acre-ft) 		Conservation Storage
(acre-ft) 		Conservation Capacity
(acre-ft)
Today 2026-09-03 31.7 277,814 273,571 862,151
Yesterday 2026-09-02 31.8 278,222 273,979 862,151
2 days ago 2026-09-01 31.8 278,677 274,434 862,151
1 week ago 2026-08-27 32.1 281,062 276,819 862,151
1 month ago 2026-08-03 33.8 295,363 291,120 862,151
3 months ago 2026-06-03 35.9 313,766 309,523 862,151
6 months ago 2026-03-03 34.7 303,011 298,768 862,151
1 year ago 2025-09-03 39.4 344,131 339,888 862,151
*

 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 85.9 1,871.75 -0.96 8,750 8,257 9,615 1,236
O C Fisher Water Supply and Flood Control 11.6 1,873.02 -34.98 13,377 13,376 115,742 1,181
O H Ivie Water Supply 43.5 1,530.39 -21.11 240,993 240,993 554,340 - n.a. -
Twin Buttes Water Supply and Flood Control 6.0 1,897.11 -43.09 14,694 10,945 182,454 1,179