San Angelo Area Reservoirs: Monitored Water Supply Reservoirs are 35.0% full on 2026-02-11

Historical Data

Date Percent Full Reservoir Storage
(acre-ft) 		Conservation Storage
(acre-ft) 		Conservation Capacity
(acre-ft)
Today 2026-02-11 35.0 306,353 302,110 862,151
Yesterday 2026-02-10 35.1 306,461 302,218 862,151
2 days ago 2026-02-09 35.1 306,573 302,330 862,151
1 week ago 2026-02-04 35.2 307,399 303,156 862,151
1 month ago 2026-01-11 35.6 311,294 307,051 862,151
3 months ago 2025-11-11 36.0 314,815 310,572 862,151
6 months ago 2025-08-11 40.6 354,627 350,384 862,151
1 year ago 2025-02-11 29.5 258,302 254,059 862,151
*

 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 86.4 1,871.79 -0.92 8,799 8,306 9,615 1,239
O C Fisher Water Supply and Flood Control 14.7 1,875.86 -32.14 16,968 16,967 115,742 1,343
O H Ivie Water Supply 46.1 1,531.71 -19.79 255,546 255,546 554,340 - n.a. -
Twin Buttes Water Supply and Flood Control 11.7 1,904.45 -35.75 25,040 21,291 182,454 1,675