San Angelo Area Reservoirs: Monitored Water Supply Reservoirs are 29.4% full on 2026-11-04

Historical Data

Date Percent Full Reservoir Storage
(acre-ft) 		Conservation Storage
(acre-ft) 		Conservation Capacity
(acre-ft)
Today 2026-11-04 29.4 258,128 253,885 862,151
Yesterday 2026-11-03 29.5 258,466 254,223 862,151
2 days ago 2026-11-02 29.5 258,347 254,104 862,151
1 week ago 2026-10-28 29.5 258,308 254,065 862,151
1 month ago 2026-10-04 30.2 264,275 260,032 862,151
3 months ago 2026-08-04 33.7 294,788 290,545 862,151
6 months ago 2026-05-04 35.1 307,150 302,907 862,151
1 year ago 2025-11-04 36.3 317,398 313,155 862,151
*

 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 86.0 1,871.76 -0.95 8,762 8,269 9,615 1,236
O C Fisher Water Supply and Flood Control 10.5 1,871.93 -36.07 12,157 12,156 115,742 1,063
O H Ivie Water Supply 40.7 1,528.95 -22.55 225,750 225,750 554,340 - n.a. -
Twin Buttes Water Supply and Flood Control 4.2 1,894.13 -46.07 11,459 7,710 182,454 1,017