San Angelo Area Reservoirs: Monitored Water Supply Reservoirs are 29.5% full on 2026-11-11

Historical Data

Date Percent Full Reservoir Storage
(acre-ft) 		Conservation Storage
(acre-ft) 		Conservation Capacity
(acre-ft)
Today 2026-11-11 29.5 258,917 254,674 862,151
Yesterday 2026-11-10 29.5 258,803 254,560 862,151
2 days ago 2026-11-09 29.5 258,677 254,434 862,151
1 week ago 2026-11-04 29.4 258,117 253,874 862,151
1 month ago 2026-10-11 29.8 261,460 257,217 862,151
3 months ago 2026-08-11 33.2 290,633 286,390 862,151
6 months ago 2026-05-11 35.1 306,832 302,589 862,151
1 year ago 2025-11-11 36.0 314,815 310,572 862,151
*

 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 87.9 1,871.91 -0.80 8,949 8,456 9,615 1,247
O C Fisher Water Supply and Flood Control 10.6 1,872.02 -35.98 12,251 12,250 115,742 1,070
O H Ivie Water Supply 40.8 1,529.00 -22.50 226,258 226,258 554,340 - n.a. -
Twin Buttes Water Supply and Flood Control 4.2 1,894.13 -46.07 11,459 7,710 182,454 1,017