San Angelo Area Reservoirs: Monitored Water Supply Reservoirs are 35.3% full on 2026-01-22

Historical Data

Date Percent Full Reservoir Storage
(acre-ft) 		Conservation Storage
(acre-ft) 		Conservation Capacity
(acre-ft)
Today 2026-01-22 35.3 308,955 304,712 862,151
Yesterday 2026-01-21 35.4 309,110 304,867 862,151
2 days ago 2026-01-20 35.4 309,214 304,971 862,151
1 week ago 2026-01-15 35.5 310,653 306,410 862,151
1 month ago 2025-12-22 36.1 315,330 311,087 862,151
3 months ago 2025-10-22 36.8 321,486 317,243 862,151
6 months ago 2025-07-22 41.9 365,725 361,482 862,151
1 year ago 2025-01-22 29.4 258,065 253,822 862,151
*

 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 14.8 1,875.95 -32.05 17,088 17,087 115,742 1,346
O H Ivie Water Supply 46.5 1,531.93 -19.57 258,005 258,005 554,340 - n.a. -
Twin Buttes Water Supply and Flood Control 11.7 1,904.50 -35.70 25,124 21,375 182,454 1,679