San Angelo Area Reservoirs: Monitored Water Supply Reservoirs are 35.4% full on 2026-01-19

Historical Data

Date Percent Full Reservoir Storage
(acre-ft) 		Conservation Storage
(acre-ft) 		Conservation Capacity
(acre-ft)
Today 2026-01-19 35.4 309,744 305,501 862,151
Yesterday 2026-01-18 35.4 309,775 305,532 862,151
2 days ago 2026-01-17 35.5 309,888 305,645 862,151
1 week ago 2026-01-12 35.6 311,032 306,789 862,151
1 month ago 2025-12-19 36.1 315,894 311,651 862,151
3 months ago 2025-10-19 37.0 323,201 318,958 862,151
6 months ago 2025-07-19 42.1 367,013 362,770 862,151
1 year ago 2025-01-19 29.5 258,583 254,340 862,151
*

 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)
Nasworthyas of 2026-01-18 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 14.8 1,875.98 -32.02 17,127 17,126 115,742 1,347
O H Ivieas of 2026-01-18 Water Supply 46.7 1,531.99 -19.51 258,676 258,676 554,340 - n.a. -
Twin Buttes Water Supply and Flood Control 11.8 1,904.54 -35.66 25,191 21,442 182,454 1,682