San Angelo Area Reservoirs: Monitored Water Supply Reservoirs are 39.4% full on 2025-08-31

Historical Data

Date Percent Full Reservoir Storage
(acre-ft) 		Conservation Storage
(acre-ft) 		Conservation Capacity
(acre-ft)
Today 2025-08-31 39.4 344,281 340,038 862,151
Yesterday 2025-08-30 39.5 344,569 340,326 862,151
2 days ago 2025-08-29 39.5 345,060 340,817 862,151
1 week ago 2025-08-24 39.8 347,797 343,554 862,151
1 month ago 2025-07-31 41.4 361,001 356,758 862,151
3 months ago 2025-05-31 31.2 273,504 269,261 862,151
6 months ago 2025-02-28 29.3 256,479 252,236 862,151
1 year ago 2024-08-31 19.1 168,819 164,576 862,151
*

 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 84.9 1,871.67 -1.04 8,652 8,159 9,615 1,230
O C Fisher Water Supply and Flood Control 17.0 1,877.77 -30.23 19,733 19,732 115,742 1,551
O H Ivie Water Supply 51.5 1,534.25 -17.25 285,310 285,310 554,340 - n.a. -
Twin Buttes Water Supply 14.7 1,907.50 -32.70 30,586 26,837 182,454 1,992