San Angelo Area Reservoirs: Monitored Water Supply Reservoirs are 36.5% full on 2025-10-31

Historical Data

Date Percent Full Reservoir Storage
(acre-ft) 		Conservation Storage
(acre-ft) 		Conservation Capacity
(acre-ft)
Today 2025-10-31 36.5 319,218 314,975 862,151
Yesterday 2025-10-30 36.6 319,506 315,263 862,151
2 days ago 2025-10-29 36.7 320,283 316,040 862,151
1 week ago 2025-10-24 36.7 320,891 316,648 862,151
1 month ago 2025-09-30 38.0 331,544 327,301 862,151
3 months ago 2025-07-31 41.4 361,001 356,758 862,151
6 months ago 2025-04-30 31.1 272,392 268,149 862,151
1 year ago 2024-10-31 25.0 219,443 215,200 862,151
*

 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 85.1 1,871.69 -1.02 8,676 8,183 9,615 1,232
O C Fisher Water Supply and Flood Control 15.8 1,876.80 -31.20 18,280 18,279 115,742 1,443
O H Ivie Water Supply 47.9 1,532.59 -18.91 265,595 265,595 554,340 - n.a. -
Twin Buttes Water Supply 12.6 1,905.40 -34.80 26,667 22,918 182,454 1,759