San Angelo Area Reservoirs: Monitored Water Supply Reservoirs are 35.3% full on 2026-01-30

Historical Data

Date Percent Full Reservoir Storage
(acre-ft) 		Conservation Storage
(acre-ft) 		Conservation Capacity
(acre-ft)
Today 2026-01-30 35.3 308,231 303,988 862,151
Yesterday 2026-01-29 35.3 308,356 304,113 862,151
2 days ago 2026-01-28 35.3 308,442 304,199 862,151
1 week ago 2026-01-23 35.3 308,840 304,597 862,151
1 month ago 2025-12-30 35.9 313,859 309,616 862,151
3 months ago 2025-10-30 36.5 319,224 314,981 862,151
6 months ago 2025-07-30 41.5 361,739 357,496 862,151
1 year ago 2025-01-30 29.5 258,885 254,642 862,151
*

 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 86.1 1,871.77 -0.94 8,775 8,282 9,615 1,237
O C Fisher Water Supply and Flood Control 14.7 1,875.92 -32.08 17,048 17,047 115,742 1,345
O H Ivie Water Supply 46.4 1,531.87 -19.63 257,334 257,334 554,340 - n.a. -
Twin Buttes Water Supply and Flood Control 11.7 1,904.47 -35.73 25,074 21,325 182,454 1,677