San Angelo Area Reservoirs: Monitored Water Supply Reservoirs are 34.0% full on 2026-07-30

Historical Data

Date Percent Full Reservoir Storage
(acre-ft) 		Conservation Storage
(acre-ft) 		Conservation Capacity
(acre-ft)
Today 2026-07-30 34.0 297,456 293,213 862,151
Yesterday 2026-07-29 34.1 297,870 293,627 862,151
2 days ago 2026-07-28 34.1 298,335 294,092 862,151
1 week ago 2026-07-23 34.4 301,240 296,997 862,151
1 month ago 2026-06-30 35.2 307,436 303,193 862,151
3 months ago 2026-04-30 35.2 307,959 303,716 862,151
6 months ago 2026-01-30 35.3 308,186 303,943 862,151
1 year ago 2025-07-30 41.5 361,739 357,496 862,151
*

 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 85.6 1,871.73 -0.98 8,726 8,233 9,615 1,234
O C Fisher Water Supply and Flood Control 12.6 1,874.01 -33.99 14,570 14,569 115,742 1,228
O H Ivie Water Supply 46.2 1,531.78 -19.72 256,328 256,328 554,340 - n.a. -
Twin Buttes Water Supply and Flood Control 7.7 1,899.62 -40.58 17,832 14,083 182,454 1,332