San Angelo Area Reservoirs: Monitored Water Supply Reservoirs are 32.9% full on 2026-08-16

Historical Data

Date Percent Full Reservoir Storage
(acre-ft) 		Conservation Storage
(acre-ft) 		Conservation Capacity
(acre-ft)
Today 2026-08-16 32.9 287,479 283,236 862,151
Yesterday 2026-08-15 32.9 288,027 283,784 862,151
2 days ago 2026-08-14 33.0 288,622 284,379 862,151
1 week ago 2026-08-09 33.4 291,900 287,657 862,151
1 month ago 2026-07-16 34.3 299,663 295,420 862,151
3 months ago 2026-05-16 34.9 305,427 301,184 862,151
6 months ago 2026-02-16 35.0 306,369 302,126 862,151
1 year ago 2025-08-16 40.3 351,665 347,422 862,151
*

 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 85.4 1,871.71 -1.00 8,701 8,208 9,615 1,233
O C Fisher Water Supply and Flood Control 12.0 1,873.49 -34.51 13,943 13,942 115,742 1,203
O H Ivie Water Supply 44.8 1,531.08 -20.42 248,501 248,501 554,340 - n.a. -
Twin Buttes Water Supply and Flood Control 6.9 1,898.46 -41.74 16,334 12,585 182,454 1,261