San Angelo Area Reservoirs: Monitored Water Supply Reservoirs are 36.0% full on 2026-06-12

Historical Data

Date Percent Full Reservoir Storage
(acre-ft) 		Conservation Storage
(acre-ft) 		Conservation Capacity
(acre-ft)
Today 2026-06-12 36.0 314,273 310,030 862,151
Yesterday 2026-06-11 36.0 314,605 310,362 862,151
2 days ago 2026-06-10 36.1 315,066 310,823 862,151
1 week ago 2026-06-05 35.8 313,318 309,075 862,151
1 month ago 2026-05-12 35.1 306,670 302,427 862,151
3 months ago 2026-03-12 34.7 303,207 298,964 862,151
6 months ago 2025-12-12 36.3 317,395 313,152 862,151
1 year ago 2025-06-12 31.3 273,860 269,617 862,151
*

 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 13.7 1,875.05 -32.95 15,891 15,890 115,742 1,312
O H Ivie Water Supply 48.5 1,532.86 -18.64 268,711 268,711 554,340 - n.a. -
Twin Buttes Water Supply and Flood Control 9.4 1,901.86 -38.34 20,970 17,221 182,454 1,489