San Angelo Area Reservoirs: Monitored Water Supply Reservoirs are 35.9% full on 2026-06-15

Historical Data

Date Percent Full Reservoir Storage
(acre-ft) 		Conservation Storage
(acre-ft) 		Conservation Capacity
(acre-ft)
Today 2026-06-15 35.9 313,416 309,173 862,151
Yesterday 2026-06-14 35.9 313,393 309,150 862,151
2 days ago 2026-06-13 35.9 313,697 309,454 862,151
1 week ago 2026-06-08 36.1 315,644 311,401 862,151
1 month ago 2026-05-15 35.0 305,848 301,605 862,151
3 months ago 2026-03-15 34.6 302,436 298,193 862,151
6 months ago 2025-12-15 36.2 316,573 312,330 862,151
1 year ago 2025-06-15 31.2 273,184 268,941 862,151
*

 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 13.7 1,875.05 -32.95 15,891 15,890 115,742 1,312
O H Ivie Water Supply 48.3 1,532.80 -18.70 268,018 268,018 554,340 - n.a. -
Twin Buttes Water Supply and Flood Control 9.3 1,901.73 -38.47 20,781 17,032 182,454 1,480