San Angelo Area Reservoirs: Monitored Water Supply Reservoirs are 34.7% full on 2026-03-13

Historical Data

Date Percent Full Reservoir Storage
(acre-ft) 		Conservation Storage
(acre-ft) 		Conservation Capacity
(acre-ft)
Today 2026-03-13 34.7 303,127 298,884 862,151
Yesterday 2026-03-12 34.7 303,173 298,930 862,151
2 days ago 2026-03-11 34.7 303,636 299,393 862,151
1 week ago 2026-03-06 34.6 302,537 298,294 862,151
1 month ago 2026-02-13 35.0 305,904 301,661 862,151
3 months ago 2025-12-13 36.3 317,250 313,007 862,151
6 months ago 2025-09-13 38.8 338,404 334,161 862,151
1 year ago 2025-03-13 29.1 255,020 250,777 862,151
*

 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 85.5 1,871.72 -0.99 8,713 8,220 9,615 1,234
O C Fisher Water Supply and Flood Control 14.5 1,875.76 -32.24 16,835 16,834 115,742 1,339
O H Ivie Water Supply 45.6 1,531.46 -20.04 252,750 252,750 554,340 - n.a. -
Twin Buttes Water Supply and Flood Control 11.4 1,904.19 -36.01 24,605 20,856 182,454 1,657