San Angelo Area Reservoirs: Monitored Water Supply Reservoirs are 34.5% full on 2026-03-16

Historical Data

Date Percent Full Reservoir Storage
(acre-ft) 		Conservation Storage
(acre-ft) 		Conservation Capacity
(acre-ft)
Today 2026-03-16 34.5 301,738 297,495 862,151
Yesterday 2026-03-15 34.6 302,389 298,146 862,151
2 days ago 2026-03-14 34.6 302,553 298,310 862,151
1 week ago 2026-03-09 34.6 302,888 298,645 862,151
1 month ago 2026-02-16 35.0 306,353 302,110 862,151
3 months ago 2025-12-16 36.2 316,483 312,240 862,151
6 months ago 2025-09-16 38.6 336,849 332,606 862,151
1 year ago 2025-03-16 29.0 254,182 249,939 862,151
*

 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 84.7 1,871.66 -1.05 8,640 8,147 9,615 1,230
O C Fisher Water Supply and Flood Control 14.4 1,875.67 -32.33 16,715 16,714 115,742 1,335
O H Ivie Water Supply 45.5 1,531.40 -20.10 252,079 252,079 554,340 - n.a. -
Twin Buttes Water Supply and Flood Control 11.3 1,904.01 -36.19 24,304 20,555 182,454 1,644