San Angelo Area Reservoirs: Monitored Water Supply Reservoirs are 35.9% full on 2025-11-18

Historical Data

Date Percent Full Reservoir Storage
(acre-ft) 		Conservation Storage
(acre-ft) 		Conservation Capacity
(acre-ft)
Today 2025-11-18 35.9 313,567 309,324 862,151
Yesterday 2025-11-17 35.9 313,800 309,557 862,151
2 days ago 2025-11-16 35.9 314,062 309,819 862,151
1 week ago 2025-11-11 36.0 314,892 310,649 862,151
1 month ago 2025-10-18 37.1 323,674 319,431 862,151
3 months ago 2025-08-18 40.2 350,603 346,360 862,151
6 months ago 2025-05-18 31.3 274,083 269,840 862,151
1 year ago 2024-11-18 30.6 267,860 263,617 862,151
*

 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 86.1 1,871.77 -0.94 8,775 8,282 9,615 1,237
O C Fisher Water Supply and Flood Control 15.4 1,876.45 -31.55 17,787 17,786 115,742 1,402
O H Ivie Water Supply 47.1 1,532.21 -19.29 261,211 261,211 554,340 - n.a. -
Twin Buttes Water Supply 12.1 1,904.90 -35.30 25,794 22,045 182,454 1,708