San Angelo Area Reservoirs: Monitored Water Supply Reservoirs are 36.3% full on 2025-12-12

Historical Data

Date Percent Full Reservoir Storage
(acre-ft) 		Conservation Storage
(acre-ft) 		Conservation Capacity
(acre-ft)
Today 2025-12-12 36.3 317,435 313,192 862,151
Yesterday 2025-12-11 36.3 317,452 313,209 862,151
2 days ago 2025-12-10 36.4 317,814 313,571 862,151
1 week ago 2025-12-05 36.5 318,701 314,458 862,151
1 month ago 2025-11-12 35.9 314,088 309,845 862,151
3 months ago 2025-09-12 38.8 339,022 334,779 862,151
6 months ago 2025-06-12 31.3 273,860 269,617 862,151
1 year ago 2024-12-12 30.1 263,760 259,517 862,151
*

 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)
Nasworthyas of 2025-12-11 Water Supply 87.0 1,871.84 -0.87 8,861 8,368 9,615 1,242
O C Fisher Water Supply and Flood Control 15.3 1,876.36 -31.64 17,661 17,660 115,742 1,391
O H Ivieas of 2025-12-11 Water Supply 47.8 1,532.54 -18.96 265,019 265,019 554,340 - n.a. -
Twin Buttes Water Supply and Flood Control 12.1 1,904.96 -35.24 25,894 22,145 182,454 1,712