San Angelo Area Reservoirs: Monitored Water Supply Reservoirs are 34.0% full on 2026-04-01

Historical Data

Date Percent Full Reservoir Storage
(acre-ft) 		Conservation Storage
(acre-ft) 		Conservation Capacity
(acre-ft)
Today 2026-04-01 34.0 297,789 293,546 862,151
Yesterday 2026-03-31 34.1 298,077 293,834 862,151
2 days ago 2026-03-30 34.1 298,296 294,053 862,151
1 week ago 2026-03-25 34.2 299,513 295,270 862,151
1 month ago 2026-03-01 34.7 303,347 299,104 862,151
3 months ago 2026-01-01 35.9 313,603 309,360 862,151
6 months ago 2025-10-01 37.9 331,189 326,946 862,151
1 year ago 2025-04-01 28.6 250,765 246,522 862,151
*

 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 86.0 1,871.76 -0.95 8,762 8,269 9,615 1,236
O C Fisher Water Supply and Flood Control 14.2 1,875.43 -32.57 16,396 16,395 115,742 1,326
O H Ivie Water Supply 45.1 1,531.19 -20.31 249,731 249,731 554,340 - n.a. -
Twin Buttes Water Supply and Flood Control 10.5 1,903.13 -37.07 22,900 19,151 182,454 1,580