San Angelo Area Reservoirs: Monitored Water Supply Reservoirs are 35.3% full on 2026-04-18

Historical Data

Date Percent Full Reservoir Storage
(acre-ft) 		Conservation Storage
(acre-ft) 		Conservation Capacity
(acre-ft)
Most recent 2026-04-18 35.3 308,992 304,749 862,151
1 day prior 2026-04-17 35.3 308,498 304,255 862,151
2 days prior 2026-04-16 35.3 308,383 304,140 862,151
1 week prior 2026-04-11 33.9 296,814 292,571 862,151
1 month prior 2026-03-18 34.4 300,883 296,640 862,151
3 months prior 2026-01-18 35.4 309,830 305,587 862,151
6 months prior 2025-10-18 37.1 323,680 319,437 862,151
1 year prior 2025-04-18 28.3 248,364 244,121 862,151
*

 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 2026-04-18 Water Supply 86.9 1,871.83 -0.88 8,849 8,356 9,615 1,241
O C Fisheras of 2026-04-18 Water Supply and Flood Control 14.3 1,875.52 -32.48 16,516 16,515 115,742 1,330
O H Ivieas of 2026-04-18 Water Supply 47.1 1,532.19 -19.31 260,980 260,980 554,340 - n.a. -
Twin Buttesas of 2026-04-18 Water Supply and Flood Control 10.4 1,902.97 -37.23 22,647 18,898 182,454 1,569