San Angelo Area Reservoirs: Monitored Water Supply Reservoirs are 38.7% full on 2025-09-16

Historical Data

Date Percent Full Reservoir Storage
(acre-ft) 		Conservation Storage
(acre-ft) 		Conservation Capacity
(acre-ft)
Today 2025-09-16 38.7 337,470 333,227 862,151
Yesterday 2025-09-15 38.7 337,671 333,428 862,151
2 days ago 2025-09-14 38.7 338,160 333,917 862,151
1 week ago 2025-09-09 39.1 341,006 336,763 862,151
1 month ago 2025-08-16 40.3 351,665 347,422 862,151
3 months ago 2025-06-16 31.2 272,934 268,691 862,151
6 months ago 2025-03-16 29.0 254,182 249,939 862,151
1 year ago 2024-09-16 26.7 234,064 229,821 862,151
*

 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 16.5 1,877.38 -30.62 19,139 19,138 115,742 1,508
O H Ivie Water Supply 50.5 1,533.82 -17.68 280,094 280,094 554,340 - n.a. -
Twin Buttes Water Supply 14.2 1,907.00 -33.20 29,597 25,848 182,454 1,937