Sulphur River Basin Reservoirs: Monitored Water Supply Reservoirs are 90.6% full on 2026-07-27

Historical Data

Date Percent Full Reservoir Storage
(acre-ft)
Conservation Storage
(acre-ft)
Conservation Capacity
(acre-ft)
Today 2026-07-27 90.6 570,409 361,529 399,063
Yesterday 2026-07-26 90.7 571,942 362,032 399,063
2 days ago 2026-07-25 90.9 574,002 362,703 399,063
1 week ago 2026-07-20 91.6 588,909 365,567 399,063
1 month ago 2026-06-27 93.5 749,862 372,965 399,063
3 months ago 2026-04-27 86.9 447,648 346,742 399,063
6 months ago 2026-01-27 79.4 424,606 316,871 399,063
1 year ago 2025-07-27 98.7 591,015 393,976 399,063
*

 Percent Full is based on Conservation Storage and Conservation Capacity and doesn't account for storage in flood pool.

Area 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)
Jim Chapman Water Supply and Flood Control 85.5 437.84 -2.16 256,964 221,189 258,723 16,755
Sulphur Springs Water Supply 100.0 458.97 0.02 17,783 17,747 17,747 - n.a. -
Wright Patman Water Supply and Flood Control 100.0 227.06 6.46 295,662 122,593 122,593 - n.a. -