South-Central-Texas Planning Region Reservoirs: Monitored Water Supply Reservoirs are 70.7% full on 2026-09-21

Historical Data

Date Percent Full Reservoir Storage
(acre-ft)
Conservation Storage
(acre-ft)
Conservation Capacity
(acre-ft)
Today 2026-09-21 70.7 469,657 469,586 664,644
Yesterday 2026-09-20 70.7 470,150 470,079 664,644
2 days ago 2026-09-19 70.8 470,678 470,607 664,644
1 week ago 2026-09-14 71.2 473,263 473,192 664,644
1 month ago 2026-08-21 72.1 483,637 479,184 664,644
3 months ago 2026-06-21 42.3 280,941 280,870 664,644
6 months ago 2026-03-21 39.0 259,091 259,020 664,644
1 year ago 2025-09-21 44.5 296,076 296,005 664,644
*

 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)
Canyon Water Supply and Flood Control 98.6 908.33 -0.67 373,360 373,289 378,781 8,159
Coleto Creek Water Supply 72.4 94.32 -3.68 22,488 22,488 31,040 2,131
Medina Water Supply 29.0 1,020.96 -43.24 73,809 73,809 254,823 2,473