South Climate Division Reservoirs: Monitored Water Supply Reservoirs are 14.4% full on 2025-09-01

Historical Data

Date Percent Full Reservoir Storage
(acre-ft)
Conservation Storage
(acre-ft)
Conservation Capacity
(acre-ft)
Today 2025-09-01 14.4 408,905 358,323 2,481,249
Yesterday 2025-08-31 14.5 409,689 359,006 2,481,249
2 days ago 2025-08-30 14.5 410,834 360,013 2,481,249
1 week ago 2025-08-25 14.7 416,953 365,473 2,481,249
1 month ago 2025-08-01 15.8 459,927 391,831 2,481,249
3 months ago 2025-06-01 15.1 431,887 373,582 2,481,249
6 months ago 2025-03-01 16.6 489,762 412,715 2,481,249
1 year ago 2024-09-01 16.3 495,969 404,465 2,481,249
*

 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)
Choke Canyon Water Supply 11.9 183.47 -37.03 79,091 79,090 662,820 7,152
Corpus Christi Water Supply 17.3 78.63 -15.37 44,537 44,259 256,062 7,166
Falcon 1 Water Supply 15.0 253.90 -47.30 285,277 234,974 1,562,367 19,759
footnotes
1

Lake Falcon straddles the border of Texas and Mexico. By treaty, Texas has rights 58.6% of the total conservation capacity. The fraction of the actual storage that belongs to Texas is formally determined biweekly by the International Boundary Water Commission (IBWC). The IBWC is the legal repository of data related to this lake for treaty purposes and official versions of the datasets should be obtained directly from them. Conservation capacity is based on 58.6% of total conservation capacity. Conservation storage is based on the bi-weekly changing Texas share.