Brownsville Area Reservoirs: Monitored Water Supply Reservoirs are 26.8% full on 2025-10-28

Historical Data

Date Percent Full Reservoir Storage
(acre-ft)
Conservation Storage
(acre-ft)
Conservation Capacity
(acre-ft)
Most recent 2025-10-28 26.8 1,081,331 904,546 3,375,775
1 day prior 2025-10-27 26.8 1,082,435 905,539 3,375,775
2 days prior 2025-10-26 26.9 1,083,826 906,795 3,375,775
1 week prior 2025-10-21 26.9 1,083,578 907,007 3,375,775
1 month prior 2025-09-28 27.0 1,102,903 911,295 3,375,775
3 months prior 2025-07-28 26.0 1,093,910 877,132 3,375,775
6 months prior 2025-04-28 20.7 948,132 700,104 3,375,775
1 year prior 2024-10-28 20.6 995,028 695,334 3,375,775
*

 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)
Amistad 1as of 2025-10-28 Water Supply and Flood Control 36.3 1,057.74 -59.26 800,721 657,732 1,813,408 21,389
Falcon 1as of 2025-10-28 Water Supply 15.8 253.66 -47.54 280,610 246,814 1,562,367 19,546
footnotes
1

Lake Amistad and Lake Falcon straddle the border of Texas and Mexico. By treaty, Texas has rights to 56.2% of the total conservation capacity of Amistad and 58.6% of the total conservation capacity of Falcon. 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 the fixed percent of total conservation capacity. Conservation storage is based on the bi-weekly changing Texas share.