Brownsville Area Reservoirs: Monitored Water Supply Reservoirs are 25.0% full on 2025-07-26

Historical Data

Date Percent Full Reservoir Storage
(acre-ft)
Conservation Storage
(acre-ft)
Conservation Capacity
(acre-ft)
Today 2025-07-26 25.0 1,090,879 845,207 3,375,775
Yesterday 2025-07-25 25.0 1,089,281 843,983 3,375,775
2 days ago 2025-07-24 24.9 1,086,384 841,753 3,375,775
1 week ago 2025-07-19 25.0 1,079,567 842,399 3,375,775
1 month ago 2025-06-26 22.7 957,193 765,196 3,375,775
3 months ago 2025-04-26 20.5 957,678 693,138 3,375,775
6 months ago 2025-01-26 21.2 1,025,169 715,564 3,375,775
1 year ago 2024-07-26 19.5 944,761 659,681 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 1 Water Supply and Flood Control 32.5 1,056.06 -60.94 765,097 588,623 1,813,408 20,508
Falcon 1 Water Supply 16.4 255.88 -45.32 326,140 256,860 1,562,367 21,757
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.