Brownsville Area Reservoirs: Monitored Water Supply Reservoirs are 23.5% full on 2025-07-05

Historical Data

Date Percent Full Reservoir Storage
(acre-ft)
Conservation Storage
(acre-ft)
Conservation Capacity
(acre-ft)
Today 2025-07-05 23.5 979,991 791,853 3,375,775
Yesterday 2025-07-04 23.4 976,138 788,700 3,375,775
2 days ago 2025-07-03 23.2 970,602 784,178 3,375,775
1 week ago 2025-06-28 22.6 955,306 763,745 3,375,775
1 month ago 2025-06-05 22.3 922,368 754,179 3,375,775
3 months ago 2025-04-05 21.4 1,013,991 723,922 3,375,775
6 months ago 2025-01-05 20.8 1,020,473 700,874 3,375,775
1 year ago 2024-07-05 19.1 920,420 644,895 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 30.5 1,051.22 -65.78 671,900 552,541 1,813,408 18,126
Falcon 1 Water Supply 15.3 255.02 -46.18 308,091 239,312 1,562,367 20,862
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.