Brownsville Area Reservoirs: Monitored Water Supply Reservoirs are 27.5% full on 2026-02-16

Historical Data

Date Percent Full Reservoir Storage
(acre-ft) 		Conservation Storage
(acre-ft) 		Conservation Capacity
(acre-ft)
Most recent 2026-02-16 27.5 1,033,213 928,218 3,375,775
1 day prior 2026-02-15 27.5 1,034,826 929,680 3,375,775
2 days prior 2026-02-14 27.6 1,035,674 930,438 3,375,775
1 week prior 2026-02-09 27.6 1,035,768 930,426 3,375,775
1 month prior 2026-01-16 27.5 1,042,497 929,423 3,375,775
3 months prior 2025-11-16 26.1 1,048,371 880,642 3,375,775
6 months prior 2025-08-16 25.2 1,064,646 851,814 3,375,775
1 year prior 2025-02-16 21.5 997,124 725,098 3,375,775
*

 Percent Full is based on Conservation Storage and Conservation Capacity and doesn't account for storage in flood pool.

Area Map

recent reservoir storage 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 2026-02-16 Water Supply and Flood Control 33.4 1,051.86 -65.14 683,660 606,270 1,813,408 18,442
Falcon 1as of 2026-02-16 Water Supply and Flood Control 20.6 256.92 -44.28 349,553 321,948 1,562,367 22,901
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.