Rio-Grande River Basin Reservoirs: Monitored Water Supply Reservoirs are 22.9% full on 2025-05-25

Historical Data

Date Percent Full Reservoir Storage
(acre-ft)
Conservation Storage
(acre-ft)
Conservation Capacity
(acre-ft)
Today 2025-05-25 22.9 983,661 807,241 3,520,940
Yesterday 2025-05-24 23.0 984,926 808,250 3,520,940
2 days ago 2025-05-23 23.0 987,951 810,637 3,520,940
1 week ago 2025-05-18 23.2 997,313 818,095 3,520,940
1 month ago 2025-04-25 21.4 1,021,158 755,143 3,520,940
3 months ago 2025-02-25 22.2 1,052,672 780,460 3,520,940
6 months ago 2024-11-25 21.0 1,048,118 739,833 3,520,940
1 year ago 2024-05-25 19.9 948,886 701,611 3,520,940
*

 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 28.3 1,048.55 -68.45 625,167 512,364 1,813,408 16,878
Falcon 1 Water Supply 14.7 254.31 -46.89 293,211 229,594 1,562,367 20,125
Red Bluff Water Supply 45.0 2,814.50 -13.60 65,283 65,283 145,165 4,478
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.