Rio-Grande River Basin Reservoirs: Monitored Water Supply Reservoirs are 21.4% full on 2025-05-05

Historical Data

Date Percent Full Reservoir Storage
(acre-ft)
Conservation Storage
(acre-ft)
Conservation Capacity
(acre-ft)
Today 2025-05-05 21.4 995,859 751,744 3,520,940
Yesterday 2025-05-04 21.4 996,911 752,460 3,520,940
2 days ago 2025-05-03 21.4 999,545 754,435 3,520,940
1 week ago 2025-04-28 21.7 1,011,116 763,088 3,520,940
1 month ago 2025-04-05 22.2 1,072,486 782,417 3,520,940
3 months ago 2025-02-05 21.9 1,072,886 771,049 3,520,940
6 months ago 2024-11-05 21.2 1,046,772 746,133 3,520,940
1 year ago 2024-05-05 20.6 1,103,507 726,749 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 25.5 1,048.79 -68.21 629,259 461,766 1,813,408 16,986
Falcon 1 Water Supply 14.5 254.80 -46.40 303,440 226,818 1,562,367 20,632
Red Bluff Water Supply 43.5 2,814.02 -14.08 63,160 63,160 145,165 4,381
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.