Rio-Grande River Basin Reservoirs: Monitored Water Supply Reservoirs are 26.0% full on 2025-07-25

Historical Data

Date Percent Full Reservoir Storage
(acre-ft)
Conservation Storage
(acre-ft)
Conservation Capacity
(acre-ft)
Today 2025-07-25 26.0 1,161,552 916,453 3,520,940
Yesterday 2025-07-24 26.0 1,159,288 914,657 3,520,940
2 days ago 2025-07-23 25.9 1,157,525 913,296 3,520,940
1 week ago 2025-07-18 25.8 1,145,794 910,017 3,520,940
1 month ago 2025-06-25 23.7 1,025,808 833,633 3,520,940
3 months ago 2025-04-25 21.4 1,021,158 755,143 3,520,940
6 months ago 2025-01-25 21.8 1,082,376 769,153 3,520,940
1 year ago 2024-07-25 20.2 996,063 710,529 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 32.3 1,055.91 -61.09 762,150 586,356 1,813,408 20,436
Falcon 1 Water Supply 16.4 255.89 -45.31 326,256 256,951 1,562,367 21,763
Red Bluff Water Supply 50.4 2,816.19 -11.91 73,146 73,146 145,165 4,818
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.