Rio-Grande River Basin Reservoirs: Monitored Water Supply Reservoirs are 27.7% full on 2026-06-14

Historical Data

Date Percent Full Reservoir Storage
(acre-ft) 		Conservation Storage
(acre-ft) 		Conservation Capacity
(acre-ft)
Today 2026-06-14 27.7 1,135,561 976,699 3,520,940
Yesterday 2026-06-13 27.7 1,135,090 976,337 3,520,940
2 days ago 2026-06-12 27.7 1,135,000 976,278 3,520,940
1 week ago 2026-06-07 27.6 1,128,670 971,163 3,520,940
1 month ago 2026-05-14 27.3 1,080,134 959,782 3,520,940
3 months ago 2026-03-14 28.2 1,077,556 992,835 3,520,940
6 months ago 2025-12-14 27.4 1,127,836 965,895 3,520,940
1 year ago 2025-06-14 24.0 1,021,966 846,590 3,520,940
*

 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 1 Water Supply and Flood Control 29.4 1,047.38 -69.62 605,614 533,445 1,813,408 16,360
Falcon 1 Water Supply and Flood Control 23.6 261.09 -40.11 455,691 368,998 1,562,367 28,046
Red Bluff Water Supply 51.2 2,816.42 -11.68 74,256 74,256 145,165 4,864
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.