Edwards-Plateau Climate Division Reservoirs: Monitored Water Supply Reservoirs are 47.7% full on 2025-10-07

Historical Data

Date Percent Full Reservoir Storage
(acre-ft)
Conservation Storage
(acre-ft)
Conservation Capacity
(acre-ft)
Today 2025-10-07 47.7 2,216,071 2,032,465 4,261,647
Yesterday 2025-10-06 47.7 2,216,660 2,033,106 4,261,647
2 days ago 2025-10-05 47.7 2,217,736 2,034,233 4,261,647
1 week ago 2025-09-30 47.9 2,224,856 2,041,469 4,261,647
1 month ago 2025-09-07 48.4 2,244,530 2,062,196 4,261,647
3 months ago 2025-07-07 43.2 2,010,031 1,838,966 4,261,647
6 months ago 2025-04-07 33.5 1,661,014 1,426,712 4,261,647
1 year ago 2024-10-07 36.2 1,749,875 1,524,924 4,217,160
*

 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 35.9 1,057.52 -59.48 795,886 651,080 1,813,408 21,270
Brady Creek Water Supply 91.2 1,741.65 -1.35 27,881 26,259 28,808 1,909
Buchanan Water Supply 95.3 1,018.16 -1.84 839,400 825,738 866,694 22,085
E V Spence Water Supply 13.5 1,848.01 -49.99 69,918 69,918 517,272 4,064
Inks Water Supply 62.9 880.60 -7.40 8,914 8,631 13,729 576
Lyndon B Johnson Water Supply 98.3 824.70 -0.30 129,693 110,853 112,778 6,404
Marble Falls Water Supply 94.7 736.34 -0.66 7,197 7,197 7,597 600
Nasworthy Water Supply 85.2 1,871.70 -1.01 8,689 8,196 9,615 1,232
O C Fisher Water Supply and Flood Control 16.1 1,877.02 -30.98 18,591 18,590 115,742 1,469
O H Ivie Water Supply 49.3 1,533.23 -18.27 273,066 273,066 554,340 - n.a. -
Oak Creek Water Supply 21.7 1,978.60 -21.40 8,660 8,510 39,210 729
Twin Buttes Water Supply 13.4 1,906.24 -33.96 28,176 24,427 182,454 1,853
footnotes
1

Lake Amistad straddles the border of Texas and Mexico. By treaty, Texas has rights 56.2% of the total conservation capacity. 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 56.2% of total conservation capacity. Conservation storage is based on the bi-weekly changing Texas fraction.