Edwards-Plateau Climate Division Reservoirs: Monitored Water Supply Reservoirs are 38.7% full on 2025-07-05

Historical Data

Date Percent Full Reservoir Storage
(acre-ft)
Conservation Storage
(acre-ft)
Conservation Capacity
(acre-ft)
Today 2025-07-05 38.7 1,807,089 1,647,170 4,261,647
Yesterday 2025-07-04 37.3 1,745,498 1,587,965 4,261,647
2 days ago 2025-07-03 36.3 1,705,382 1,548,715 4,261,647
1 week ago 2025-06-28 36.1 1,699,791 1,538,727 4,261,647
1 month ago 2025-06-05 35.3 1,651,812 1,502,511 4,261,647
3 months ago 2025-04-05 33.6 1,665,028 1,431,035 4,261,647
6 months ago 2025-01-05 35.4 1,738,015 1,507,664 4,261,647
1 year ago 2024-07-05 35.0 1,678,808 1,475,798 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 30.4 1,051.16 -65.84 670,891 551,712 1,813,408 18,099
Brady Creek Water Supply 67.2 1,737.70 -5.30 20,978 19,356 28,808 1,576
Buchanan Water Supply 60.1 1,002.74 -17.26 534,613 520,951 866,694 16,906
E V Spence Water Supply 15.3 1,850.14 -47.86 79,119 79,119 517,272 4,467
Inks Water Supply 98.4 887.72 -0.28 13,788 13,505 13,729 798
Lyndon B Johnson Water Supply 94.9 824.10 -0.90 125,868 107,028 112,778 6,342
Marble Falls Water Supply 100.0 740.02 3.02 9,537 7,597 7,597 667
Nasworthy Water Supply 90.3 1,872.09 -0.62 9,175 8,682 9,615 1,261
O C Fisher Water Supply and Flood Control 19.2 1,879.24 -28.76 22,186 22,185 115,742 1,785
O H Ivie Water Supply 50.7 1,533.92 -17.58 281,285 281,285 554,340 - n.a. -
Oak Creek Water Supply 25.5 1,980.65 -19.35 10,146 9,996 39,210 822
Twin Buttes Water Supply 14.1 1,906.95 -33.25 29,503 25,754 182,454 1,931
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.