Edwards-Plateau Climate Division Reservoirs: Monitored Water Supply Reservoirs are 39.0% 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 39.0 1,822,474 1,663,309 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 30.5 1,051.22 -65.78 671,900 552,541 1,813,408 18,126
Brady Creek Water Supply 68.4 1,737.89 -5.11 21,333 19,711 28,808 1,591
Buchanan Water Supply 60.7 1,003.06 -16.94 540,046 526,384 866,694 17,047
E V Spence Water Supply 15.3 1,850.15 -47.85 79,164 79,164 517,272 4,468
Inks Water Supply 100.0 888.64 0.64 14,533 13,729 13,729 818
Lyndon B Johnson Water Supply 96.4 824.36 -0.64 127,521 108,681 112,778 6,371
Marble Falls Water Supply 100.0 737.78 0.78 8,082 7,597 7,597 629
Nasworthy Water Supply 89.6 1,872.04 -0.67 9,112 8,619 9,615 1,257
O C Fisher Water Supply and Flood Control 19.2 1,879.27 -28.73 22,241 22,240 115,742 1,788
O H Ivie Water Supply 52.1 1,534.54 -16.96 288,874 288,874 554,340 - 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 1,906.96 -33.24 29,522 25,773 182,454 1,933
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.