Edwards-Plateau Climate Division Reservoirs: Monitored Water Supply Reservoirs are 36.1% full on 2025-06-30

Historical Data

Date Percent Full Reservoir Storage
(acre-ft)
Conservation Storage
(acre-ft)
Conservation Capacity
(acre-ft)
Today 2025-06-30 36.1 1,699,039 1,537,482 4,261,647
Yesterday 2025-06-29 36.1 1,698,921 1,537,594 4,261,647
2 days ago 2025-06-28 36.1 1,699,791 1,538,727 4,261,647
1 week ago 2025-06-23 36.4 1,711,830 1,550,664 4,261,647
1 month ago 2025-05-30 34.7 1,631,703 1,478,373 4,261,647
3 months ago 2025-03-30 33.7 1,667,950 1,434,071 4,261,647
6 months ago 2024-12-30 35.5 1,742,128 1,512,394 4,261,647
1 year ago 2024-06-30 35.3 1,691,455 1,488,330 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 29.2 1,050.18 -66.82 652,878 530,121 1,813,408 17,615
Brady Creek Water Supply 30.0 1,727.83 -15.17 10,261 8,639 28,808 850
Buchanan Water Supply 60.0 1,002.67 -17.33 533,431 519,769 866,694 16,874
E V Spence Water Supply 14.8 1,849.54 -48.46 76,459 76,459 517,272 4,399
Inks Water Supply 96.2 887.34 -0.66 13,486 13,203 13,729 792
Lyndon B Johnson Water Supply 98.7 824.77 -0.23 130,141 111,301 112,778 6,410
Marble Falls Water Supply 94.8 736.35 -0.65 7,203 7,203 7,597 601
Nasworthy Water Supply 85.8 1,871.74 -0.97 8,738 8,245 9,615 1,235
O C Fisher Water Supply and Flood Control 9.0 1,870.21 -37.79 10,447 10,446 115,742 912
O H Ivie Water Supply 39.3 1,528.15 -23.35 217,615 217,615 554,340 - n.a. -
Oak Creek Water Supply 25.3 1,980.54 -19.46 10,073 9,923 39,210 816
Twin Buttes Water Supply 13.5 1,906.31 -33.89 28,307 24,558 182,454 1,860
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.