Edwards-Plateau Climate Division Reservoirs: Monitored Water Supply Reservoirs are 50.2% full on 2026-10-23

Historical Data

Date Percent Full Reservoir Storage
(acre-ft) 		Conservation Storage
(acre-ft) 		Conservation Capacity
(acre-ft)
Today 2026-10-23 50.2 2,247,361 2,138,100 4,261,647
Yesterday 2026-10-22 50.1 2,246,114 2,136,953 4,261,647
2 days ago 2026-10-21 50.1 2,243,639 2,134,681 4,261,647
1 week ago 2026-10-16 49.4 2,199,250 2,104,695 4,261,647
1 month ago 2026-09-23 47.2 2,116,520 2,009,564 4,261,647
3 months ago 2026-07-23 48.0 2,182,505 2,046,831 4,261,647
6 months ago 2026-04-23 45.3 2,026,643 1,928,505 4,261,647
1 year ago 2025-10-23 47.3 2,195,741 2,015,604 4,261,647
*

 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 46.5 1,062.71 -54.29 913,132 842,671 1,813,408 24,118
Brady Creek Water Supply 83.8 1,740.52 -2.48 25,754 24,132 28,808 1,809
Buchanan Water Supply 95.8 1,018.36 -1.64 843,821 830,159 866,694 22,120
E V Spence Water Supply 9.3 1,842.10 -55.90 48,210 48,210 517,272 3,223
Inks Water Supply 96.3 887.37 -0.63 13,509 13,226 13,729 793
Lyndon B Johnson Water Supply 98.9 824.81 -0.19 130,397 111,557 112,778 6,414
Marble Falls Water Supply 97.2 736.65 -0.35 7,384 7,384 7,597 607
Nasworthy Water Supply 85.9 1,871.75 -0.96 8,750 8,257 9,615 1,236
O C Fisher Water Supply and Flood Control 10.4 1,871.87 -36.13 12,094 12,093 115,742 1,060
O H Ivie Water Supply 41.0 1,529.09 -22.41 227,204 227,204 554,340 - n.a. -
Oak Creek Water Supply 13.4 1,973.27 -26.73 5,421 5,271 39,210 509
Twin Buttes Water Supply and Flood Control 4.3 1,894.35 -45.85 11,685 7,936 182,454 1,025
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.