Houston Area Reservoirs: Monitored Water Supply Reservoirs are 99.1% full on 2026-05-23

Historical Data

Date Percent Full Reservoir Storage
(acre-ft) 		Conservation Storage
(acre-ft) 		Conservation Capacity
(acre-ft)
Today 2026-05-23 99.1 2,142,465 2,133,966 2,153,399
Yesterday 2026-05-22 99.1 2,146,688 2,133,501 2,153,399
2 days ago 2026-05-21 99.1 2,155,904 2,133,281 2,153,399
1 week ago 2026-05-16 99.4 2,171,513 2,141,169 2,153,399
1 month ago 2026-04-23 98.3 2,128,653 2,117,812 2,153,399
3 months ago 2026-02-23 99.0 2,148,580 2,131,473 2,153,399
6 months ago 2025-11-23 94.9 2,050,167 2,043,579 2,153,399
1 year ago 2025-05-23 99.7 2,151,141 2,146,739 2,153,399
*

 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)
Addicks 1 Flood Control - n.a. - 78.99 - n.a. - - n.a. - - n.a. - - n.a. - - n.a. -
Barker 2 Flood Control - n.a. - 79.96 - n.a. - - n.a. - - n.a. - - n.a. - - n.a. -
Conroe Water Supply 97.8 200.54 -0.46 408,511 408,484 417,577 19,646
Houston Water Supply 92.2 41.46 -0.92 125,779 121,978 132,318 11,036
Livingston Water Supply 100.0 131.06 0.06 1,608,175 1,603,504 1,603,504 77,986
footnotes
1

Addicks Reservoir is a flood control lake. It is not used for water supply and under normal conditions it is empty.

2

Barker Reservoir is a flood control lake. It is not used for water supply and under normal conditions it is empty.