San-Jacinto River Basin Reservoirs: Monitored Water Supply Reservoirs are 95.4% full on 2026-09-01

Historical Data

Date Percent Full Reservoir Storage
(acre-ft)
Conservation Storage
(acre-ft)
Conservation Capacity
(acre-ft)
Today 2026-09-01 95.4 528,546 524,718 549,895
Yesterday 2026-08-31 96.5 534,487 530,659 549,895
2 days ago 2026-08-30 96.6 535,218 531,046 549,895
1 week ago 2026-08-25 96.5 534,227 530,399 549,895
1 month ago 2026-08-01 98.4 544,959 541,131 549,895
3 months ago 2026-06-01 99.5 553,127 547,116 549,895
6 months ago 2026-03-01 96.0 532,011 527,953 549,895
1 year ago 2025-09-01 100.0 558,402 549,895 549,895
*

 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)
Addicks 1 Flood Control - n.a. - 76.42 - n.a. - - n.a. - - n.a. - - n.a. - - n.a. -
Barker 2 Flood Control - n.a. - 69.99 - n.a. - - n.a. - - n.a. - - n.a. - - n.a. -
Conroe Water Supply 95.3 200.00 -1.00 397,981 397,954 417,577 19,354
Houston Water Supply 95.8 41.89 -0.49 130,565 126,764 132,318 11,226
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.