Recent changes

2017-9-14: The rating curve for Addicks Reservoir has been updated and replaced with data from the U.S. Army Corps of Engineers Galveston District.

For near-real time water levels of this reservoir and others in flood stage, Visit Flood Viewer

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

Historical Data

Date Percent Full Mean Water Level
(ft)
Reservoir Storage
(acre-ft)
Conservation Storage
(acre-ft)
Conservation Capacity
(acre-ft)
Surface Area
(acres)
Today 2017-12-18 - n.a. - 78.25 - n.a. - - n.a. - - n.a. - - n.a. -
Yesterday 2017-12-17 - n.a. - 76.08 - n.a. - - n.a. - - n.a. - - n.a. -
2 days ago 2017-12-16 - n.a. - 69.07 - n.a. - - n.a. - - n.a. - - n.a. -
1 week ago 2017-12-11 - n.a. - 71.93 - n.a. - - n.a. - - n.a. - - n.a. -
1 month ago 2017-11-18 - n.a. - 68.83 - n.a. - - n.a. - - n.a. - - n.a. -
3 months ago 2017-09-18 - n.a. - 96.86 - n.a. - - n.a. - - n.a. - - n.a. -
6 months ago 2017-06-18 - n.a. - 68.84 - n.a. - - n.a. - - n.a. - - n.a. -
1 year ago 2016-12-18 - n.a. - 68.95 - n.a. - - n.a. - - n.a. - - n.a. -
*

Percent Full is based on Conservation Storage and Conservation Capacity and doesn't account for storage in flood pool.

**

   Values above, including today's are averaged conditions. For near real-time instantaneous water level, see table below or the interactive map viewer.

Most Recent Instantaneous Water Level

Date/time Water Level
(ft)
Flood Pool Lower Bound
(ft)
Height Into Flood Pool
(ft)
Most recent 2017-12-18 11:30 78.13 68.0 10.1 into flood pool
1 hour prior 2017-12-18 10:30 78.19 68.0 10.2 into flood pool
2 hours prior 2017-12-18 09:30 78.25 68.0 10.2 into flood pool
6 hours prior 2017-12-18 05:30 78.30 68.0 10.3 into flood pool
12 hours prior 2017-12-17 23:30 78.17 68.0 10.2 into flood pool
24 hours prior 2017-12-17 11:30 76.73 68.0 8.7 into flood pool
48 hours prior 2017-12-16 11:30 69.02 68.0 1.0 into flood pool
*

Data is provisional and subject to revision.

Additional Information

Impoundment date 1948-01-01
Vertical datum NAVD88
Gauge USGS:08073000
Dead pool elevation 68.0 ft above NAVD88
Emergency spillway crest elevation 108.9 ft above NGVD29
Top of dam elevation 119.6 ft above NGVD29
Data download (CSV) period of record, last one year, last 30 days

Elevation-Area-Capacity Curves

1974-10-01 (source: twdb)
2008-10-01 (source: usace)

Lake Location