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 | 2018-05-21 | - n.a. - | 77.06 | - n.a. - | - n.a. - | - n.a. - | - n.a. - |
| Yesterday | 2018-05-20 | - n.a. - | 69.08 | - n.a. - | - n.a. - | - n.a. - | - n.a. - |
| 2 days ago | 2018-05-19 | - n.a. - | 68.69 | - n.a. - | - n.a. - | - n.a. - | - n.a. - |
| 1 week ago | 2018-05-14 | - n.a. - | 68.79 | - n.a. - | - n.a. - | - n.a. - | - n.a. - |
| 1 month ago | 2018-04-21 | - n.a. - | 69.05 | - n.a. - | - n.a. - | - n.a. - | - n.a. - |
| 3 months ago | 2018-02-21 | - n.a. - | 76.16 | - n.a. - | - n.a. - | - n.a. - | - n.a. - |
| 6 months ago | 2017-11-21 | - n.a. - | 68.90 | - n.a. - | - n.a. - | - n.a. - | - n.a. - |
| 1 year ago | 2017-05-21 | - n.a. - | 69.39 | - 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 | 2018-05-21 16:30 | 79.89 | 67.5 | 12.4 |
| 1 hour prior | 2018-05-21 15:30 | 80.09 | 67.5 | 12.6 |
| 2 hours prior | 2018-05-21 14:30 | 80.29 | 67.5 | 12.8 |
| 6 hours prior | 2018-05-21 10:30 | 79.29 | 67.5 | 11.8 |
| 12 hours prior | 2018-05-21 04:30 | 76.51 | 67.5 | 9.0 |
| 24 hours prior | 2018-05-20 16:30 | 68.71 | 67.5 | 1.2 |
| 48 hours prior | 2018-05-19 16:30 | 68.66 | 67.5 | 1.2 |
*
Data is provisional and subject to revision.
Additional Information
| Impoundment date | 1948-01-01 |
| Vertical datum | NAVD88 |
| Gauge | USGS:08073000 |
| Dead pool elevation | 67.5 ft above NAVD88 |
| Emergency spillway crest elevation | 108.0 ft above NGVD29 |
| Top of dam elevation | 121.0 ft above NGVD29 |
| Data download (CSV) | period of record, last one year, last 30 days |
Lake Location
