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 | 2019-09-20 | - n.a. - | 86.90 | - n.a. - | - n.a. - | - n.a. - | - n.a. - |
| Yesterday | 2019-09-19 | - n.a. - | 81.04 | - n.a. - | - n.a. - | - n.a. - | - n.a. - |
| 2 days ago | 2019-09-18 | - n.a. - | 75.97 | - n.a. - | - n.a. - | - n.a. - | - n.a. - |
| 1 week ago | 2019-09-13 | - n.a. - | 72.41 | - n.a. - | - n.a. - | - n.a. - | - n.a. - |
| 1 month ago | 2019-08-20 | - n.a. - | 69.21 | - n.a. - | - n.a. - | - n.a. - | - n.a. - |
| 3 months ago | 2019-06-20 | - n.a. - | 68.88 | - n.a. - | - n.a. - | - n.a. - | - n.a. - |
| 6 months ago | 2019-03-20 | - n.a. - | 68.82 | - n.a. - | - n.a. - | - n.a. - | - n.a. - |
| 1 year ago | 2018-09-20 | - n.a. - | 68.88 | - 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 | 2019-09-20 14:45 | 87.99 | 67.50 | 20.49 |
| 1 hour prior | 2019-09-20 13:45 | 87.91 | 67.50 | 20.41 |
| 2 hours prior | 2019-09-20 12:45 | 87.92 | 67.50 | 20.42 |
| 6 hours prior | 2019-09-20 08:45 | 87.60 | 67.50 | 20.10 |
| 12 hours prior | 2019-09-20 02:45 | 86.36 | 67.50 | 18.86 |
| 24 hours prior | 2019-09-19 14:45 | 81.76 | 67.50 | 14.26 |
| 48 hours prior | 2019-09-18 14:45 | 76.59 | 67.50 | 9.09 |
*
Data is provisional and subject to revision.
Additional Information
| Impoundment date | 1948-01-01 |
| Vertical datum | NAVD88 |
| Gauge | USGS:08073000 |
| Dead pool elevation | 67.50 ft above NAVD88 |
| Emergency spillway crest elevation | 108.00 ft above NGVD29 |
| Top of dam elevation | 121.00 ft above NGVD29 |
| Data download (CSV) | period of record, last one year, last 30 days |
Lake Location
