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 | 2021-07-28 | - n.a. - | 72.13 | - n.a. - | - n.a. - | - n.a. - | - n.a. - |
| Yesterday | 2021-07-27 | - n.a. - | 71.06 | - n.a. - | - n.a. - | - n.a. - | - n.a. - |
| 2 days ago | 2021-07-26 | - n.a. - | 71.06 | - n.a. - | - n.a. - | - n.a. - | - n.a. - |
| 1 week ago | 2021-07-21 | - n.a. - | 86.14 | - n.a. - | - n.a. - | - n.a. - | - n.a. - |
| 1 month ago | 2021-06-28 | - n.a. - | 83.72 | - n.a. - | - n.a. - | - n.a. - | - n.a. - |
| 3 months ago | 2021-04-28 | - n.a. - | 67.98 | - n.a. - | - n.a. - | - n.a. - | - n.a. - |
| 6 months ago | 2021-01-28 | - n.a. - | 74.02 | - n.a. - | - n.a. - | - n.a. - | - n.a. - |
| 1 year ago | 2020-07-28 | - n.a. - | 85.67 | - 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 | 2021-07-28 20:15 | 68.45 | 67.50 | 0.95 |
| 1 hour prior | 2021-07-28 19:15 | 68.41 | 67.50 | 0.91 |
| 2 hours prior | 2021-07-28 18:15 | 68.39 | 67.50 | 0.89 |
| 6 hours prior | 2021-07-28 14:15 | 68.69 | 67.50 | 1.19 |
| 12 hours prior | 2021-07-28 08:15 | 74.84 | 67.50 | 7.34 |
| 24 hours prior | 2021-07-27 20:15 | 68.74 | 67.50 | 1.24 |
| 48 hours prior | 2021-07-26 20:15 | 68.37 | 67.50 | 0.87 |
*
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
