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 | 2021-10-20 | - n.a. - | 69.30 | - n.a. - | - n.a. - | - n.a. - | - n.a. - |
| Yesterday | 2021-10-19 | - n.a. - | 69.50 | - n.a. - | - n.a. - | - n.a. - | - n.a. - |
| 2 days ago | 2021-10-18 | - n.a. - | 69.55 | - n.a. - | - n.a. - | - n.a. - | - n.a. - |
| 1 week ago | 2021-10-13 | - n.a. - | 70.20 | - n.a. - | - n.a. - | - n.a. - | - n.a. - |
| 1 month ago | 2021-09-20 | - n.a. - | 70.61 | - n.a. - | - n.a. - | - n.a. - | - n.a. - |
| 3 months ago | 2021-07-20 | - n.a. - | 86.83 | - n.a. - | - n.a. - | - n.a. - | - n.a. - |
| 6 months ago | 2021-04-20 | - n.a. - | 67.96 | - n.a. - | - n.a. - | - n.a. - | - n.a. - |
| 1 year ago | 2020-10-20 | - n.a. - | 73.01 | - 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 | 2021-10-20 07:15 | 69.45 | 67.50 | 1.95 |
| 1 hour prior | 2021-10-20 06:15 | 69.41 | 67.50 | 1.91 |
| 2 hours prior | 2021-10-20 05:15 | 69.35 | 67.50 | 1.85 |
| 6 hours prior | 2021-10-20 01:15 | 69.30 | 67.50 | 1.80 |
| 12 hours prior | 2021-10-19 19:15 | 69.44 | 67.50 | 1.94 |
| 24 hours prior | 2021-10-19 07:15 | 69.64 | 67.50 | 2.14 |
| 48 hours prior | 2021-10-18 07:15 | 69.67 | 67.50 | 2.17 |
*
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
