Lake Coleman: 81.8% full as of 2026-08-21
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 | 2026-08-21 | 81.8 | 1,713.53 | 31,163 | 31,145 | 38,075 | 1,673 |
| Yesterday | 2026-08-20 | 81.8 | 1,713.54 | 31,180 | 31,162 | 38,075 | 1,673 |
| 2 days ago | 2026-08-19 | 82.0 | 1,713.57 | 31,230 | 31,212 | 38,075 | 1,674 |
| 1 week ago | 2026-08-14 | 82.6 | 1,713.71 | 31,464 | 31,446 | 38,075 | 1,679 |
| 1 month ago | 2026-07-21 | 85.6 | 1,714.38 | 32,598 | 32,580 | 38,075 | 1,704 |
| 3 months ago | 2026-05-21 | 86.2 | 1,714.53 | 32,854 | 32,836 | 38,075 | 1,710 |
| 6 months ago | 2026-02-21 | 84.0 | 1,714.02 | 31,987 | 31,969 | 38,075 | 1,691 |
| 1 year ago | 2025-08-21 | 92.9 | 1,715.99 | 35,395 | 35,377 | 38,075 | 1,764 |
*
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) |
Conservation Pool Elevation (ft) |
Height Above Conservation Pool (ft) |
|
|---|---|---|---|---|
| Most recent | 2026-08-21 10:30 | 1,713.53 | 1,717.50 | -3.97 |
| 1 hour prior | 2026-08-21 09:30 | 1,713.53 | 1,717.50 | -3.97 |
| 2 hours prior | 2026-08-21 08:30 | 1,713.52 | 1,717.50 | -3.98 |
| 6 hours prior | 2026-08-21 04:30 | 1,713.53 | 1,717.50 | -3.97 |
| 12 hours prior | 2026-08-20 22:30 | 1,713.53 | 1,717.50 | -3.97 |
| 24 hours prior | 2026-08-20 10:30 | 1,713.55 | 1,717.50 | -3.95 |
| 48 hours prior | 2026-08-19 10:30 | 1,713.57 | 1,717.50 | -3.93 |
*
Data is provisional and subject to revision.
Additional Information
| Impoundment date | 1966-01-01 |
| Vertical datum | NGVD29 |
| Dead pool elevation | 1,662.50 ft above NGVD29 |
| Service spillway crest elevation | 1,717.50 ft above NGVD29 |
| Emergency spillway crest elevation | 1,726.00 ft above NGVD29 |
| Top of dam elevation | 1,740.00 ft above NGVD29 |
| Conservation pool elevation | 1,717.50 ft above NGVD29 |
| Data download (CSV) | period of record, last one year, last 30 days |
Elevation-Area-Capacity Curves
2006-08-01 (source: TWDB)
: GIS Data
|
|
| Data Source | USGS:08140770 |
| USGS Monitoring Location | USGS:08140770 |
Lake Location
