Lake Coleman: 82.5% full as of 2026-08-15
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 | 2026-08-15 | 82.5 | 1,713.68 | 31,414 | 31,396 | 38,075 | 1,678 |
| Yesterday | 2026-08-14 | 82.6 | 1,713.71 | 31,464 | 31,446 | 38,075 | 1,679 |
| 2 days ago | 2026-08-13 | 82.8 | 1,713.75 | 31,532 | 31,514 | 38,075 | 1,681 |
| 1 week ago | 2026-08-08 | 83.4 | 1,713.89 | 31,767 | 31,749 | 38,075 | 1,686 |
| 1 month ago | 2026-07-15 | 85.6 | 1,714.39 | 32,615 | 32,597 | 38,075 | 1,705 |
| 3 months ago | 2026-05-15 | 86.5 | 1,714.58 | 32,940 | 32,922 | 38,075 | 1,712 |
| 6 months ago | 2026-02-15 | 84.2 | 1,714.08 | 32,088 | 32,070 | 38,075 | 1,693 |
| 1 year ago | 2025-08-15 | 93.5 | 1,716.12 | 35,625 | 35,607 | 38,075 | 1,768 |
*
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 | 2026-08-15 19:30 | 1,713.68 | 1,717.50 | -3.82 |
| 1 hour prior | 2026-08-15 18:30 | 1,713.68 | 1,717.50 | -3.82 |
| 2 hours prior | 2026-08-15 17:30 | 1,713.67 | 1,717.50 | -3.83 |
| 6 hours prior | 2026-08-15 13:30 | 1,713.70 | 1,717.50 | -3.80 |
| 12 hours prior | 2026-08-15 07:30 | 1,713.68 | 1,717.50 | -3.82 |
| 24 hours prior | 2026-08-14 19:30 | 1,713.70 | 1,717.50 | -3.80 |
| 48 hours prior | 2026-08-13 19:30 | 1,713.73 | 1,717.50 | -3.77 |
*
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
