Lake Coleman: 79.7% full as of 2026-09-11
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 | 2026-09-11 | 79.7 | 1,713.04 | 30,348 | 30,330 | 38,075 | 1,654 |
| Yesterday | 2026-09-10 | 79.7 | 1,713.04 | 30,348 | 30,330 | 38,075 | 1,654 |
| 2 days ago | 2026-09-09 | 79.7 | 1,713.06 | 30,381 | 30,363 | 38,075 | 1,655 |
| 1 week ago | 2026-09-04 | 80.2 | 1,713.17 | 30,563 | 30,545 | 38,075 | 1,659 |
| 1 month ago | 2026-08-11 | 83.1 | 1,713.82 | 31,650 | 31,632 | 38,075 | 1,683 |
| 3 months ago | 2026-06-11 | 87.6 | 1,714.84 | 33,387 | 33,369 | 38,075 | 1,729 |
| 6 months ago | 2026-03-11 | 84.2 | 1,714.07 | 32,072 | 32,054 | 38,075 | 1,693 |
| 1 year ago | 2025-09-11 | 91.2 | 1,715.62 | 34,744 | 34,726 | 38,075 | 1,753 |
*
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 | 2026-09-11 03:30 | 1,713.03 | 1,717.50 | -4.47 |
| 1 hour prior | 2026-09-11 02:30 | 1,713.03 | 1,717.50 | -4.47 |
| 2 hours prior | 2026-09-11 01:30 | 1,713.04 | 1,717.50 | -4.46 |
| 6 hours prior | 2026-09-10 21:30 | 1,713.03 | 1,717.50 | -4.47 |
| 12 hours prior | 2026-09-10 15:30 | 1,713.05 | 1,717.50 | -4.45 |
| 24 hours prior | 2026-09-10 03:30 | 1,713.04 | 1,717.50 | -4.46 |
| 48 hours prior | 2026-09-09 03:30 | 1,713.06 | 1,717.50 | -4.44 |
*
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
