Lake Coleman: 82.0% full as of 2026-08-19
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 | 2026-08-19 | 82.0 | 1,713.58 | 31,247 | 31,229 | 38,075 | 1,674 |
| Yesterday | 2026-08-18 | 82.1 | 1,713.60 | 31,280 | 31,262 | 38,075 | 1,675 |
| 2 days ago | 2026-08-17 | 82.2 | 1,713.62 | 31,314 | 31,296 | 38,075 | 1,676 |
| 1 week ago | 2026-08-12 | 82.9 | 1,713.78 | 31,582 | 31,564 | 38,075 | 1,682 |
| 1 month ago | 2026-07-19 | 85.7 | 1,714.42 | 32,666 | 32,648 | 38,075 | 1,706 |
| 3 months ago | 2026-05-19 | 86.2 | 1,714.52 | 32,837 | 32,819 | 38,075 | 1,709 |
| 6 months ago | 2026-02-19 | 84.1 | 1,714.05 | 32,038 | 32,020 | 38,075 | 1,692 |
| 1 year ago | 2025-08-19 | 93.1 | 1,716.03 | 35,466 | 35,448 | 38,075 | 1,765 |
*
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 | 2026-08-19 03:30 | 1,713.57 | 1,717.50 | -3.93 |
| 1 hour prior | 2026-08-19 02:30 | 1,713.57 | 1,717.50 | -3.93 |
| 2 hours prior | 2026-08-19 01:30 | 1,713.57 | 1,717.50 | -3.93 |
| 6 hours prior | 2026-08-18 21:30 | 1,713.58 | 1,717.50 | -3.92 |
| 12 hours prior | 2026-08-18 15:30 | 1,713.59 | 1,717.50 | -3.91 |
| 24 hours prior | 2026-08-18 03:30 | 1,713.60 | 1,717.50 | -3.90 |
| 48 hours prior | 2026-08-17 03:30 | 1,713.62 | 1,717.50 | -3.88 |
*
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
