Joe Pool Lake: 91.5% full as of 2026-10-22
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 | 2026-10-22 | 91.5 | 520.01 | 138,223 | 136,853 | 149,629 | 6,174 |
| Yesterday | 2026-10-21 | 91.5 | 520.02 | 138,285 | 136,915 | 149,629 | 6,176 |
| 2 days ago | 2026-10-20 | 91.6 | 520.05 | 138,471 | 137,101 | 149,629 | 6,182 |
| 1 week ago | 2026-10-15 | 92.4 | 520.24 | 139,649 | 138,279 | 149,629 | 6,223 |
| 1 month ago | 2026-09-22 | 90.6 | 519.79 | 136,870 | 135,500 | 149,629 | 6,128 |
| 3 months ago | 2026-07-22 | 99.2 | 521.83 | 149,866 | 148,496 | 149,629 | 6,644 |
| 6 months ago | 2026-04-22 | 100.0 | 522.57 | 154,850 | 149,629 | 149,629 | 6,815 |
| 1 year ago | 2025-10-22 | 93.0 | 520.37 | 140,460 | 139,090 | 149,629 | 6,252 |
*
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 | 2026-10-22 11:00 | 520.00 | 522.00 | -2.00 |
| 1 hour prior | 2026-10-22 10:00 | 520.00 | 522.00 | -2.00 |
| 2 hours prior | 2026-10-22 09:00 | 520.00 | 522.00 | -2.00 |
| 6 hours prior | 2026-10-22 05:00 | 520.01 | 522.00 | -1.99 |
| 12 hours prior | 2026-10-21 23:00 | 520.01 | 522.00 | -1.99 |
| 24 hours prior | 2026-10-21 11:00 | 520.02 | 522.00 | -1.98 |
| 48 hours prior | 2026-10-20 11:00 | 520.05 | 522.00 | -1.95 |
*
Data is provisional and subject to revision.
Additional Information
| Impoundment date | 1986-01-01 |
| Vertical datum | NGVD29 |
| Dead pool elevation | 466.00 ft above NGVD29 |
| Emergency spillway crest elevation | 541.00 ft above NGVD29 |
| Flood pool elevation | 536.00 ft above NGVD29 |
| Maximum design elevation | 559.50 ft above NGVD29 |
| Top of dam elevation | 564.50 ft above NGVD29 |
| Conservation pool elevation | 522.00 ft above NGVD29 |
| Data download (CSV) | period of record, last one year, last 30 days |
| Data Source | USGS:08049800 |
| USGS Monitoring Location | USGS:08049800 |
Lake Location
