Joe Pool Lake: 94.4% full as of 2026-08-22
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 | 2026-08-22 | 94.4 | 520.71 | 142,599 | 141,229 | 149,629 | 6,332 |
| Yesterday | 2026-08-21 | 94.5 | 520.73 | 142,726 | 141,356 | 149,629 | 6,337 |
| 2 days ago | 2026-08-20 | 94.6 | 520.76 | 142,916 | 141,546 | 149,629 | 6,344 |
| 1 week ago | 2026-08-15 | 95.4 | 520.94 | 144,062 | 142,692 | 149,629 | 6,390 |
| 1 month ago | 2026-07-22 | 99.4 | 521.86 | 150,066 | 148,696 | 149,629 | 6,650 |
| 3 months ago | 2026-05-22 | 100.0 | 522.32 | 153,153 | 149,629 | 149,629 | 6,766 |
| 6 months ago | 2026-02-22 | 100.0 | 522.30 | 153,018 | 149,629 | 149,629 | 6,762 |
| 1 year ago | 2025-08-22 | 98.0 | 521.54 | 147,950 | 146,580 | 149,629 | 6,572 |
*
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 | 2026-08-22 16:00 | 520.69 | 522.00 | -1.31 |
| 1 hour prior | 2026-08-22 15:00 | 520.70 | 522.00 | -1.30 |
| 2 hours prior | 2026-08-22 14:00 | 520.70 | 522.00 | -1.30 |
| 6 hours prior | 2026-08-22 10:00 | 520.70 | 522.00 | -1.30 |
| 12 hours prior | 2026-08-22 04:00 | 520.71 | 522.00 | -1.29 |
| 24 hours prior | 2026-08-21 16:00 | 520.71 | 522.00 | -1.29 |
| 48 hours prior | 2026-08-20 16:00 | 520.75 | 522.00 | -1.25 |
*
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
