Joe Pool Lake: 95.6% full as of 2026-08-14
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 | 2026-08-14 | 95.6 | 521.00 | 144,446 | 143,076 | 149,629 | 6,406 |
| Yesterday | 2026-08-13 | 95.7 | 521.03 | 144,638 | 143,268 | 149,629 | 6,415 |
| 2 days ago | 2026-08-12 | 96.0 | 521.08 | 144,959 | 143,589 | 149,629 | 6,429 |
| 1 week ago | 2026-08-07 | 96.8 | 521.27 | 146,186 | 144,816 | 149,629 | 6,488 |
| 1 month ago | 2026-07-14 | 99.5 | 521.89 | 150,265 | 148,895 | 149,629 | 6,657 |
| 3 months ago | 2026-05-14 | 100.0 | 522.07 | 151,467 | 149,629 | 149,629 | 6,694 |
| 6 months ago | 2026-02-14 | 99.9 | 521.97 | 150,799 | 149,429 | 149,629 | 6,674 |
| 1 year ago | 2025-08-14 | 98.9 | 521.75 | 149,336 | 147,966 | 149,629 | 6,626 |
*
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 | 2026-08-14 11:00 | 520.99 | 522.00 | -1.01 |
| 1 hour prior | 2026-08-14 10:00 | 521.00 | 522.00 | -1.00 |
| 2 hours prior | 2026-08-14 09:00 | 521.00 | 522.00 | -1.00 |
| 6 hours prior | 2026-08-14 05:00 | 521.00 | 522.00 | -1.00 |
| 12 hours prior | 2026-08-13 23:00 | 521.01 | 522.00 | -0.99 |
| 24 hours prior | 2026-08-13 11:00 | 521.04 | 522.00 | -0.96 |
| 48 hours prior | 2026-08-12 11:00 | 521.08 | 522.00 | -0.92 |
*
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
