Lake Jacksonville: 95.2% full as of 2026-08-30
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 | 2026-08-30 | 95.2 | 420.93 | 24,508 | 24,446 | 25,670 | 1,128 |
| Yesterday | 2026-08-29 | 95.4 | 420.96 | 24,542 | 24,480 | 25,670 | 1,129 |
| 2 days ago | 2026-08-28 | 95.5 | 420.99 | 24,576 | 24,514 | 25,670 | 1,130 |
| 1 week ago | 2026-08-23 | 96.1 | 421.13 | 24,734 | 24,672 | 25,670 | 1,134 |
| 1 month ago | 2026-07-30 | 99.1 | 421.79 | 25,489 | 25,427 | 25,670 | 1,154 |
| 3 months ago | 2026-05-30 | 100.0 | 422.04 | 25,778 | 25,670 | 25,670 | - n.a. - |
| 6 months ago | 2026-02-28 | 100.0 | 422.12 | 25,871 | 25,670 | 25,670 | - n.a. - |
| 1 year ago | 2025-08-30 | 100.0 | 422.22 | 25,988 | 25,670 | 25,670 | - n.a. - |
*
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 | 2026-08-30 22:15 | 420.93 | 422.00 | -1.07 |
| 1 hour prior | 2026-08-30 21:15 | 420.93 | 422.00 | -1.07 |
| 2 hours prior | 2026-08-30 20:15 | 420.93 | 422.00 | -1.07 |
| 6 hours prior | 2026-08-30 16:15 | 420.94 | 422.00 | -1.06 |
| 12 hours prior | 2026-08-30 10:15 | 420.91 | 422.00 | -1.09 |
| 24 hours prior | 2026-08-29 22:15 | 420.95 | 422.00 | -1.05 |
| 48 hours prior | 2026-08-28 22:15 | 420.98 | 422.00 | -1.02 |
*
Data is provisional and subject to revision.
Additional Information
| Impoundment date | 1957-01-01 |
| Vertical datum | NGVD29 |
| Dead pool elevation | 372.00 ft above NGVD29 |
| Service spillway crest elevation | 422.00 ft above NGVD29 |
| Emergency spillway crest elevation | 431.00 ft above NGVD29 |
| Top of dam elevation | 438.00 ft above NGVD29 |
| Conservation pool elevation | 422.00 ft above NGVD29 |
| Data download (CSV) | period of record, last one year, last 30 days |
| Data Source | USGS:08032200 |
| USGS Monitoring Location | USGS:08032200 |
Lake Location
