Lake Jacksonville: 99.1% full as of 2026-07-30
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 | 2026-07-30 | 99.1 | 421.79 | 25,489 | 25,427 | 25,670 | 1,154 |
| Yesterday | 2026-07-29 | 99.1 | 421.81 | 25,512 | 25,450 | 25,670 | 1,154 |
| 2 days ago | 2026-07-28 | 99.3 | 421.84 | 25,547 | 25,485 | 25,670 | 1,155 |
| 1 week ago | 2026-07-23 | 99.8 | 421.96 | 25,685 | 25,623 | 25,670 | 1,161 |
| 1 month ago | 2026-06-30 | 99.7 | 421.93 | 25,651 | 25,589 | 25,670 | 1,159 |
| 3 months ago | 2026-04-30 | 100.0 | 422.11 | 25,860 | 25,670 | 25,670 | - n.a. - |
| 6 months ago | 2026-01-30 | 100.0 | 422.15 | 25,906 | 25,670 | 25,670 | - n.a. - |
| 1 year ago | 2025-07-30 | 100.0 | 422.05 | 25,790 | 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 | 2026-07-30 15:15 | 421.79 | 422.00 | -0.21 |
| 1 hour prior | 2026-07-30 14:15 | 421.75 | 422.00 | -0.25 |
| 2 hours prior | 2026-07-30 13:15 | 421.77 | 422.00 | -0.23 |
| 6 hours prior | 2026-07-30 09:15 | 421.76 | 422.00 | -0.24 |
| 12 hours prior | 2026-07-30 03:15 | 421.81 | 422.00 | -0.19 |
| 24 hours prior | 2026-07-29 15:15 | 421.80 | 422.00 | -0.20 |
| 48 hours prior | 2026-07-28 15:15 | 421.84 | 422.00 | -0.16 |
*
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
