Lake Jacksonville: 100.0% full as of 2023-02-06

The elevation-storage rating curve used to produce the storage hydrograph is made of two segments: (1) the segment up to the conservation pool top (below the red line) is based on measured data, and (2) the segment in the flood pool (above the red line) is an extrapolation from the first segment and shouldn't be relied upon for flood storage information.

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 2023-02-06 100.0 422.13 25,883 25,670 25,670 - n.a. -
Yesterday 2023-02-05 100.0 422.15 25,906 25,670 25,670 - n.a. -
2 days ago 2023-02-04 100.0 422.20 25,964 25,670 25,670 - n.a. -
1 week ago 2023-01-30 100.0 422.10 25,848 25,670 25,670 - n.a. -
1 month ago 2023-01-06 96.3 421.18 24,791 24,729 25,670 1,135
3 months ago 2022-11-06 90.3 419.78 23,230 23,168 25,670 1,096
6 months ago 2022-08-06 94.1 420.68 24,227 24,165 25,670 1,121
1 year ago 2022-02-06 100.0 422.20 25,964 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 2023-02-06 16:15 422.13 422.00 0.13
1 hour prior 2023-02-06 15:15 422.10 422.00 0.10
2 hours prior 2023-02-06 14:15 422.11 422.00 0.11
6 hours prior 2023-02-06 10:15 422.11 422.00 0.11
12 hours prior 2023-02-06 04:15 422.16 422.00 0.16
24 hours prior 2023-02-05 16:15 422.14 422.00 0.14
48 hours prior 2023-02-04 16:15 422.17 422.00 0.17
*

Data is provisional and subject to revision.

Additional Information

Impoundment date 1957-01-01
Gauge USGS:08032200
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

Elevation-Area-Capacity Curves

1957-01-01 (source: USGS)
2006-05-01 (source: TWDB) : GIS Data

Lake Location