Lake Jacksonville is 98.9% full as of 2016-07-27

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, while 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.

Date Percent Full Mean Water Level
(ft)
Reservoir Storage
(acre-ft)
Conservation Storage
(acre-ft)
Conservation Capacity
(acre-ft)
Surface Area
(acres)
Today 2016-07-27 98.9 421.76 25,454 25,392 25,670 1,153
Yesterday 2016-07-26 99.0 421.77 25,466 25,404 25,670 1,153
2 days ago 2016-07-25 99.0 421.78 25,477 25,415 25,670 1,153
1 week ago 2016-07-20 99.5 421.90 25,616 25,554 25,670 1,157
1 month ago 2016-06-27 100.0 422.10 25,848 25,670 25,670 - n.a. -
3 months ago 2016-04-27 100.0 422.26 26,035 25,670 25,670 - n.a. -
6 months ago 2016-01-27 100.0 422.03 25,767 25,670 25,670 - n.a. -
1 year ago 2015-07-27 97.9 421.54 25,201 25,139 25,670 1,146
*

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 2016-07-27 09:15 421.75 422.0 -0.2 below flood pool
1 hour prior 2016-07-27 08:15 421.75 422.0 -0.2 below flood pool
2 hours prior 2016-07-27 07:15 421.74 422.0 -0.3 below flood pool
6 hours prior 2016-07-27 03:15 421.75 422.0 -0.2 below flood pool
12 hours prior 2016-07-26 21:15 421.77 422.0 -0.2 below flood pool
24 hours prior 2016-07-26 09:15 421.78 422.0 -0.2 below flood pool
48 hours prior 2016-07-25 09:15 421.78 422.0 -0.2 below flood pool
*

Data is provisional and subject to revision.

Additional Information

Impoundment date 1957-01-01
Vertical datum NGVD29
Gauge USGS:08032200
Dead pool elevation 372.0 ft above NGVD29
Service spillway crest elevation 422 ft above NGVD29
Conservation pool elevation 422.0 ft above NGVD29
Emergency spillway crest elevation 431 ft above NGVD29
Top of dam elevation 438 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