Lake Bob Sandlin is 100.0% full as of 2016-06-28

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)
Most recent 2016-06-28 100.0 337.84 204,689 190,822 190,822 - n.a. -
1 day prior 2016-06-27 100.0 337.85 204,777 190,822 190,822 - n.a. -
2 days prior 2016-06-26 100.0 337.86 204,864 190,822 190,822 - n.a. -
1 week prior 2016-06-21 100.0 337.93 205,476 190,822 190,822 - n.a. -
1 month prior 2016-05-28 100.0 337.72 203,642 190,822 190,822 - n.a. -
3 months prior 2016-03-28 100.0 337.81 204,427 190,822 190,822 - n.a. -
6 months prior 2015-12-28 100.0 339.42 217,699 190,822 190,822 - n.a. -
1 year prior 2015-06-28 100.0 337.98 205,914 190,822 190,822 - 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 2016-06-29 00:00 337.83 337.5 0.3 into flood pool
1 hour prior 2016-06-28 23:00 337.83 337.5 0.3 into flood pool
2 hours prior 2016-06-28 22:00 337.83 337.5 0.3 into flood pool
6 hours prior 2016-06-28 18:00 337.83 337.5 0.3 into flood pool
12 hours prior 2016-06-28 12:00 337.84 337.5 0.3 into flood pool
24 hours prior 2016-06-28 00:00 337.86 337.5 0.4 into flood pool
48 hours prior 2016-06-27 00:00 337.85 337.5 0.4 into flood pool
*

Data is provisional and subject to revision.

Additional Information

Impoundment date 1978-01-01
Vertical datum NGVD29
Gauge USGS:07344489
Dead pool elevation 300.0 ft above NGVD29
Service spillway crest elevation 316.5 ft above NGVD29
Conservation pool elevation 337.5 ft above NGVD29
Top of flood gate elevation 339 ft above NGVD29
Emergency spillway crest elevation 341.3 ft above NGVD29
Maximum design elevation 345.6 ft above NGVD29
Top of dam elevation 349 ft above NGVD29
Data download (CSV) period of record, last one year, last 30 days

Elevation-Area-Capacity Curves

1978-01-01 (source: usgs)
2000-10-01 (source: usgs)
2008-11-01 (source: twdb) : GIS Data