Lake Sulphur Springs is 96.4% full as of 2016-07-25

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 2016-07-25 96.4 458.60 17,109 17,109 17,747 - n.a. -
Yesterday 2016-07-24 96.5 458.61 17,127 17,127 17,747 - n.a. -
2 days ago 2016-07-23 96.8 458.64 17,182 17,182 17,747 - n.a. -
1 week ago 2016-07-18 97.9 458.75 17,382 17,382 17,747 - n.a. -
1 month ago 2016-06-25 100.0 459.42 18,675 17,747 17,747 - n.a. -
3 months ago 2016-04-25 93.5 458.32 16,598 16,598 17,747 - n.a. -
6 months ago 2016-01-25 97.3 458.69 17,273 17,273 17,747 - n.a. -
1 year ago 2015-07-25 96.4 458.60 17,109 17,109 17,747 - 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 2016-07-25 10:30 458.59 458.9 -0.4 below flood pool
1 hour prior 2016-07-25 09:30 458.59 458.9 -0.4 below flood pool
2 hours prior 2016-07-25 08:30 458.59 458.9 -0.4 below flood pool
6 hours prior 2016-07-25 04:30 458.59 458.9 -0.4 below flood pool
12 hours prior 2016-07-24 22:30 458.60 458.9 -0.3 below flood pool
24 hours prior 2016-07-24 10:30 458.62 458.9 -0.3 below flood pool
48 hours prior 2016-07-23 10:30 458.64 458.9 -0.3 below flood pool
*

Data is provisional and subject to revision.

Additional Information

Impoundment date 1973-01-01
Vertical datum NGVD29
Gauge USGS:07343460
Service spillway crest elevation 441 ft above NGVD29
Service spillway crest elevation 457 ft above NGVD29
Conservation pool elevation 458.95 ft above NGVD29
Top of flood gate elevation 441 ft above NGVD29
Emergency spillway crest elevation 462 ft above NGVD29
Top of dam elevation 474 ft above NGVD29
Data download (CSV) period of record, last one year, last 30 days

Elevation-Area-Capacity Curves

1973-01-01 (source: usgs)