Lake Sulphur Springs: 100.0% full as of 2024-06-14

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 2024-06-14 100.0 459.05 17,938 17,747 17,747 - n.a. -
Yesterday 2024-06-13 100.0 459.06 17,958 17,747 17,747 - n.a. -
2 days ago 2024-06-12 100.0 459.09 18,017 17,747 17,747 - n.a. -
1 week ago 2024-06-07 100.0 459.65 19,134 17,747 17,747 - n.a. -
1 month ago 2024-05-14 100.0 459.26 18,356 17,747 17,747 - n.a. -
3 months ago 2024-03-14 100.0 459.16 18,157 17,747 17,747 - n.a. -
6 months ago 2023-12-14 90.2 458.00 16,015 16,015 17,747 - n.a. -
1 year ago 2023-06-14 100.0 459.28 18,396 17,747 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 2024-06-14 22:30 459.03 458.95 0.08
1 hour prior 2024-06-14 21:30 459.03 458.95 0.08
2 hours prior 2024-06-14 20:30 459.03 458.95 0.08
6 hours prior 2024-06-14 16:30 459.04 458.95 0.09
12 hours prior 2024-06-14 10:30 459.05 458.95 0.10
24 hours prior 2024-06-13 22:30 459.05 458.95 0.10
48 hours prior 2024-06-12 22:30 459.07 458.95 0.12
*

Data is provisional and subject to revision.

Additional Information

Impoundment date 1973-01-01
Vertical datum NGVD29
Service spillway crest elevation 441.00 ft above NGVD29
Service spillway crest elevation 457.00 ft above NGVD29
Top of flood gate elevation 441.00 ft above NGVD29
Emergency spillway crest elevation 462.00 ft above NGVD29
Top of dam elevation 474.00 ft above NGVD29
Conservation pool elevation 458.95 ft above NGVD29
Data download (CSV) period of record, last one year, last 30 days

Elevation-Area-Capacity Curves

1973-01-01 (source: USGS)
Data Source USGS:07343460

Lake Location