Lake Sulphur Springs: 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 2023-02-06 100.0 460.09 20,026 17,747 17,747 - n.a. -
Yesterday 2023-02-05 100.0 460.13 20,112 17,747 17,747 - n.a. -
2 days ago 2023-02-04 100.0 460.15 20,155 17,747 17,747 - n.a. -
1 week ago 2023-01-30 90.9 458.06 16,124 16,124 17,747 - n.a. -
1 month ago 2023-01-06 87.5 457.70 15,521 15,521 17,747 - n.a. -
3 months ago 2022-11-06 70.5 455.72 12,505 12,505 17,747 - n.a. -
6 months ago 2022-08-06 63.3 454.76 11,231 11,231 17,747 - n.a. -
1 year ago 2022-02-06 56.7 453.80 10,058 10,058 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 2023-02-06 16:30 460.07 458.95 1.12
1 hour prior 2023-02-06 15:30 460.09 458.95 1.14
2 hours prior 2023-02-06 14:30 460.09 458.95 1.14
6 hours prior 2023-02-06 10:30 460.09 458.95 1.14
12 hours prior 2023-02-06 04:30 460.09 458.95 1.14
24 hours prior 2023-02-05 16:30 460.13 458.95 1.18
48 hours prior 2023-02-04 16:30 460.17 458.95 1.22
*

Data is provisional and subject to revision.

Additional Information

Impoundment date 1973-01-01
Gauge USGS:07343460
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)

Lake Location