Lake Sulphur Springs: 83.6% full as of 2026-10-24
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 | 2026-10-24 | 83.6 | 457.28 | 14,831 | 14,831 | 17,747 | - n.a. - |
| Yesterday | 2026-10-23 | 83.7 | 457.29 | 14,847 | 14,847 | 17,747 | - n.a. - |
| 2 days ago | 2026-10-22 | 83.8 | 457.30 | 14,864 | 14,864 | 17,747 | - n.a. - |
| 1 week ago | 2026-10-17 | 84.4 | 457.37 | 14,979 | 14,979 | 17,747 | - n.a. - |
| 1 month ago | 2026-09-24 | 85.5 | 457.49 | 15,176 | 15,176 | 17,747 | - n.a. - |
| 3 months ago | 2026-07-24 | 100.0 | 459.05 | 17,938 | 17,747 | 17,747 | - n.a. - |
| 6 months ago | 2026-04-24 | 86.6 | 457.61 | 15,373 | 15,373 | 17,747 | - n.a. - |
| 1 year ago | 2025-10-24 | 79.0 | 456.76 | 14,013 | 14,013 | 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 | 2026-10-24 18:30 | 457.28 | 458.95 | -1.67 |
| 1 hour prior | 2026-10-24 17:30 | 457.28 | 458.95 | -1.67 |
| 2 hours prior | 2026-10-24 16:30 | 457.28 | 458.95 | -1.67 |
| 6 hours prior | 2026-10-24 12:30 | 457.28 | 458.95 | -1.67 |
| 12 hours prior | 2026-10-24 06:30 | 457.27 | 458.95 | -1.68 |
| 24 hours prior | 2026-10-23 18:30 | 457.29 | 458.95 | -1.66 |
| 48 hours prior | 2026-10-22 18:30 | 457.30 | 458.95 | -1.65 |
*
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 |
| 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)
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|
| Data Source | USGS:07343460 |
| USGS Monitoring Location | USGS:07343460 |
Lake Location
