Lake Sulphur Springs: 82.4% full as of 2026-11-08
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 | 2026-11-08 | 82.4 | 457.15 | 14,617 | 14,617 | 17,747 | - n.a. - |
| Yesterday | 2026-11-07 | 82.5 | 457.16 | 14,633 | 14,633 | 17,747 | - n.a. - |
| 2 days ago | 2026-11-06 | 82.5 | 457.17 | 14,650 | 14,650 | 17,747 | - n.a. - |
| 1 week ago | 2026-11-01 | 82.9 | 457.21 | 14,715 | 14,715 | 17,747 | - n.a. - |
| 1 month ago | 2026-10-08 | 86.1 | 457.55 | 15,275 | 15,275 | 17,747 | - n.a. - |
| 3 months ago | 2026-08-08 | 96.7 | 458.63 | 17,163 | 17,163 | 17,747 | - n.a. - |
| 6 months ago | 2026-05-08 | 92.4 | 458.21 | 16,398 | 16,398 | 17,747 | - n.a. - |
| 1 year ago | 2025-11-08 | 78.5 | 456.71 | 13,939 | 13,939 | 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 | 2026-11-08 09:30 | 457.15 | 458.95 | -1.80 |
| 1 hour prior | 2026-11-08 08:30 | 457.15 | 458.95 | -1.80 |
| 2 hours prior | 2026-11-08 07:30 | 457.15 | 458.95 | -1.80 |
| 6 hours prior | 2026-11-08 03:30 | 457.15 | 458.95 | -1.80 |
| 12 hours prior | 2026-11-07 21:30 | 457.16 | 458.95 | -1.79 |
| 24 hours prior | 2026-11-07 09:30 | 457.15 | 458.95 | -1.80 |
| 48 hours prior | 2026-11-06 09:30 | 457.17 | 458.95 | -1.78 |
*
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)
|
|
| Data Source | USGS:07343460 |
| USGS Monitoring Location | USGS:07343460 |
Lake Location
