Lake Sulphur Springs: 81.9% full as of 2026-11-13
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 | 2026-11-13 | 81.9 | 457.10 | 14,535 | 14,535 | 17,747 | - n.a. - |
| Yesterday | 2026-11-12 | 82.1 | 457.12 | 14,567 | 14,567 | 17,747 | - n.a. - |
| 2 days ago | 2026-11-11 | 82.2 | 457.13 | 14,584 | 14,584 | 17,747 | - n.a. - |
| 1 week ago | 2026-11-06 | 82.5 | 457.17 | 14,650 | 14,650 | 17,747 | - n.a. - |
| 1 month ago | 2026-10-13 | 85.4 | 457.48 | 15,160 | 15,160 | 17,747 | - n.a. - |
| 3 months ago | 2026-08-13 | 95.4 | 458.50 | 16,926 | 16,926 | 17,747 | - n.a. - |
| 6 months ago | 2026-05-13 | 96.3 | 458.59 | 17,091 | 17,091 | 17,747 | - n.a. - |
| 1 year ago | 2025-11-13 | 77.8 | 456.62 | 13,805 | 13,805 | 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 | 2026-11-13 21:30 | 457.09 | 458.95 | -1.86 |
| 1 hour prior | 2026-11-13 20:30 | 457.09 | 458.95 | -1.86 |
| 2 hours prior | 2026-11-13 19:30 | 457.10 | 458.95 | -1.85 |
| 6 hours prior | 2026-11-13 15:30 | 457.10 | 458.95 | -1.85 |
| 12 hours prior | 2026-11-13 09:30 | 457.09 | 458.95 | -1.86 |
| 24 hours prior | 2026-11-12 21:30 | 457.11 | 458.95 | -1.84 |
| 48 hours prior | 2026-11-11 21:30 | 457.13 | 458.95 | -1.82 |
*
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
