Coleto Creek Reservoir: 77.6% full as of 2026-08-19
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 | 2026-08-19 | 77.6 | 95.06 | 24,093 | 24,093 | 31,040 | 2,238 |
| Yesterday | 2026-08-18 | 77.8 | 95.08 | 24,139 | 24,139 | 31,040 | 2,241 |
| 2 days ago | 2026-08-17 | 78.0 | 95.11 | 24,208 | 24,208 | 31,040 | 2,245 |
| 1 week ago | 2026-08-12 | 79.2 | 95.27 | 24,576 | 24,576 | 31,040 | 2,268 |
| 1 month ago | 2026-07-19 | 83.4 | 95.84 | 25,886 | 25,886 | 31,040 | 2,347 |
| 3 months ago | 2026-05-19 | 74.9 | 94.67 | 23,243 | 23,243 | 31,040 | 2,182 |
| 6 months ago | 2026-02-19 | 76.1 | 94.84 | 23,610 | 23,610 | 31,040 | 2,207 |
| 1 year ago | 2025-08-19 | 93.7 | 97.16 | 29,070 | 29,070 | 31,040 | 2,536 |
*
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 | 2026-08-19 04:00 | 95.05 | 98.00 | -2.95 |
| 1 hour prior | 2026-08-19 03:00 | 95.06 | 98.00 | -2.94 |
| 2 hours prior | 2026-08-19 02:00 | 95.06 | 98.00 | -2.94 |
| 6 hours prior | 2026-08-18 22:00 | 95.06 | 98.00 | -2.94 |
| 12 hours prior | 2026-08-18 16:00 | 95.08 | 98.00 | -2.92 |
| 24 hours prior | 2026-08-18 04:00 | 95.08 | 98.00 | -2.92 |
| 48 hours prior | 2026-08-17 04:00 | 95.12 | 98.00 | -2.88 |
*
Data is provisional and subject to revision.
Additional Information
| Impoundment date | 1980-01-01 |
| Vertical datum | NGVD29 +80 |
| Service spillway crest elevation | 71.00 ft above NGVD29 +80 |
| Emergency spillway crest elevation | 107.30 ft above NGVD29 +80 |
| Maximum design elevation | 114.80 ft above NGVD29 +80 |
| Top of dam elevation | 120.00 ft above NGVD29 +80 |
| Conservation pool elevation | 98.00 ft above NGVD29 +80 |
| Data download (CSV) | period of record, last one year, last 30 days |
Elevation-Area-Capacity Curves
1978-01-01 (source: UNKNOWN)
|
|
| Data Source | USGS:08177400 |
| USGS Monitoring Location | USGS:08177400 |
Lake Location
