Coleto Creek Reservoir: 88.0% full as of 2025-02-21

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)
Most recent 2025-02-21 88.0 96.44 27,328 27,328 31,040 2,433
1 day prior 2025-02-20 88.2 96.46 27,377 27,377 31,040 2,436
2 days prior 2025-02-19 88.6 96.51 27,499 27,499 31,040 2,443
1 week prior 2025-02-14 89.2 96.59 27,694 27,694 31,040 2,455
1 month prior 2025-01-21 90.6 96.77 28,134 28,134 31,040 2,481
3 months prior 2024-11-21 78.3 95.15 24,300 24,300 31,040 2,251
6 months prior 2024-08-21 93.9 97.19 29,141 29,141 31,040 2,540
1 year prior 2024-02-21 100.0 98.36 32,104 31,040 31,040 2,701
*

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 2025-02-22 00:00 96.43 98.00 -1.57
1 hour prior 2025-02-21 23:00 96.42 98.00 -1.58
2 hours prior 2025-02-21 22:00 96.42 98.00 -1.58
6 hours prior 2025-02-21 18:00 96.43 98.00 -1.57
12 hours prior 2025-02-21 12:00 96.44 98.00 -1.56
24 hours prior 2025-02-21 00:00 96.44 98.00 -1.56
48 hours prior 2025-02-20 00:00 96.48 98.00 -1.52
*

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
Top of flood gate elevation 99.00 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

Lake Location