Coleto Creek Reservoir: 86.2% full as of 2019-08-21

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 2019-08-21 86.2 96.20 26,742 26,742 31,040 - n.a. -
1 day prior 2019-08-20 86.4 96.23 26,815 26,815 31,040 - n.a. -
2 days prior 2019-08-19 86.6 96.26 26,889 26,889 31,040 - n.a. -
1 week prior 2019-08-14 88.0 96.43 27,304 27,304 31,040 - n.a. -
1 month prior 2019-07-21 93.3 97.11 28,953 28,953 31,040 - n.a. -
3 months prior 2019-05-21 100.0 98.24 31,749 31,040 31,040 - n.a. -
6 months prior 2019-02-21 100.0 98.26 31,809 31,040 31,040 - n.a. -
1 year prior 2018-08-21 72.8 94.37 22,596 22,596 31,040 - 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 2019-08-21 22:00 96.19 98.00 -1.81 below flood pool
1 hour prior 2019-08-21 21:00 96.20 98.00 -1.80 below flood pool
2 hours prior 2019-08-21 20:00 96.19 98.00 -1.81 below flood pool
6 hours prior 2019-08-21 16:00 96.21 98.00 -1.79 below flood pool
12 hours prior 2019-08-21 10:00 96.20 98.00 -1.80 below flood pool
24 hours prior 2019-08-20 22:00 96.21 98.00 -1.79 below flood pool
48 hours prior 2019-08-19 22:00 96.25 98.00 -1.75 below flood pool
*

Data is provisional and subject to revision.

Additional Information

Impoundment date 1980-01-01
Vertical datum NGVD29 +80
Gauge USGS:08177400
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

Lake Location