Lake Coleman is 96.6% full as of 2016-07-26

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, while 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.

Date Percent Full Mean Water Level
(ft)
Reservoir Storage
(acre-ft)
Conservation Storage
(acre-ft)
Conservation Capacity
(acre-ft)
Surface Area
(acres)
Most recent 2016-07-26 96.6 1,716.79 36,816 36,798 38,075 1,789
1 day prior 2016-07-25 96.8 1,716.82 36,870 36,852 38,075 1,790
2 days prior 2016-07-24 96.9 1,716.84 36,906 36,888 38,075 1,790
1 week prior 2016-07-19 97.4 1,716.96 37,121 37,103 38,075 1,794
1 month prior 2016-06-26 99.4 1,717.37 37,859 37,841 38,075 1,807
3 months prior 2016-04-26 100.0 1,718.52 39,958 38,075 38,075 - n.a. -
6 months prior 2016-01-26 79.8 1,713.07 30,397 30,379 38,075 1,656
1 year prior 2015-07-26 74.5 1,711.82 28,379 28,361 38,075 1,579
*

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 2016-07-27 03:30 1,716.77 1,717.5 -0.7 below flood pool
1 hour prior 2016-07-27 02:30 1,716.77 1,717.5 -0.7 below flood pool
2 hours prior 2016-07-27 01:30 1,716.78 1,717.5 -0.7 below flood pool
6 hours prior 2016-07-26 21:30 1,716.78 1,717.5 -0.7 below flood pool
12 hours prior 2016-07-26 15:30 1,716.79 1,717.5 -0.7 below flood pool
24 hours prior 2016-07-26 03:30 1,716.80 1,717.5 -0.7 below flood pool
48 hours prior 2016-07-25 03:30 1,716.82 1,717.5 -0.7 below flood pool
*

Data is provisional and subject to revision.

Additional Information

Impoundment date 1966-01-01
Vertical datum NGVD29
Gauge USGS:08140770
Dead pool elevation 1662.5 ft above NGVD29
Service spillway crest elevation 1717.5 ft above NGVD29
Conservation pool elevation 1717.5 ft above NGVD29
Emergency spillway crest elevation 1726 ft above NGVD29
Top of dam elevation 1740 ft above NGVD29
Data download (CSV) period of record, last one year, last 30 days

Elevation-Area-Capacity Curves

2006-08-01 (source: twdb) : GIS Data