Cooper (Chapman) Lake is 86.2% full as of 2015-03-28

Date Percent Full Water Level
(ft)
Height Above Conservation Pool
(ft)
Reservoir Storage
(acre-ft)
Conservation Storage
(acre-ft)
Conservation Capacity
(acre-ft)
Surface Area
(acres)
Today 2015-03-28 86.2 437.89 -2.11 263,058 224,460 260,332 16,410
Yesterday 2015-03-27 86.3 437.91 -2.09 263,386 224,788 260,332 16,418
2 days ago 2015-03-26 86.4 437.92 -2.08 263,551 224,953 260,332 16,422
1 week ago 2015-03-21 79.8 436.86 -3.14 246,373 207,775 260,332 15,999
1 month ago 2015-02-28 45.6 430.57 -9.43 157,308 118,710 260,332 11,908
3 months ago 2014-12-28 32.4 427.45 -12.55 122,866 84,268 260,332 9,993
6 months ago 2014-09-28 38.6 428.99 -11.01 139,115 100,517 260,332 11,080
1 year ago 2014-03-28 32.3 427.42 -12.58 122,566 83,968 260,332 9,971
*

Percent Full is based on Conservation Storage and Conservation Capacity.

Additional Information

Impoundment date 1991-01-01
Vertical datum NGVD29
Gauge USGS:07342495
Conservation pool elevation 440.0 ft above NGVD29
Dead pool elevation 415.5 ft above NGVD29

Elevation-Area-Capacity Curves

1991-01-01 (source: usgs)
2007-07-01 (source: twdb) : GIS Data