Cooper (Chapman) Lake is 40.2% full as of 2014-09-21

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 2014-09-21 40.2 429.35 -10.65 143,147 104,549 260,332 11,308
Yesterday 2014-09-20 40.3 429.38 -10.62 143,486 104,888 260,332 11,326
2 days ago 2014-09-19 40.5 429.42 -10.58 143,940 105,342 260,332 11,348
1 week ago 2014-09-14 41.3 429.62 -10.38 146,220 107,622 260,332 11,450
1 month ago 2014-08-21 46.1 430.67 -9.33 158,501 119,903 260,332 11,967
3 months ago 2014-06-21 55.4 432.59 -7.41 182,834 144,236 260,332 13,271
6 months ago 2014-03-21 32.5 427.48 -12.52 123,166 84,568 260,332 10,014
1 year ago 2013-09-21 33.4 427.72 -12.28 125,592 86,994 260,332 10,204
*

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