Cooper (Chapman) Lake is 36.6% full as of 2014-10-20

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 2014-10-20 36.6 428.50 -11.50 133,769 95,171 260,332 10,742
Yesterday 2014-10-19 36.7 428.53 -11.47 134,092 95,494 260,332 10,762
2 days ago 2014-10-18 36.8 428.57 -11.43 134,523 95,925 260,332 10,789
1 week ago 2014-10-13 37.2 428.66 -11.34 135,497 96,899 260,332 10,850
1 month ago 2014-09-20 40.3 429.38 -10.62 143,486 104,888 260,332 11,326
3 months ago 2014-07-20 51.9 431.89 -8.11 173,698 135,100 260,332 12,842
6 months ago 2014-04-20 39.6 429.22 -10.78 141,682 103,084 260,332 11,232
1 year ago 2013-10-20 29.3 426.64 -13.36 114,977 76,379 260,332 9,496
*

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