Cooper (Chapman) Lake is 39.8% full as of 2014-04-18

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 2014-04-18 39.8 429.27 -10.73 142,244 103,646 260,332 11,262
Yesterday 2014-04-17 39.9 429.28 -10.72 142,356 103,758 260,332 11,268
2 days ago 2014-04-16 39.8 429.27 -10.73 142,244 103,646 260,332 11,262
1 week ago 2014-04-11 37.3 428.69 -11.31 135,822 97,224 260,332 10,870
1 month ago 2014-03-18 32.4 427.46 -12.54 122,966 84,368 260,332 10,000
3 months ago 2014-01-18 34.0 427.88 -12.12 127,234 88,636 260,332 10,326
6 months ago 2013-10-18 29.7 426.73 -13.27 115,834 77,236 260,332 9,550
1 year ago 2013-04-18 53.7 432.26 -7.74 178,491 139,893 260,332 13,060
*

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