Cooper (Chapman) Lake is 40.7% full as of 2014-09-18

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 2014-09-18 40.7 429.48 -10.52 144,622 106,024 260,332 11,379
Yesterday 2014-09-17 40.9 429.51 -10.49 144,963 106,365 260,332 11,395
2 days ago 2014-09-16 41.0 429.54 -10.46 145,305 106,707 260,332 11,410
1 week ago 2014-09-11 41.7 429.70 -10.30 147,137 108,539 260,332 11,488
1 month ago 2014-08-18 46.7 430.82 -9.18 160,303 121,705 260,332 12,060
3 months ago 2014-06-18 56.0 432.70 -7.30 184,298 145,700 260,332 13,346
6 months ago 2014-03-18 32.4 427.46 -12.54 122,966 84,368 260,332 10,000
1 year ago 2013-09-18 33.1 427.63 -12.37 124,677 86,079 260,332 10,132
*

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