Cooper (Chapman) Lake is 98.5% full as of 2015-08-02

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 2015-08-02 98.5 439.78 -0.22 295,032 256,434 260,332 17,599
Yesterday 2015-08-01 98.6 439.79 -0.21 295,207 256,609 260,332 17,609
2 days ago 2015-07-31 98.7 439.81 -0.19 295,560 256,962 260,332 17,630
1 week ago 2015-07-26 99.8 439.97 -0.03 298,396 259,798 260,332 17,890
1 month ago 2015-07-02 100.0 441.60 1.60 328,532 260,332 260,332 - n.a. -
3 months ago 2015-05-02 100.0 440.70 0.70 311,601 260,332 260,332 - n.a. -
6 months ago 2015-02-02 39.3 429.14 -10.86 140,785 102,187 260,332 11,182
1 year ago 2014-08-02 50.1 431.52 -8.48 168,986 130,388 260,332 12,631
*

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