Cooper (Chapman) Lake is 98.8% full as of 2015-07-31

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 2015-07-31 98.8 439.82 -0.18 295,736 257,138 260,332 17,641
Yesterday 2015-07-30 99.0 439.85 -0.15 296,267 257,669 260,332 17,675
2 days ago 2015-07-29 99.2 439.89 -0.11 296,974 258,376 260,332 17,719
1 week ago 2015-07-24 100.0 440.02 0.02 299,286 260,332 260,332 - n.a. -
1 month ago 2015-06-30 100.0 441.81 1.81 332,586 260,332 260,332 - n.a. -
3 months ago 2015-04-30 100.0 440.87 0.87 314,745 260,332 260,332 - n.a. -
6 months ago 2015-01-31 38.9 429.05 -10.95 139,782 101,184 260,332 11,122
1 year ago 2014-07-31 50.3 431.56 -8.44 169,492 130,894 260,332 12,653
*

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