Cooper (Chapman) Lake is 91.9% full as of 2015-09-05

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 2015-09-05 91.9 438.78 -1.22 277,845 239,247 260,332 16,843
Yesterday 2015-09-04 92.0 438.79 -1.21 278,014 239,416 260,332 16,849
2 days ago 2015-09-03 92.2 438.82 -1.18 278,520 239,922 260,332 16,866
1 week ago 2015-08-29 93.2 438.98 -1.02 281,226 242,628 260,332 16,964
1 month ago 2015-08-05 97.8 439.68 -0.32 293,277 254,679 260,332 17,502
3 months ago 2015-06-05 100.0 441.86 1.86 333,557 260,332 260,332 - n.a. -
6 months ago 2015-03-05 51.8 431.87 -8.13 173,442 134,844 260,332 12,831
1 year ago 2014-09-05 42.8 429.96 -10.04 150,140 111,542 260,332 11,607
*

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
Data download (CSV) period of record, last one year, last 30 days

Elevation-Area-Capacity Curves

1991-01-01 (source: usgs)
2007-07-01 (source: twdb) : GIS Data