Cooper (Chapman) Lake is 92.0% full as of 2015-09-04

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 2015-09-04 92.0 438.79 -1.21 278,014 239,416 260,332 16,849
Yesterday 2015-09-03 92.2 438.82 -1.18 278,520 239,922 260,332 16,866
2 days ago 2015-09-02 92.4 438.85 -1.15 279,026 240,428 260,332 16,884
1 week ago 2015-08-28 93.4 439.01 -0.99 281,735 243,137 260,332 16,983
1 month ago 2015-08-04 98.0 439.70 -0.30 293,626 255,028 260,332 17,520
3 months ago 2015-06-04 100.0 442.14 2.14 339,035 260,332 260,332 - n.a. -
6 months ago 2015-03-04 49.0 431.29 -8.71 166,096 127,498 260,332 12,501
1 year ago 2014-09-04 43.0 430.00 -10.00 150,604 112,006 260,332 11,626
*

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