recent changes

2013-06-19: The vertical datums of gauge, conservation pool and dead pool elevations for this lake have been adjusted to NAVD88+0.68ft.

Lake L. B. Johnson is 96.5% full as of 2015-07-06

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 2015-07-06 96.5 824.71 -0.29 131,304 111,002 115,056 6,120
Yesterday 2015-07-05 96.4 824.70 -0.30 131,243 110,941 115,056 6,117
2 days ago 2015-07-04 96.3 824.67 -0.33 131,059 110,757 115,056 6,110
1 week ago 2015-06-29 96.3 824.68 -0.32 131,121 110,819 115,056 6,112
1 month ago 2015-06-06 96.8 824.77 -0.23 131,672 111,370 115,056 6,136
3 months ago 2015-04-06 96.3 824.67 -0.33 131,059 110,757 115,056 6,110
6 months ago 2015-01-06 96.6 824.73 -0.27 131,426 111,124 115,056 6,125
1 year ago 2014-07-06 95.8 824.59 -0.41 130,571 110,269 115,056 6,090
*

Percent Full is based on Conservation Storage and Conservation Capacity.

Additional Information

Impoundment date 1951-01-01
Vertical datum NAVD88 +0.68
Gauge LCRA:2958
Conservation pool elevation 825 ft above NGVD29 +0.68
Dead pool elevation 793 ft above NGVD29 +0.68

Elevation-Area-Capacity Curves

2007-05-01 (source: twdb) : GIS Data