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 95.5% full as of 2014-09-30

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 2014-09-30 95.5 824.53 -0.47 130,206 109,904 115,056 6,075
Yesterday 2014-09-29 95.5 824.53 -0.47 130,206 109,904 115,056 6,075
2 days ago 2014-09-28 95.7 824.56 -0.44 130,389 110,087 115,056 6,083
1 week ago 2014-09-23 95.8 824.58 -0.42 130,511 110,209 115,056 6,087
1 month ago 2014-08-30 96.3 824.68 -0.32 131,121 110,819 115,056 6,112
3 months ago 2014-06-30 96.2 824.66 -0.34 130,998 110,696 115,056 6,107
6 months ago 2014-03-30 96.4 824.70 -0.30 131,243 110,941 115,056 6,117
1 year ago 2013-09-30 97.8 824.96 -0.04 132,843 112,541 115,056 6,217
*

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