recent changes

2013-05-08: The rating curve for this reservoir has been updated and replaced with the most recent data from the TWDB Hydrosurvey Program.

Lake Texana is 97.8% full as of 2016-09-26

The elevation-storage rating curve used to produce the storage hydrograph is made of two segments: (1) the segment up to the conservation pool top (below the red line) is based on measured data, while the segment in the flood pool (above the red line) is an extrapolation from the first segment and shouldn't be relied upon for flood storage information.

Date Percent Full Mean Water Level
(ft)
Reservoir Storage
(acre-ft)
Conservation Storage
(acre-ft)
Conservation Capacity
(acre-ft)
Surface Area
(acres)
Today 2016-09-26 97.8 43.61 156,279 156,000 159,566 9,089
Yesterday 2016-09-25 97.7 43.60 156,188 155,909 159,566 9,086
2 days ago 2016-09-24 97.8 43.61 156,279 156,000 159,566 9,089
1 week ago 2016-09-19 98.9 43.81 158,102 157,823 159,566 9,143
1 month ago 2016-08-26 100.0 44.12 160,950 159,566 159,566 - n.a. -
3 months ago 2016-06-26 99.7 43.94 159,294 159,015 159,566 9,371
6 months ago 2016-03-26 99.5 43.91 159,018 158,739 159,566 9,219
1 year ago 2015-09-26 89.5 42.12 143,013 142,734 159,566 8,725
*

Percent Full is based on Conservation Storage and Conservation Capacity and doesn't account for storage in flood pool.

**

   Values above, including today's are averaged conditions. For near real-time instantaneous water level, see table below or the interactive map viewer.

Most Recent Instantaneous Water Level

Date/time Water Level
(ft)
Conservation Pool Elevation
(ft)
Height Above Conservation Pool
(ft)
Most recent 2016-09-26 12:00 43.61 44.0 -0.4 below flood pool
1 hour prior 2016-09-26 11:00 43.60 44.0 -0.4 below flood pool
2 hours prior 2016-09-26 10:00 43.61 44.0 -0.4 below flood pool
6 hours prior 2016-09-26 06:00 43.61 44.0 -0.4 below flood pool
12 hours prior 2016-09-26 00:00 43.61 44.0 -0.4 below flood pool
24 hours prior 2016-09-25 12:00 43.59 44.0 -0.4 below flood pool
48 hours prior 2016-09-24 12:00 43.59 44.0 -0.4 below flood pool
*

Data is provisional and subject to revision.

Additional Information

Impoundment date 1981-01-01
Vertical datum NGVD29
Gauge USGS:08164525
Dead pool elevation 4.0 ft above NGVD29
Service spillway crest elevation 23 ft above NGVD29
Conservation pool elevation 44.0 ft above NGVD29
Top of flood gate elevation 45 ft above NGVD29
Emergency spillway crest elevation 45 ft above NGVD29
Maximum design elevation 47 ft above NGVD29
Top of dam elevation 55 ft above NGVD29
Data download (CSV) period of record, last one year, last 30 days

Elevation-Area-Capacity Curves

2010-03-01 (source: twdb) : GIS Data