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: 94.2% full as of 2022-01-21

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, and (2) 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.

Historical Data

Date Percent Full Mean Water Level
(ft)
Reservoir Storage
(acre-ft)
Conservation Storage
(acre-ft)
Conservation Capacity
(acre-ft)
Surface Area
(acres)
Today 2022-01-21 94.2 42.97 150,515 150,236 159,566 8,927
Yesterday 2022-01-20 94.5 43.03 151,051 150,772 159,566 8,942
2 days ago 2022-01-19 94.0 42.95 150,336 150,057 159,566 8,922
1 week ago 2022-01-14 95.1 43.14 152,036 151,757 159,566 8,969
1 month ago 2021-12-21 99.4 43.89 158,835 158,556 159,566 9,166
3 months ago 2021-10-21 97.0 43.48 155,100 154,821 159,566 9,055
6 months ago 2021-07-21 99.8 43.97 159,569 159,290 159,566 9,523
1 year ago 2021-01-21 99.8 43.97 159,569 159,290 159,566 9,523
*

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 2022-01-21 05:00 42.95 44.00 -1.05 below flood pool
1 hour prior 2022-01-21 04:00 42.95 44.00 -1.05 below flood pool
2 hours prior 2022-01-21 03:00 42.96 44.00 -1.04 below flood pool
6 hours prior 2022-01-20 23:00 42.99 44.00 -1.01 below flood pool
12 hours prior 2022-01-20 17:00 42.99 44.00 -1.01 below flood pool
24 hours prior 2022-01-20 05:00 43.09 44.00 -0.91 below flood pool
48 hours prior 2022-01-19 05:00 42.97 44.00 -1.03 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 4.00 ft above NGVD29
Service spillway crest elevation 23.00 ft above NGVD29
Top of flood gate elevation 45.00 ft above NGVD29
Emergency spillway crest elevation 45.00 ft above NGVD29
Maximum design elevation 47.00 ft above NGVD29
Top of dam elevation 55.00 ft above NGVD29
Conservation pool elevation 44.00 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

Lake Location