Notes

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: 76.1% full as of 2022-11-28

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 2022-11-28 76.1 39.97 126,214 121,001 158,975 8,574
Yesterday 2022-11-27 76.1 39.97 126,214 121,001 158,975 8,574
2 days ago 2022-11-26 75.5 39.86 125,273 120,060 158,975 8,538
1 week ago 2022-11-21 68.8 38.57 114,554 109,341 158,975 8,069
1 month ago 2022-10-28 69.0 38.61 114,877 109,664 158,975 8,084
3 months ago 2022-08-28 70.6 38.92 117,401 112,188 158,975 8,200
6 months ago 2022-05-28 86.7 41.85 143,039 137,826 158,975 9,383
1 year ago 2021-11-28 98.5 43.76 161,735 156,522 158,975 10,165
*

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 2022-11-28 03:00 39.97 44.00 -4.03
1 hour prior 2022-11-28 02:00 39.97 44.00 -4.03
2 hours prior 2022-11-28 01:00 39.97 44.00 -4.03
6 hours prior 2022-11-27 21:00 39.97 44.00 -4.03
12 hours prior 2022-11-27 15:00 39.97 44.00 -4.03
24 hours prior 2022-11-27 03:00 39.97 44.00 -4.03
48 hours prior 2022-11-26 03:00 39.69 44.00 -4.31
*

Data is provisional and subject to revision.

Additional Information

Impoundment date 1981-01-01
Gauge USGS:08164525
Vertical datum NGVD29
Dead pool elevation 14.00 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

2000-08-01 (source: TWDB) : GIS Data
2010-03-01 (source: TWDB) : GIS Data
2020-08-01 (source: TWDB) : GIS Data

Lake Location