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: 95.1% full as of 2023-03-22

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 2023-03-22 95.1 43.23 156,399 151,186 158,975 9,968
Yesterday 2023-03-21 95.1 43.23 156,399 151,186 158,975 9,968
2 days ago 2023-03-20 95.4 43.27 156,798 151,585 158,975 9,984
1 week ago 2023-03-15 95.9 43.36 157,698 152,485 158,975 10,019
1 month ago 2023-02-22 99.3 43.89 163,060 157,847 158,975 10,213
3 months ago 2022-12-22 93.7 43.00 154,117 148,904 158,975 9,874
6 months ago 2022-09-22 74.9 39.74 124,250 119,037 158,975 8,498
1 year ago 2022-03-22 95.8 43.34 157,498 152,285 158,975 10,011
*

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 2023-03-22 17:00 43.19 44.00 -0.81
1 hour prior 2023-03-22 16:00 43.20 44.00 -0.80
2 hours prior 2023-03-22 15:00 43.20 44.00 -0.80
6 hours prior 2023-03-22 11:00 43.19 44.00 -0.81
12 hours prior 2023-03-22 05:00 43.23 44.00 -0.77
24 hours prior 2023-03-21 17:00 43.23 44.00 -0.77
48 hours prior 2023-03-20 17:00 43.25 44.00 -0.75
*

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