Lake Texana: 89.2% full as of 2025-08-27

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 2025-08-27 89.2 42.27 147,020 141,807 158,975 9,571
Yesterday 2025-08-26 89.3 42.29 147,211 141,998 158,975 9,580
2 days ago 2025-08-25 89.6 42.34 147,691 142,478 158,975 9,601
1 week ago 2025-08-20 90.8 42.53 149,522 144,309 158,975 9,679
1 month ago 2025-07-27 97.1 43.54 159,507 154,294 158,975 10,086
3 months ago 2025-05-27 73.6 39.50 122,221 117,008 158,975 8,416
6 months ago 2025-02-27 68.8 38.57 114,554 109,341 158,975 8,069
1 year ago 2024-08-27 95.1 43.23 156,399 151,186 158,975 9,968
*

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 2025-08-27 17:00 42.24 44.00 -1.76
1 hour prior 2025-08-27 16:00 42.26 44.00 -1.74
2 hours prior 2025-08-27 15:00 42.26 44.00 -1.74
6 hours prior 2025-08-27 11:00 42.25 44.00 -1.75
12 hours prior 2025-08-27 05:00 42.28 44.00 -1.72
24 hours prior 2025-08-26 17:00 42.29 44.00 -1.71
48 hours prior 2025-08-25 17:00 42.31 44.00 -1.69
*

Data is provisional and subject to revision.

Additional Information

Impoundment date 1981-01-01
Vertical datum NGVD29
Dead pool elevation 14.00 ft above NGVD29
Service spillway crest elevation 23.00 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
Data Source USGS:08164525

Lake Location