Lake Texana: 75.5% full as of 2025-05-06

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)
Most recent 2025-05-06 75.5 39.85 125,187 119,974 158,975 8,535
1 day prior 2025-05-05 75.5 39.85 125,187 119,974 158,975 8,535
2 days prior 2025-05-04 75.0 39.77 124,506 119,293 158,975 8,508
1 week prior 2025-04-29 75.7 39.90 125,614 120,401 158,975 8,551
1 month prior 2025-04-06 79.5 40.59 131,595 126,382 158,975 8,792
3 months prior 2025-02-06 70.6 38.92 117,401 112,188 158,975 8,200
6 months prior 2024-11-06 80.5 40.77 133,185 127,972 158,975 8,869
1 year prior 2024-05-06 94.2 43.08 154,908 149,695 158,975 9,908
*

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 2025-05-06 21:00 39.91 44.00 -4.09
1 hour prior 2025-05-06 20:00 39.88 44.00 -4.12
2 hours prior 2025-05-06 19:00 39.86 44.00 -4.14
6 hours prior 2025-05-06 15:00 39.86 44.00 -4.14
12 hours prior 2025-05-06 09:00 39.84 44.00 -4.16
24 hours prior 2025-05-05 21:00 39.89 44.00 -4.11
48 hours prior 2025-05-04 21:00 39.76 44.00 -4.24
*

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