Lake Tawakoni: 97.1% full as of 2023-11-29

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 2023-11-29 97.1 436.81 846,434 846,426 871,685 36,237
Yesterday 2023-11-28 97.2 436.83 847,160 847,152 871,685 36,257
2 days ago 2023-11-27 97.3 436.86 848,248 848,240 871,685 36,286
1 week ago 2023-11-22 97.6 436.94 851,154 851,146 871,685 36,366
1 month ago 2023-10-29 96.2 436.59 838,486 838,478 871,685 36,028
3 months ago 2023-08-29 95.5 436.43 832,733 832,725 871,685 35,883
6 months ago 2023-05-29 99.6 437.40 867,996 867,988 871,685 36,890
1 year ago 2022-11-29 93.0 435.80 810,296 810,288 871,685 35,353
*

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 2023-11-29 18:15 436.81 437.50 -0.69
1 hour prior 2023-11-29 17:15 436.81 437.50 -0.69
2 hours prior 2023-11-29 16:15 436.81 437.50 -0.69
6 hours prior 2023-11-29 12:15 436.81 437.50 -0.69
12 hours prior 2023-11-29 06:15 436.82 437.50 -0.68
24 hours prior 2023-11-28 18:15 436.83 437.50 -0.67
48 hours prior 2023-11-27 18:15 436.85 437.50 -0.65
*

Data is provisional and subject to revision.

Additional Information

Impoundment date 1960-01-01
Vertical datum NGVD29
Dead pool elevation 378.00 ft above NGVD29
Emergency spillway crest elevation 437.50 ft above NGVD29
Top of dam elevation 454.00 ft above NGVD29
Conservation pool elevation 437.50 ft above NGVD29
Data download (CSV) period of record, last one year, last 30 days

Elevation-Area-Capacity Curves

1960-01-01 (source: USGS)
2000-10-01 (source: USGS)
2009-08-01 (source: TWDB) : GIS Data
Data Source USGS:08017400

Lake Location