Lake Tawakoni: 99.6% full as of 2021-02-24

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 2021-02-24 99.6 437.40 867,996 867,988 871,685 36,890
Yesterday 2021-02-23 99.5 437.38 867,259 867,251 871,685 36,864
2 days ago 2021-02-22 99.5 437.39 867,628 867,620 871,685 36,877
1 week ago 2021-02-17 99.7 437.44 869,475 869,467 871,685 37,064
1 month ago 2021-01-24 100.0 437.56 873,913 871,685 871,685 - n.a. -
3 months ago 2020-11-24 93.4 435.92 814,545 814,537 871,685 35,450
6 months ago 2020-08-24 95.0 436.31 828,433 828,425 871,685 35,778
1 year ago 2020-02-24 100.0 438.50 909,207 871,685 871,685 - n.a. -
*

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 2021-02-24 19:15 437.41 437.50 -0.09 below flood pool
1 hour prior 2021-02-24 18:15 437.41 437.50 -0.09 below flood pool
2 hours prior 2021-02-24 17:15 437.40 437.50 -0.10 below flood pool
6 hours prior 2021-02-24 13:15 437.42 437.50 -0.08 below flood pool
12 hours prior 2021-02-24 07:15 437.39 437.50 -0.11 below flood pool
24 hours prior 2021-02-23 19:15 437.39 437.50 -0.11 below flood pool
48 hours prior 2021-02-22 19:15 437.39 437.50 -0.11 below flood pool
*

Data is provisional and subject to revision.

Additional Information

Impoundment date 1960-01-01
Vertical datum NGVD29
Gauge USGS:08017400
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

Lake Location