Lake Tawakoni: 93.1% full as of 2022-12-09

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 2022-12-09 93.1 435.84 811,711 811,703 871,685 35,385
1 day prior 2022-12-08 92.9 435.79 809,942 809,934 871,685 35,345
2 days prior 2022-12-07 92.8 435.77 809,236 809,228 871,685 35,330
1 week prior 2022-12-02 92.8 435.76 808,883 808,875 871,685 35,322
1 month prior 2022-11-09 86.3 434.12 751,941 751,933 871,685 34,150
3 months prior 2022-09-09 86.7 434.22 755,359 755,351 871,685 34,217
6 months prior 2022-06-09 93.9 436.03 818,449 818,441 871,685 35,540
1 year prior 2021-12-09 92.6 435.71 807,118 807,110 871,685 35,283
*

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 2022-12-10 02:15 435.84 437.50 -1.66
1 hour prior 2022-12-10 01:15 435.86 437.50 -1.64
2 hours prior 2022-12-10 00:15 435.85 437.50 -1.65
6 hours prior 2022-12-09 20:15 435.84 437.50 -1.66
12 hours prior 2022-12-09 14:15 435.84 437.50 -1.66
24 hours prior 2022-12-09 02:15 435.83 437.50 -1.67
48 hours prior 2022-12-08 02:15 435.75 437.50 -1.75
*

Data is provisional and subject to revision.

Additional Information

Impoundment date 1960-01-01
Gauge USGS:08017400
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

Lake Location