Lake Tawakoni: 88.3% full as of 2024-12-21

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 2024-12-21 88.3 434.64 769,791 769,783 871,685 34,504
Yesterday 2024-12-20 88.5 434.68 771,171 771,163 871,685 34,532
2 days ago 2024-12-19 88.4 434.67 770,826 770,818 871,685 34,525
1 week ago 2024-12-14 87.9 434.53 765,999 765,991 871,685 34,428
1 month ago 2024-11-21 89.1 434.85 777,051 777,043 871,685 34,651
3 months ago 2024-09-21 93.9 436.04 818,805 818,797 871,685 35,548
6 months ago 2024-06-21 100.0 438.27 900,484 871,685 871,685 - n.a. -
1 year ago 2023-12-21 96.9 436.77 844,986 844,978 871,685 36,199
*

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 2024-12-21 05:15 434.63 437.50 -2.87
1 hour prior 2024-12-21 04:15 434.64 437.50 -2.86
2 hours prior 2024-12-21 03:15 434.64 437.50 -2.86
6 hours prior 2024-12-20 23:15 434.64 437.50 -2.86
12 hours prior 2024-12-20 17:15 434.67 437.50 -2.83
24 hours prior 2024-12-20 05:15 434.68 437.50 -2.82
48 hours prior 2024-12-19 05:15 434.68 437.50 -2.82
*

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