Lake Tawakoni: 100.0% full as of 2023-03-28

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 2023-03-28 100.0 437.81 883,205 871,685 871,685 - n.a. -
Yesterday 2023-03-27 100.0 437.79 882,459 871,685 871,685 - n.a. -
2 days ago 2023-03-26 100.0 437.81 883,205 871,685 871,685 - n.a. -
1 week ago 2023-03-21 100.0 437.78 882,087 871,685 871,685 - n.a. -
1 month ago 2023-02-28 100.0 438.03 891,441 871,685 871,685 - n.a. -
3 months ago 2022-12-28 96.1 436.57 837,766 837,758 871,685 36,010
6 months ago 2022-09-28 85.1 433.83 742,065 742,057 871,685 33,956
1 year ago 2022-03-28 90.5 435.20 789,222 789,214 871,685 34,900
*

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 2023-03-28 12:15 437.79 437.50 0.29
1 hour prior 2023-03-28 11:15 437.83 437.50 0.33
2 hours prior 2023-03-28 10:15 437.78 437.50 0.28
6 hours prior 2023-03-28 06:15 437.80 437.50 0.30
12 hours prior 2023-03-28 00:15 437.76 437.50 0.26
24 hours prior 2023-03-27 12:15 437.79 437.50 0.29
48 hours prior 2023-03-26 12:15 437.81 437.50 0.31
*

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