Lake Fork Reservoir: 98.6% full as of 2025-08-13

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 2025-08-13 98.6 402.67 627,813 596,370 605,061 26,145
Yesterday 2025-08-12 98.6 402.68 628,074 596,631 605,061 26,156
2 days ago 2025-08-11 98.7 402.71 628,859 597,416 605,061 26,189
1 week ago 2025-08-06 99.4 402.86 632,801 601,358 605,061 26,366
1 month ago 2025-07-13 100.0 403.38 646,649 605,061 605,061 - n.a. -
3 months ago 2025-05-13 100.0 403.38 646,649 605,061 605,061 - n.a. -
6 months ago 2025-02-13 100.0 403.29 644,231 605,061 605,061 - n.a. -
1 year ago 2024-08-13 97.2 402.35 619,500 588,057 605,061 25,818
*

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 2025-08-13 14:45 402.67 403.00 -0.33
1 hour prior 2025-08-13 13:45 402.68 403.00 -0.32
2 hours prior 2025-08-13 12:45 402.67 403.00 -0.33
6 hours prior 2025-08-13 08:45 402.68 403.00 -0.32
12 hours prior 2025-08-13 02:45 402.67 403.00 -0.33
24 hours prior 2025-08-12 14:45 402.68 403.00 -0.32
48 hours prior 2025-08-11 14:45 402.72 403.00 -0.28
*

Data is provisional and subject to revision.

Additional Information

Impoundment date 1980-01-01
Vertical datum NGVD29
Dead pool elevation 360.00 ft above NGVD29
Top of gate elevation 405.00 ft above NGVD29
Emergency spillway crest elevation 385.00 ft above NGVD29
Maximum design elevation 407.90 ft above NGVD29
Top of dam elevation 419.50 ft above NGVD29
Conservation pool elevation 403.00 ft above NGVD29
Data download (CSV) period of record, last one year, last 30 days

Elevation-Area-Capacity Curves

1980-01-01 (source: USGS)
2002-09-30 (source: USGS)
2009-10-01 (source: TWDB) : GIS Data
Data Source USGS:08018800

Lake Location