Lavon Lake: 91.6% full as of 2025-01-20

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 2025-01-20 91.6 490.31 378,344 375,503 409,757 19,943
Yesterday 2025-01-19 91.8 490.34 378,942 376,101 409,757 19,954
2 days ago 2025-01-18 91.7 490.32 378,543 375,702 409,757 19,947
1 week ago 2025-01-13 91.0 490.19 375,894 373,053 409,757 19,877
1 month ago 2024-12-20 84.5 488.82 349,036 346,195 409,757 19,321
3 months ago 2024-10-20 82.2 488.33 339,626 336,785 409,757 19,087
6 months ago 2024-07-20 100.0 493.28 439,455 409,757 409,757 21,302
1 year ago 2024-01-20 91.4 490.26 377,347 374,506 409,757 19,924
*

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 2025-01-20 15:00 490.30 492.00 -1.70 below flood pool
1 hour prior 2025-01-20 14:00 490.30 492.00 -1.70 below flood pool
2 hours prior 2025-01-20 13:00 490.30 492.00 -1.70 below flood pool
6 hours prior 2025-01-20 09:00 490.30 492.00 -1.70 below flood pool
12 hours prior 2025-01-20 03:00 490.31 492.00 -1.69 below flood pool
24 hours prior 2025-01-19 15:00 490.33 492.00 -1.67 below flood pool
48 hours prior 2025-01-18 15:00 490.34 492.00 -1.66 below flood pool
*

Data is provisional and subject to revision.

Additional Information

Impoundment date 1953-01-01
Vertical datum NGVD29
Dead pool elevation 453.00 ft above NGVD29
Service spillway crest elevation 475.50 ft above NGVD29
Top of flood gate elevation 503.50 ft above NGVD29
Emergency spillway crest elevation 503.50 ft above NGVD29
Flood pool elevation 503.50 ft above NGVD29
Maximum design elevation 509.00 ft above NGVD29
Top of dam elevation 514.00 ft above NGVD29
Conservation pool elevation
End date: 1975-12-01 		472.00 ft above NGVD29
Conservation pool elevation
Start date: 1975-12-01 		492.00 ft above NGVD29
Data download (CSV) period of record, last one year, last 30 days

Elevation-Area-Capacity Curves

2011-07-01 (source: TWDB) : GIS Data
2021-07-01 (source: TWDB) : GIS Data
Data Source USGS:08060500

Lake Location