Recent changes

2013-01-25: The rating curve for Lake Lavon has been updated and replaced with the most recent data from the TWDB Hydrosurvey Program.

Lavon Lake: 80.4% full as of 2018-09-21

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)
Most recent 2018-09-21 80.4 487.93 329,904 326,932 406,388 17,964
1 day prior 2018-09-20 80.5 487.94 330,083 327,111 406,388 17,971
2 days prior 2018-09-19 80.6 487.97 330,623 327,651 406,388 17,991
1 week prior 2018-09-14 80.5 487.94 330,083 327,111 406,388 17,971
1 month prior 2018-08-21 82.2 488.32 336,962 333,990 406,388 18,238
3 months prior 2018-06-21 94.9 490.99 388,747 385,775 406,388 20,262
6 months prior 2018-03-21 100.0 494.39 459,379 406,388 406,388 - n.a. -
1 year prior 2017-09-21 97.0 491.40 397,078 394,106 406,388 20,380
*

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 2018-09-21 23:00 488.38 492.0 -3.6 below flood pool
1 hour prior 2018-09-21 22:00 488.35 492.0 -3.6 below flood pool
2 hours prior 2018-09-21 21:00 488.14 492.0 -3.9 below flood pool
6 hours prior 2018-09-21 17:00 487.95 492.0 -4.1 below flood pool
12 hours prior 2018-09-21 11:00 487.92 492.0 -4.1 below flood pool
24 hours prior 2018-09-20 23:00 487.93 492.0 -4.1 below flood pool
48 hours prior 2018-09-19 23:00 487.96 492.0 -4.0 below flood pool
*

Data is provisional and subject to revision.

Additional Information

Impoundment date 1953-01-01
Vertical datum NGVD29
Gauge USGS:08060500
Dead pool elevation 453.0 ft above NGVD29
Service spillway crest elevation 475.5 ft above NGVD29
Top of flood gate elevation 503.5 ft above NGVD29
Emergency spillway crest elevation 503.5 ft above NGVD29
Flood pool elevation 503.5 ft above NGVD29
Maximum design elevation 509.0 ft above NGVD29
Top of dam elevation 514.0 ft above NGVD29
Conservation pool elevation
ending 1975-12-01
472.0 ft above NGVD29
Conservation pool elevation
starting 1975-12-01
492.0 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

Lake Location