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: 88.7% full as of 2017-02-25

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, while 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 2017-02-25 88.7 489.73 363,469 360,497 406,388 19,550
Yesterday 2017-02-24 88.6 489.70 362,885 359,913 406,388 19,386
2 days ago 2017-02-23 88.3 489.65 361,918 358,946 406,388 19,338
1 week ago 2017-02-18 87.3 489.43 357,686 354,714 406,388 19,134
1 month ago 2017-01-25 86.3 489.22 353,687 350,715 406,388 18,948
3 months ago 2016-11-25 84.4 488.81 345,988 343,016 406,388 18,609
6 months ago 2016-08-25 91.3 490.25 373,830 370,858 406,388 20,055
1 year ago 2016-02-25 100.0 493.32 436,766 406,388 406,388 - n.a. -
*

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 2017-02-25 09:00 489.69 492.0 -2.3 below flood pool
1 hour prior 2017-02-25 08:00 489.69 492.0 -2.3 below flood pool
2 hours prior 2017-02-25 07:00 489.69 492.0 -2.3 below flood pool
6 hours prior 2017-02-25 03:00 489.72 492.0 -2.3 below flood pool
12 hours prior 2017-02-24 21:00 489.71 492.0 -2.3 below flood pool
24 hours prior 2017-02-24 09:00 489.74 492.0 -2.3 below flood pool
48 hours prior 2017-02-23 09:00 489.65 492.0 -2.4 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 ft above NGVD29
Service spillway crest elevation 475.5 ft above NGVD29
Conservation pool elevation
ending 1975-12-01
472 ft above NGVD29
Conservation pool elevation
starting 1975-12-01
492 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 ft above NGVD29
Top of dam elevation 514 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