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 is 86.2% full as of 2016-09-25

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.

Date Percent Full Mean Water Level
(ft)
Reservoir Storage
(acre-ft)
Conservation Storage
(acre-ft)
Conservation Capacity
(acre-ft)
Surface Area
(acres)
Today 2016-09-25 86.2 489.20 353,308 350,336 406,388 18,931
Yesterday 2016-09-24 86.2 489.19 353,119 350,147 406,388 18,922
2 days ago 2016-09-23 86.4 489.24 354,066 351,094 406,388 18,966
1 week ago 2016-09-18 87.5 489.48 358,643 355,671 406,388 19,179
1 month ago 2016-08-25 91.3 490.26 374,031 371,059 406,388 20,058
3 months ago 2016-06-25 100.0 495.34 479,756 406,388 406,388 - n.a. -
6 months ago 2016-03-25 100.0 492.94 428,821 406,388 406,388 21,150
1 year ago 2015-09-25 85.6 489.08 351,043 348,071 406,388 18,829
*

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 2016-09-25 20:00 489.30 492.0 -2.7 below flood pool
1 hour prior 2016-09-25 19:00 489.30 492.0 -2.7 below flood pool
2 hours prior 2016-09-25 18:00 489.29 492.0 -2.7 below flood pool
6 hours prior 2016-09-25 14:00 489.24 492.0 -2.8 below flood pool
12 hours prior 2016-09-25 08:00 489.17 492.0 -2.8 below flood pool
24 hours prior 2016-09-24 20:00 489.18 492.0 -2.8 below flood pool
48 hours prior 2016-09-23 20:00 489.23 492.0 -2.8 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