Whitney Lake is 87.0% full as of 2016-09-29

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 2016-09-29 87.0 529.66 482,497 481,638 553,344 19,933
Yesterday 2016-09-28 86.8 529.59 481,104 480,245 553,344 19,861
2 days ago 2016-09-27 86.5 529.52 479,716 478,857 553,344 19,791
1 week ago 2016-09-22 84.4 528.91 467,815 466,956 553,344 19,244
1 month ago 2016-08-29 93.4 531.36 517,860 517,001 553,344 21,554
3 months ago 2016-06-29 100.0 543.88 846,125 553,344 553,344 - n.a. -
6 months ago 2016-03-29 100.0 533.17 558,086 553,344 553,344 - n.a. -
1 year ago 2015-09-29 90.2 530.52 500,034 499,175 553,344 20,847
*

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 2016-09-29 13:15 529.68 533.0 -3.3 below flood pool
1 hour prior 2016-09-29 12:15 529.68 533.0 -3.3 below flood pool
2 hours prior 2016-09-29 11:15 529.68 533.0 -3.3 below flood pool
6 hours prior 2016-09-29 07:15 529.67 533.0 -3.3 below flood pool
12 hours prior 2016-09-29 01:15 529.63 533.0 -3.4 below flood pool
24 hours prior 2016-09-28 13:15 529.59 533.0 -3.4 below flood pool
48 hours prior 2016-09-27 13:15 529.53 533.0 -3.5 below flood pool
*

Data is provisional and subject to revision.

Additional Information

Impoundment date 1951-01-01
Vertical datum NGVD29
Gauge USGS:08092500
Dead pool elevation 448.83 ft above NGVD29
Service spillway crest elevation 533 ft above NGVD29
Conservation pool elevation 533.0 ft above NGVD29
Top of flood gate elevation 571 ft above NGVD29
Emergency spillway crest elevation 571 ft above NGVD29
Flood pool elevation 571 ft above NGVD29
Maximum design elevation 573 ft above NGVD29
Top of dam elevation 584 ft above NGVD29
Data download (CSV) period of record, last one year, last 30 days

Elevation-Area-Capacity Curves

2005-06-01 (source: twdb) : GIS Data