Whitney Lake: 90.7% full as of 2020-10-19

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 2020-10-19 90.7 530.65 502,753 501,894 553,344 20,974
1 day prior 2020-10-18 90.6 530.61 501,914 501,055 553,344 20,936
2 days prior 2020-10-17 90.7 530.64 502,543 501,684 553,344 20,965
1 week prior 2020-10-12 92.1 531.01 510,362 509,503 553,344 21,288
1 month prior 2020-09-19 100.0 533.54 566,609 553,344 553,344 - n.a. -
3 months prior 2020-07-19 94.4 531.61 523,271 522,412 553,344 21,738
6 months prior 2020-04-19 98.9 532.74 548,308 547,449 553,344 22,577
1 year prior 2019-10-19 77.3 526.78 428,450 427,591 553,344 17,787
*

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 2020-10-19 23:15 530.62 533.00 -2.38 below flood pool
1 hour prior 2020-10-19 22:15 530.62 533.00 -2.38 below flood pool
2 hours prior 2020-10-19 21:15 530.63 533.00 -2.37 below flood pool
6 hours prior 2020-10-19 17:15 530.65 533.00 -2.35 below flood pool
12 hours prior 2020-10-19 11:15 530.65 533.00 -2.35 below flood pool
24 hours prior 2020-10-18 23:15 530.67 533.00 -2.33 below flood pool
48 hours prior 2020-10-17 23:15 530.62 533.00 -2.38 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 533.00 ft above NGVD29
Top of flood gate elevation 571.00 ft above NGVD29
Emergency spillway crest elevation 571.00 ft above NGVD29
Flood pool elevation 571.00 ft above NGVD29
Maximum design elevation 573.00 ft above NGVD29
Top of dam elevation 584.00 ft above NGVD29
Conservation pool elevation 533.00 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

Lake Location