Whitney Lake: 74.1% full as of 2022-10-02

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)
Today 2022-10-02 74.1 525.77 410,818 409,959 553,344 17,157
Yesterday 2022-10-01 74.1 525.78 410,989 410,130 553,344 17,163
2 days ago 2022-09-30 74.2 525.80 411,332 410,473 553,344 17,174
1 week ago 2022-09-25 74.5 525.91 413,225 412,366 553,344 17,235
1 month ago 2022-09-02 74.7 525.97 414,260 413,401 553,344 17,270
3 months ago 2022-07-02 81.7 528.12 452,854 451,995 553,344 18,649
6 months ago 2022-04-02 90.6 530.61 501,914 501,055 553,344 20,936
1 year ago 2021-10-02 92.2 531.04 511,001 510,142 553,344 21,312
*

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 2022-10-02 09:15 525.77 533.00 -7.23 below flood pool
1 hour prior 2022-10-02 08:15 525.77 533.00 -7.23 below flood pool
2 hours prior 2022-10-02 07:15 525.77 533.00 -7.23 below flood pool
6 hours prior 2022-10-02 03:15 525.77 533.00 -7.23 below flood pool
12 hours prior 2022-10-01 21:15 525.77 533.00 -7.23 below flood pool
24 hours prior 2022-10-01 09:15 525.80 533.00 -7.20 below flood pool
48 hours prior 2022-09-30 09:15 525.81 533.00 -7.19 below flood pool
*

Data is provisional and subject to revision.

Additional Information

Impoundment date 1951-01-01
Gauge USGS:08092500
Vertical datum NGVD29
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