Moss Lake: 97.6% full as of 2017-07-22

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 2017-07-22 97.6 714.46 23,575 23,478 24,058 1,067
Yesterday 2017-07-21 97.7 714.48 23,596 23,499 24,058 1,067
2 days ago 2017-07-20 97.8 714.51 23,628 23,531 24,058 1,068
1 week ago 2017-07-15 98.3 714.62 23,746 23,649 24,058 1,071
1 month ago 2017-06-22 98.7 714.72 23,853 23,756 24,058 1,073
3 months ago 2017-04-22 99.6 714.91 24,058 23,961 24,058 1,084
6 months ago 2017-01-22 99.6 714.91 24,058 23,961 24,058 1,084
1 year ago 2016-07-22 98.0 714.56 23,682 23,585 24,058 1,069
*

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 2017-07-22 11:15 714.46 715.0 -0.5 below flood pool
1 hour prior 2017-07-22 10:15 714.46 715.0 -0.5 below flood pool
2 hours prior 2017-07-22 09:15 714.46 715.0 -0.5 below flood pool
6 hours prior 2017-07-22 05:15 714.46 715.0 -0.5 below flood pool
12 hours prior 2017-07-21 23:15 714.47 715.0 -0.5 below flood pool
24 hours prior 2017-07-21 11:15 714.49 715.0 -0.5 below flood pool
48 hours prior 2017-07-20 11:15 714.52 715.0 -0.5 below flood pool
*

Data is provisional and subject to revision.

Additional Information

Impoundment date 1966-01-01
Vertical datum NGVD29
Gauge USGS:07315950
Dead pool elevation 666.0 ft above NGVD29
Service spillway crest elevation 715 ft above NGVD29
Conservation pool elevation 715.0 ft above NGVD29
Emergency spillway crest elevation 725 ft above NGVD29
Top of dam elevation 740.0 ft above NGVD29
Top of dam elevation 741.0 ft above NGVD29
Data download (CSV) period of record, last one year, last 30 days

Elevation-Area-Capacity Curves

1966-01-01 (source: usgs)
1999-05-01 (source: twdb) : GIS Data

Lake Location