Moss Lake is 97.5% full as of 2016-07-29

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)
Most recent 2016-07-29 97.5 714.44 23,554 23,457 24,058 1,066
1 day prior 2016-07-28 97.6 714.46 23,575 23,478 24,058 1,067
2 days prior 2016-07-27 97.6 714.46 23,575 23,478 24,058 1,067
1 week prior 2016-07-22 98.0 714.56 23,682 23,585 24,058 1,069
1 month prior 2016-06-29 98.6 714.69 23,821 23,724 24,058 1,072
3 months prior 2016-04-29 93.8 713.60 22,667 22,570 24,058 1,046
6 months prior 2016-01-29 99.5 714.88 24,025 23,928 24,058 1,077
1 year prior 2015-07-29 98.5 714.66 23,789 23,692 24,058 1,072
*

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 2016-07-30 01:15 714.42 715.0 -0.6 below flood pool
1 hour prior 2016-07-30 00:15 714.42 715.0 -0.6 below flood pool
2 hours prior 2016-07-29 23:15 714.42 715.0 -0.6 below flood pool
6 hours prior 2016-07-29 19:15 714.43 715.0 -0.6 below flood pool
12 hours prior 2016-07-29 13:15 714.44 715.0 -0.6 below flood pool
24 hours prior 2016-07-29 01:15 714.45 715.0 -0.5 below flood pool
48 hours prior 2016-07-28 01:15 714.46 715.0 -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