Moss Lake: 100.0% full as of 2020-01-17

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 2020-01-17 100.0 715.57 24,774 24,058 24,058 - n.a. -
1 day prior 2020-01-16 100.0 715.17 24,339 24,058 24,058 - n.a. -
2 days prior 2020-01-15 100.0 715.24 24,415 24,058 24,058 - n.a. -
1 week prior 2020-01-10 100.0 715.99 25,236 24,058 24,058 - n.a. -
1 month prior 2019-12-17 98.9 714.76 23,896 23,799 24,058 1,074
3 months prior 2019-10-17 96.5 714.21 23,309 23,212 24,058 1,061
6 months prior 2019-07-17 99.1 714.79 23,928 23,831 24,058 1,075
1 year prior 2019-01-17 100.0 715.12 24,284 24,058 24,058 - n.a. -
*

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 2020-01-17 23:15 715.79 715.00 0.79 into flood pool
1 hour prior 2020-01-17 22:15 715.79 715.00 0.79 into flood pool
2 hours prior 2020-01-17 21:15 715.78 715.00 0.78 into flood pool
6 hours prior 2020-01-17 17:15 715.72 715.00 0.72 into flood pool
12 hours prior 2020-01-17 11:15 715.64 715.00 0.64 into flood pool
24 hours prior 2020-01-16 23:15 715.30 715.00 0.30 into flood pool
48 hours prior 2020-01-15 23:15 715.18 715.00 0.18 into 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 666.00 ft above NGVD29
Service spillway crest elevation 715.00 ft above NGVD29
Emergency spillway crest elevation 725.00 ft above NGVD29
Top of dam elevation 741.00 ft above NGVD29
Conservation pool elevation 715.00 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