Lost Creek Reservoir: 98.4% full as of 2025-07-09

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 2025-07-09 98.4 1,009.03 11,753 11,753 11,950 - n.a. -
Yesterday 2025-07-08 98.2 1,009.00 11,740 11,740 11,950 - n.a. -
2 days ago 2025-07-07 98.3 1,009.01 11,744 11,744 11,950 - n.a. -
1 week ago 2025-07-02 98.5 1,009.08 11,774 11,774 11,950 - n.a. -
1 month ago 2025-06-09 99.5 1,009.37 11,895 11,895 11,950 - n.a. -
3 months ago 2025-04-09 97.4 1,008.77 11,644 11,644 11,950 - n.a. -
6 months ago 2025-01-09 99.3 1,009.30 11,866 11,866 11,950 - n.a. -
1 year ago 2024-07-09 97.4 1,008.75 11,635 11,635 11,950 - 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 2025-07-09 11:15 1,009.02 1,009.50 -0.48
1 hour prior 2025-07-09 10:15 1,009.02 1,009.50 -0.48
2 hours prior 2025-07-09 09:15 1,009.02 1,009.50 -0.48
6 hours prior 2025-07-09 05:15 1,009.03 1,009.50 -0.47
12 hours prior 2025-07-08 23:15 1,009.03 1,009.50 -0.47
24 hours prior 2025-07-08 11:15 1,009.00 1,009.50 -0.50
48 hours prior 2025-07-07 11:15 1,009.02 1,009.50 -0.48
*

Data is provisional and subject to revision.

Additional Information

Impoundment date 1991-01-01
Vertical datum NGVD29
Top of dam elevation 1,028.90 ft above NGVD29
Conservation pool elevation 1,009.50 ft above NGVD29
Data download (CSV) period of record, last one year, last 30 days

Elevation-Area-Capacity Curves

Data Source USGS:08042820

Lake Location