Lost Creek Reservoir: 95.4% full as of 2026-04-25

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 2026-04-25 95.4 1,008.19 11,401 11,401 11,950 - n.a. -
Yesterday 2026-04-24 95.4 1,008.19 11,401 11,401 11,950 - n.a. -
2 days ago 2026-04-23 95.3 1,008.16 11,388 11,388 11,950 - n.a. -
1 week ago 2026-04-18 94.9 1,008.06 11,346 11,346 11,950 - n.a. -
1 month ago 2026-03-25 93.4 1,007.52 11,160 11,160 11,950 - n.a. -
3 months ago 2026-01-25 93.7 1,007.63 11,197 11,197 11,950 - n.a. -
6 months ago 2025-10-25 96.5 1,008.49 11,526 11,526 11,950 - n.a. -
1 year ago 2025-04-25 100.0 1,010.89 12,532 11,950 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 2026-04-25 06:15 1,008.19 1,009.50 -1.31
1 hour prior 2026-04-25 05:15 1,008.19 1,009.50 -1.31
2 hours prior 2026-04-25 04:15 1,008.19 1,009.50 -1.31
6 hours prior 2026-04-25 00:15 1,008.19 1,009.50 -1.31
12 hours prior 2026-04-24 18:15 1,008.19 1,009.50 -1.31
24 hours prior 2026-04-24 06:15 1,008.18 1,009.50 -1.32
48 hours prior 2026-04-23 06:15 1,008.15 1,009.50 -1.35
*

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