Lost Creek Reservoir: 91.0% full as of 2026-08-15

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 2026-08-15 91.0 1,006.67 10,876 10,876 11,950 - n.a. -
Yesterday 2026-08-14 91.1 1,006.70 10,886 10,886 11,950 - n.a. -
2 days ago 2026-08-13 91.2 1,006.75 10,903 10,903 11,950 - n.a. -
1 week ago 2026-08-08 91.7 1,006.93 10,963 10,963 11,950 - n.a. -
1 month ago 2026-07-15 93.8 1,007.67 11,211 11,211 11,950 - n.a. -
3 months ago 2026-05-15 95.7 1,008.28 11,438 11,438 11,950 - n.a. -
6 months ago 2026-02-15 93.6 1,007.61 11,190 11,190 11,950 - n.a. -
1 year ago 2025-08-15 99.7 1,009.42 11,916 11,916 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 2026-08-15 19:15 1,006.66 1,009.50 -2.84
1 hour prior 2026-08-15 18:15 1,006.65 1,009.50 -2.85
2 hours prior 2026-08-15 17:15 1,006.66 1,009.50 -2.84
6 hours prior 2026-08-15 13:15 1,006.67 1,009.50 -2.83
12 hours prior 2026-08-15 07:15 1,006.67 1,009.50 -2.83
24 hours prior 2026-08-14 19:15 1,006.69 1,009.50 -2.81
48 hours prior 2026-08-13 19:15 1,006.73 1,009.50 -2.77
*

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

Historical Rating Curve
Data Source USGS:08042820
USGS Monitoring Location USGS:08042820

Lake Location