Lost Creek Reservoir: 87.8% full as of 2026-09-23

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 2026-09-23 87.8 1,005.54 10,498 10,498 11,950 - n.a. -
Yesterday 2026-09-22 87.9 1,005.56 10,504 10,504 11,950 - n.a. -
2 days ago 2026-09-21 88.0 1,005.58 10,511 10,511 11,950 - n.a. -
1 week ago 2026-09-16 88.3 1,005.71 10,554 10,554 11,950 - n.a. -
1 month ago 2026-08-23 90.3 1,006.41 10,789 10,789 11,950 - n.a. -
3 months ago 2026-06-23 95.5 1,008.21 11,409 11,409 11,950 - n.a. -
6 months ago 2026-03-23 93.4 1,007.53 11,164 11,164 11,950 - n.a. -
1 year ago 2025-09-23 97.9 1,008.89 11,694 11,694 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 2026-09-23 16:15 1,005.53 1,009.50 -3.97
1 hour prior 2026-09-23 15:15 1,005.53 1,009.50 -3.97
2 hours prior 2026-09-23 14:15 1,005.53 1,009.50 -3.97
6 hours prior 2026-09-23 10:15 1,005.53 1,009.50 -3.97
12 hours prior 2026-09-23 04:15 1,005.54 1,009.50 -3.96
24 hours prior 2026-09-22 16:15 1,005.56 1,009.50 -3.94
48 hours prior 2026-09-21 16:15 1,005.58 1,009.50 -3.92
*

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