Prosser Creek Reservoir Water Level

California · Prosser Creek

5,722.00ft
Reading: Sep 10, 2026
19.20 ft below full pool
5660 ft5741.2 ft (full)
Full pool
5741.2 ft
Vs full pool
−19.20 ft
Managed by
U.S. Bureau of Reclamation
Recent high
5,964.35 ft (2026)
Recent low
5,592.56 ft (2020)

Water level history

Loading water level history…
Source: U.S. Army Corps of Engineers (CWMS). Provisional data, subject to revision.

About Prosser Creek Reservoir

Prosser Creek Reservoir is a reservoir on the Prosser Creek in California, operated by U.S. Bureau of Reclamation. Its full summer pool sits at 5741.2 ft above sea level. Live water levels come from the U.S. Army Corps of Engineers (CWMS) and update hourly.

Understanding Prosser Creek Reservoir's water level

"Full pool" is the elevation U.S. Bureau of Reclamation targets when Prosser Creek Reservoir is completely filled — 5741.2 feet above sea level. That is the elevation Prosser Creek Reservoir reaches at the top of a good runoff year, not a level it is held at. Reservoirs like this one fill from winter storms and snowmelt and are then drawn down deliberately through the dry season, so the gap between today's reading and 5741.2 ft is normally the season rather than a shortage. Judge it against the same week last year, not against full.

Prosser Creek Reservoir climbs through winter and spring as storms and snowmelt come off the mountains, peaks around late spring, and falls steadily through summer and autumn as water goes downstream and flood space is reopened for the next winter. A wet winter can raise it dramatically; the low point almost always lands in autumn regardless.

The recent high and low above are drawn from the published history available for Prosser Creek Reservoir, so they show how today compares over that record rather than an all-time extreme. The 12-month and 5-year chart views make the trend and the lake's usual seasonal shape easy to see.

Prosser Creek Reservoir — frequently asked

What is the current water level of Prosser Creek Reservoir?

The gauge at the top of this page shows Prosser Creek Reservoir's current elevation in feet above sea level, updated from the U.S. Army Corps of Engineers (CWMS).

What is full pool for Prosser Creek Reservoir?

Prosser Creek Reservoir's full summer pool is 5741.2 feet above sea level. Levels are typically drawn down below that in winter for flood storage.

Who manages Prosser Creek Reservoir?

Prosser Creek Reservoir is operated by U.S. Bureau of Reclamation on the Prosser Creek.

Where is Prosser Creek Reservoir located?

Prosser Creek Reservoir is in California, on the Prosser Creek.

Why is Prosser Creek Reservoir low right now?

Reservoir levels fall during dry spells and seasonal drawdown — when U.S. Bureau of Reclamation lowers the pool for flood storage, power, or water supply — and recover after rain and snowmelt. The history chart above shows the recent trend.

What are the record high and low levels for Prosser Creek Reservoir?

The recent record high and low elevations are shown in the stats on this page, computed from the available published history for Prosser Creek Reservoir.

Other lakes near Prosser Creek Reservoir

See current levels for all 29 California lakes and reservoirs →

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