Potholes Reservoir

Name: Potholes Reservoir (Washington) water level
Creator: U.S. Bureau of Reclamation

Washington · Reclamation gauge

Grey bar: 12-month range 1,027.8–1,046.6 ft.

Water level · NAVD88

1,033.60FT

Storage 113,631 acre-feet

The source publishes no % full figure.

7 days +1.15 ft30 days +4.83 ft

Reading for Oct 24, 2026 · page refreshed Oct 25, 20:24 UTC
Source: U.S. Bureau of Reclamation (RISE)

Worth going today?This Afternoon

Looks good

Light wind, dry

Wind2 mph

Rain2%

Temp57°F

Level1,033.6 ft

This AfternoonMostly Cloudy · 57°F
N 2 mph · rain 2%

TonightMostly Cloudy then Slight Chance Rain Showers · 40°F
N 3 to 8 mph · rain 22%

NWS forecast for the gauge location. Good = wind ≤ 10 mph and rain ≤ 30%; storms are flagged. Not safety advice – check local conditions, closures and warnings.

Level history

30 days1 year

Field notes

As of Oct 24, 2026, Potholes Reservoir stood at 1,033.60 (NAVD88) ft.

Reclamation reports storage of 113,631 acre-feet for the same day.

Over the past 7 days the lake has been rising (+1.15 ft), and it is +4.83 ft over 30 days.

Readings come from the Bureau of Reclamation's daily reservoir data for Potholes Reservoir and O'Sullivan Dam (POT).

Lake facts

Storage (latest)	113,631 acre-feet
Gauge / station	Potholes Reservoir and O'Sullivan Dam (POT)
Elevation datum	ft (NAVD88)
Gauge location	46.9831, -119.2755

Nearby lakes

Moses Lake9 mi N1,046.64 ft−0.12 ft Scooteney Reservoir25 mi SE911.89 ft−4.53 ft Soap Lake31 mi N1,068.33 ft±0.00 ft Billy Clapp Lake32 mi N1,325.14 ft−7.95 ft Lenore Lake38 mi N1,076.62 ft−0.02 ft

Common questions

Is Potholes Reservoir rising or falling?

Over the last 7 days it changed +1.15 ft and over 30 days +4.83 ft.

How full is Potholes Reservoir?

Reclamation publishes the water surface elevation for this gauge but not a percent-full figure, so we don't show one rather than estimate it.

How often is this page updated?

The page is rebuilt automatically every day from Reclamation's published data. Values can be revised later by the source agency.

Where does the data come from?

The U.S. Bureau of Reclamation's RISE data portal (data.usbr.gov). Forecasts come from the National Weather Service.

Daily values published by the Bureau of Reclamation; provisional and subject to revision. Reclamation data are provisional and subject to revision unless otherwise noted. This page is not affiliated with or endorsed by the Bureau of Reclamation. See data sources.