Soap Lake
Grant County, Washington844 acresView mapDirections
No nutrient or algae sampling on record from Washington Ecology for this lake.
Soap Lake in Grant County, Washington has water-quality measurements published by Washington Ecology, shown here as reported. Surface area: 844 acres.
Soap Lake is a 844-acre lake in Grant County, Washington.
Source: EPA Water Quality Portal sampling records, WA Ecology. Methodology: how these readings are compared.
Swimming conditions
No readingNot rated
Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
Whether Soap Lake is safe to swim in today is a call for the Washington State Department of Ecology and the county health department, who post current advisories. LakeQuality does not issue swimming clearances.
Water quality measurements for Soap Lake
These are the measurements Washington Ecology publishes for Soap Lake, shown as reported. The condition class beside each reading is the EPA National Lakes Assessment class for this lake’s ecoregion.
No clarity data. TSI undefined.
Ask about Soap Lake
Answers come straight from the public measurements and survey records on this page.
→ Soap Lake water level: the live USGS gauge reading
Lake Details
Surface area
844 acres
Shoreline
5.8 mi
No bathymetric survey has been published for Soap Lake, so its depth is not documented here.
Stays via Stay22
Stays near Soap Lake
Compare lakeside cabins, hotels, and vacation rentals near Soap Lake in Grant County, Washington — live availability and prices for your trip. Switch the map to Satellite to see the lake and how close each stay is to the water.
Top-rated places to stay near Soap Lake
Prices for Oct 16–18, 4 adults. Change dates on the map below.
Availability and prices from Stay22 partners (Booking.com, Vrbo, Expedia). We may earn a commission from bookings, at no extra cost to you.
Planning a whole trip? See where to stay at Washington’s top lakes →
Follow Soap Lake’s readings
Email me when new measurements post for this lake. Updates stay free.
Or email
Fishing Soap Lake
Nearby Lakes in Grant County
Frequently asked questions about Soap Lake
Where is Soap Lake?
- Soap Lake is a lake in Grant County, Washington. Its water-quality measurements are published by Washington Ecology and shown on this page as reported.
What is the water quality of Soap Lake?
- Soap Lake in Grant County, Washington has water-quality measurements published by Washington Ecology, shown here as reported. Surface area: 844 acres.
Is Soap Lake safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
Explore Soap Lake across LakeQuality
More lakes in Washington
Other Lakes in Washington
Where this data comes from
Measurements for Soap Lake come from the EPA Water Quality Portal. Per-sample source details are not recorded for this lake.