Grant Lake
Okanogan County, Washington25 acresView mapDirections
No nutrient or algae sampling on record from Washington Ecology for this lake.
Grant Lake in Okanogan County, Washington has water-quality measurements published by Washington Ecology, shown here as reported. Surface area: 25 acres.
Grant Lake is a 25-acre lake in Okanogan 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 Grant 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 Grant Lake
These are the measurements Washington Ecology publishes for Grant 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 Grant Lake
Answers come straight from the public measurements and survey records on this page.
Lake Details
Surface area
25 acres
Shoreline
0.9 mi
No bathymetric survey has been published for Grant Lake, so its depth is not documented here.
Stays via Stay22
Stays near Grant Lake
Compare lakeside cabins, hotels, and vacation rentals near Grant Lake in Okanogan 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.
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Fishing Grant Lake
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Frequently asked questions about Grant Lake
Where is Grant Lake?
- Grant Lake is a lake in Okanogan County, Washington. Its water-quality measurements are published by Washington Ecology and shown on this page as reported.
What is the water quality of Grant Lake?
- Grant Lake in Okanogan County, Washington has water-quality measurements published by Washington Ecology, shown here as reported. Surface area: 25 acres.
Is Grant Lake safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
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Where this data comes from
Measurements for Grant Lake come from the EPA Water Quality Portal. Per-sample source details are not recorded for this lake.