Roche Harbor Lake
San Juan County, Washington30 acresView mapDirections
No nutrient or algae sampling on record from Washington Ecology for this lake.
Roche Harbor Lake in San Juan County, Washington has water-quality measurements published by Washington Ecology, shown here as reported. Surface area: 30 acres.
Roche Harbor Lake is a 30-acre lake in San Juan 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 Roche Harbor 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 Roche Harbor Lake
These are the measurements Washington Ecology publishes for Roche Harbor 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 Roche Harbor Lake
Answers come straight from the public measurements and survey records on this page.
Lake Details
Surface area
30 acres
No bathymetric survey has been published for Roche Harbor Lake, so its depth is not documented here.
Stays via Stay22
Stays near Roche Harbor Lake
Compare lakeside cabins, hotels, and vacation rentals near Roche Harbor Lake in San Juan 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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Frequently asked questions about Roche Harbor Lake
Where is Roche Harbor Lake?
- Roche Harbor Lake is a lake in San Juan County, Washington. Its water-quality measurements are published by Washington Ecology and shown on this page as reported.
What is the water quality of Roche Harbor Lake?
- Roche Harbor Lake in San Juan County, Washington has water-quality measurements published by Washington Ecology, shown here as reported. Surface area: 30 acres.
Is Roche Harbor 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 Roche Harbor Lake come from the EPA Water Quality Portal. Per-sample source details are not recorded for this lake.