Mainstream Pond
Somerset County, Maine92 acresView mapDirections
No nutrient or algae sampling on record from Maine DEP for this lake.
Mainstream Pond in Somerset County, Maine has water-quality measurements published by Maine DEP, shown here as reported. Surface area: 92 acres.
Mainstream Pond is a 92-acre lake in Somerset County, Maine.
Source: EPA Water Quality Portal sampling records, your state environmental agency. 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 Mainstream Pond is safe to swim in today is a call for the Maine Department of Environmental Protection and the county health department, who post current advisories. LakeQuality does not issue swimming clearances.
Water quality measurements for Mainstream Pond
These are the measurements Maine DEP publishes for Mainstream Pond, 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 Mainstream Pond
Answers come straight from the public measurements and survey records on this page.
Lake Details
Surface area
92 acres
Shoreline
2 mi
No bathymetric survey has been published for Mainstream Pond, so its depth is not documented here.
Stays via Stay22
Stays near Mainstream Pond
Compare lakeside cabins, hotels, and vacation rentals near Mainstream Pond in Somerset County, Maine — 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 Mainstream Pond
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.
Follow Mainstream Pond’s readings
Email me when new measurements post for this lake. Updates stay free.
Or email
Fishing Mainstream Pond
Nearby Lakes in Somerset County
Frequently asked questions about Mainstream Pond
Where is Mainstream Pond?
- Mainstream Pond is a lake in Somerset County, Maine. Its water-quality measurements are published by Maine DEP and shown on this page as reported.
What is the water quality of Mainstream Pond?
- Mainstream Pond in Somerset County, Maine has water-quality measurements published by Maine DEP, shown here as reported. Surface area: 92 acres.
Is Mainstream Pond safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
Explore Mainstream Pond across LakeQuality
More lakes in Maine
Other Lakes in Maine
Where this data comes from
Measurements for Mainstream Pond come from the EPA Water Quality Portal. Per-sample source details are not recorded for this lake.