South Branch Lake
Penobscot County, Maine1,983 acresView mapDirections
No nutrient or algae sampling on record from Maine DEP for this lake.
- 28 ft max depth
South Branch Lake in Penobscot County, Maine has water-quality measurements published by Maine DEP, shown here as reported. Maximum depth: 28 ft. Surface area: 1983 acres.
South Branch Lake is a 1,983-acre lake in Penobscot County, Maine with a maximum depth of 28 feet (11-foot average).
Source: EPA Water Quality Portal sampling records, your state environmental agency. Methodology: how these readings are compared.
What South Branch Lake is good for
From access and monitoring records, not editorial picks.
- Big water1,983 acres
Swimming conditions
No readingNot rated
Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
Whether South Branch Lake 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 South Branch Lake
These are the measurements Maine DEP publishes for South Branch 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 South Branch Lake
Answers come straight from the public measurements and survey records on this page.
Lake Details
Max depth
28 ft
Average depth
11 ft
Surface area
1,983 acres
Shoreline
12.6 mi
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Fishing South Branch Lake
Nearby Lakes in Penobscot County
Frequently asked questions about South Branch Lake
Where is South Branch Lake?
- South Branch Lake is a lake in Penobscot County, Maine. Its water-quality measurements are published by Maine DEP and shown on this page as reported.
What is the water quality of South Branch Lake?
- South Branch Lake in Penobscot County, Maine has water-quality measurements published by Maine DEP, shown here as reported. Maximum depth: 28 ft. Surface area: 1983 acres.
Is South Branch Lake safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
How deep is South Branch Lake?
- South Branch Lake has a maximum depth of 28 feet and an average depth of 11 feet. The lake covers 1983 acres.
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Where this data comes from
Measurements for South Branch Lake come from the EPA Water Quality Portal. Per-sample source details are not recorded for this lake.