Dewey Lake
Carbon County, Montana38 acresView mapDirections
No nutrient or algae sampling on record from Montana DEQ for this lake.
- 95 ft max depth
Dewey Lake in Carbon County, Montana has water-quality measurements published by Montana DEQ, shown here as reported. Maximum depth: 95 ft. Surface area: 38 acres.
Dewey Lake is a 38-acre lake in Carbon County, Montana with a maximum depth of 95 feet (41-foot average).
Source: EPA Water Quality Portal sampling records, Montana DEQ. Methodology: how these readings are compared.
What Dewey Lake is good for
From access and monitoring records, not editorial picks.
- Deep water95 ft surveyed max depth
Swimming conditions
No readingNot rated
Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
Whether Dewey Lake is safe to swim in today is a call for the Montana Department of Environmental Quality and the county health department, who post current advisories. LakeQuality does not issue swimming clearances.
Water quality measurements for Dewey Lake
These are the measurements Montana DEQ publishes for Dewey 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 Dewey Lake
Answers come straight from the public measurements and survey records on this page.
Lake Details
Max depth
95 ft
Average depth
41 ft
Surface area
38 acres
Shoreline
1.2 mi
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Stays near Dewey Lake
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Fishing Dewey Lake
Nearby Lakes in Carbon County
Frequently asked questions about Dewey Lake
Where is Dewey Lake?
- Dewey Lake is a lake in Carbon County, Montana. Its water-quality measurements are published by Montana DEQ and shown on this page as reported.
What is the water quality of Dewey Lake?
- Dewey Lake in Carbon County, Montana has water-quality measurements published by Montana DEQ, shown here as reported. Maximum depth: 95 ft. Surface area: 38 acres.
Is Dewey Lake safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
How deep is Dewey Lake?
- Dewey Lake has a maximum depth of 95 feet and an average depth of 41 feet. The lake covers 38 acres.
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Where this data comes from
Measurements for Dewey Lake come from the EPA Water Quality Portal. Per-sample source details are not recorded for this lake.