Big Lake
Missoula County, Montana38 acresView mapDirections
No nutrient or algae sampling on record from Montana DEQ for this lake.
- 136 ft max depth
Big Lake in Missoula County, Montana has water-quality measurements published by Montana DEQ, shown here as reported. Maximum depth: 136 ft. Surface area: 38 acres.
Big Lake is a 38-acre lake in Missoula County, Montana with a maximum depth of 136 feet.
Source: EPA Water Quality Portal sampling records, Montana DEQ. Methodology: how these readings are compared.
What Big Lake is good for
From access and monitoring records, not editorial picks.
- Deep water136 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 Big 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 Big Lake
These are the measurements Montana DEQ publishes for Big 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 Big Lake
Answers come straight from the public measurements and survey records on this page.
Lake Details
Max depth
136 ft
Surface area
38 acres
Shoreline
0.9 mi
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Fishing Big Lake
Nearby Lakes in Missoula County
Frequently asked questions about Big Lake
Where is Big Lake?
- Big Lake is a lake in Missoula County, Montana. Its water-quality measurements are published by Montana DEQ and shown on this page as reported.
What is the water quality of Big Lake?
- Big Lake in Missoula County, Montana has water-quality measurements published by Montana DEQ, shown here as reported. Maximum depth: 136 ft. Surface area: 38 acres.
Is Big Lake safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
How deep is Big Lake?
- Big Lake has a maximum depth of 136 feet. The lake covers 38 acres.
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Where this data comes from
Measurements for Big Lake come from the EPA Water Quality Portal. Per-sample source details are not recorded for this lake.