Grass Lake
Cass County, Minnesota114 acresView mapDirections
No nutrient or algae sampling on record from Minnesota PCA for this lake.
- 10 ft max depth
Grass Lake in Cass County, Minnesota has water-quality measurements published by Minnesota PCA, shown here as reported. Maximum depth: 9.8 ft. Surface area: 114 acres.
Grass Lake is a 114-acre lake in Cass County, Minnesota with a maximum depth of 10 feet.
Source: EPA Water Quality Portal sampling records, Minnesota DNR LakeFinder. 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 Grass Lake is safe to swim in today is a call for the Minnesota Pollution Control Agency and the Minnesota DNR and the county health department, who post current advisories. LakeQuality does not issue swimming clearances.
Water quality measurements for Grass Lake
These are the measurements Minnesota PCA publishes for Grass 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 Grass Lake
Answers come straight from the public measurements and survey records on this page.
Lake Details
Max depth
9.8 ft
Surface area
114 acres
Shoreline
2.1 mi
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Fishing Grass Lake
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Frequently asked questions about Grass Lake
Where is Grass Lake?
- Grass Lake is a lake in Cass County, Minnesota. Its water-quality measurements are published by Minnesota PCA and shown on this page as reported.
What is the water quality of Grass Lake?
- Grass Lake in Cass County, Minnesota has water-quality measurements published by Minnesota PCA, shown here as reported. Maximum depth: 9.8 ft. Surface area: 114 acres.
Is Grass Lake safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
How deep is Grass Lake?
- Grass Lake has a maximum depth of 9.8 feet. The lake covers 114 acres.
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Where this data comes from
Measurements for Grass Lake come from the EPA Water Quality Portal. Per-sample source details are not recorded for this lake.
Other records on this page
Lake details from Minnesota DNR LakeFinder