Upper Grinnell Lake
Glacier County, Montana101 acresView mapDirections
No nutrient or algae sampling on record from Montana DEQ for this lake.
Upper Grinnell Lake in Glacier County, Montana has water-quality measurements published by Montana DEQ, shown here as reported. Surface area: 101 acres.
Upper Grinnell Lake is a 101-acre lake in Glacier County, Montana.
Source: EPA Water Quality Portal sampling records, Montana DEQ. 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 Upper Grinnell 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 Upper Grinnell Lake
These are the measurements Montana DEQ publishes for Upper Grinnell 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.
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Answers come straight from the public measurements and survey records on this page.
Lake Details
Surface area
101 acres
No bathymetric survey has been published for Upper Grinnell Lake, so its depth is not documented here.
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Frequently asked questions about Upper Grinnell Lake
Where is Upper Grinnell Lake?
- Upper Grinnell Lake is a lake in Glacier County, Montana. Its water-quality measurements are published by Montana DEQ and shown on this page as reported.
What is the water quality of Upper Grinnell Lake?
- Upper Grinnell Lake in Glacier County, Montana has water-quality measurements published by Montana DEQ, shown here as reported. Surface area: 101 acres.
Is Upper Grinnell Lake safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
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Where this data comes from
Measurements for Upper Grinnell Lake come from the EPA Water Quality Portal. Per-sample source details are not recorded for this lake.