Loon Lake Outlet
Cook County, MinnesotaView mapDirections
No nutrient or algae sampling on record from Minnesota PCA for this lake.
- Limited data
Loon Lake Outlet in Cook County, Minnesota has water-quality measurements published by Minnesota PCA, shown here as reported.
Loon Lake Outlet is a lake in Cook County, Minnesota. Overall water quality is improving over recent sampling years.
Source: EPA Water Quality Portal sampling records, Minnesota DNR LakeFinder, last sampled 2020-07-20. Methodology: how these readings are compared.
Swimming conditions
No readingLimited data
Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
Whether Loon Lake Outlet 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 Loon Lake Outlet
These are the measurements Minnesota PCA publishes for Loon Lake Outlet, shown as reported. The condition class beside each reading is the EPA National Lakes Assessment class for this lake’s ecoregion.
No clarity data.
Ask about Loon Lake Outlet
Answers come straight from the public measurements and survey records on this page.
Stays via Stay22
Stays near Loon Lake Outlet
Compare lakeside cabins, hotels, and vacation rentals near Loon Lake Outlet in Cook County, Minnesota — live availability and prices for your trip. Switch the map to Satellite to see the lake and how close each stay is to the water.
Top-rated places to stay near Loon Lake Outlet
Prices for Nov 6–8, 4 adults. Change dates on the map below.
Availability and prices from Stay22 partners (Booking.com, Vrbo, Expedia). We may earn a commission from bookings, at no extra cost to you.
Planning a whole trip? See where to stay at Minnesota’s top lakes →
Follow Loon Lake Outlet’s readings
Email me when new measurements post for this lake. Updates stay free.
Or email
Fishing Loon Lake Outlet
Water quality readings over time
3 seasons of samples on record (2020–2024). Calling a direction takes at least 4 years of the same measurement.
Water clarity
Stable2 years
Phosphorus
Improving-3.18 µg/L/yr3 years
Chlorophyll-a
Improving-0.38 µg/L/yr3 years
Nearby Lakes in Cook County
Frequently asked questions about Loon Lake Outlet
Where is Loon Lake Outlet?
- Loon Lake Outlet is a lake in Cook County, Minnesota. Its water-quality measurements are published by Minnesota PCA and shown on this page as reported.
What is the water quality of Loon Lake Outlet?
- Loon Lake Outlet in Cook County, Minnesota has water-quality measurements published by Minnesota PCA, shown here as reported.
Is Loon Lake Outlet safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
Explore Loon Lake Outlet across LakeQuality
Fish species and the cleanest lakes across Minnesota
Fish species and best lakes in Cook County
Species activity outlook by water temperature and season
Where to stay at Minnesota's top lakes, each with its readings
Lakes in the Lake Superior Basin (MN+WI), ranked by water quality
Minnesota's cleanest lakes, ranked on agency measurements
More lakes in Minnesota
State Parks Near Loon Lake Outlet
Other Lakes in Minnesota
Where this data comes from
1 measurement from 1 monitoring station, 2020. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- 21GPBCH - Grand Portage Beaches (Tribal)
21GPBCH1 sample · 2020
Analytical methods
- Turbidity by Nephelometry
Monitoring station identifiers (1)
EPA condition classes from the National Lakes Assessment (EPA 841-R-24-006, Table 6-3), applied by ecoregion. See where the data comes from and data sources.