Is Koronis Lake Safe for Swimming?
Koronis Lake in Stearns County, Minnesota has nutrient and algae measurements on record from state and federal monitoring. A water-quality reading is not a swimming clearance. The state water agency and county health departments post current advisories; check them before you swim.. Water clarity: 6 ft visibility. Phosphorus: 27 µg/L. Chlorophyll-a (algae): 13.8 µg/L. Always check local health department advisories before swimming.
Key Metrics
| Metric | Value |
|---|---|
| Water Clarity (Secchi Depth) | 6 ft |
| Phosphorus | 27 μg/L |
| Chlorophyll-a (Algae) | 13.8 μg/L |
| Maximum Depth | 132 ft |
| Location | Stearns County, Minnesota |
How does Koronis Lake compare?
On nutrient and algae readings, Koronis Lake matches or beats the Minnesota state average. It ranks #11 of 32 lakes in Stearns County on nutrient and algae readings.
Water clarity (Secchi depth) sits at 6 feet. That puts the lake in good clarity range, with limited algae interference. Algae levels (chlorophyll-a) measure 13.8 µg/L — moderate; acceptable for swimming on most days, but worth checking advisories.
Stays via Stay22
Where to stay near Koronis Lake
Compare cabins, hotels, and vacation rentals near Koronis Lake in Stearns County, Minnesota. Live availability and prices for your nights. Switch the map to Satellite to see how close each stay is to the water.
Top-rated places to stay near Koronis Lake
Prices for Oct 30–Nov 1, 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 trip to Koronis Lake?
Get lake water-quality updates plus the best cabin & lodging deals near Koronis Lake — straight to your inbox. No spam, unsubscribe anytime.
Watch Koronis Lake water quality
Get an email when the clarity or algae readings change. Unsubscribe anytime.