Skip to main content
LakeQuality

Outlet of Onamia Lake on the Rum River is among the cleanest lakes in Minnesota. Its nutrient and algae readings come from EPA monitoring data. Phosphorus: 21.8 µg/L. Chlorophyll-a (algae): 0.6 µg/L. Trophic State Index: 37.

Cleanliness Snapshot

MetricOutlet of Onamia Lake on the Rum RiverMinnesota avg
Phosphorus21.8 µg/L<30 = clean
Chlorophyll-a (Algae)0.6 µg/L<10 = clean
Trophic State Index37<50 = clean

How does Outlet of Onamia Lake on the Rum River compare?

Outlet of Onamia Lake on the Rum River's readings match or beat the Minnesota state average. It ranks #3 of 9 lakes in Mille Lacs County on nutrient and algae readings. Multi-year monitoring data shows water quality is improving based on 2 years of records.

Stays via Stay22

Where to stay near Outlet of Onamia Lake on the Rum River

Compare cabins, hotels, and vacation rentals near Outlet of Onamia Lake on the Rum River in Mille Lacs 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 Outlet of Onamia Lake on the Rum River

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 trip to Outlet of Onamia Lake on the Rum River?

Get lake water-quality updates plus the best cabin & lodging deals near Outlet of Onamia Lake on the Rum River — straight to your inbox. No spam, unsubscribe anytime.

Watch Outlet of Onamia Lake on the Rum River water quality

Get an email when the clarity or algae readings change. Unsubscribe anytime.

More on Outlet of Onamia Lake on the Rum River