How Clean Is Big Lake?
Big Lake is among the cleanest lakes in Minnesota. Its nutrient and algae readings come from EPA monitoring data. Water clarity (Secchi depth): 8.2 ft. Phosphorus: 14 µg/L. Chlorophyll-a (algae): 4.9 µg/L. Trophic State Index: 45.
Cleanliness Snapshot
| Metric | Big Lake | Minnesota avg |
|---|---|---|
| Water Clarity (Secchi) | 8.2 ft | — |
| Phosphorus | 14 µg/L | <30 = clean |
| Chlorophyll-a (Algae) | 4.9 µg/L | <10 = clean |
| Trophic State Index | 45 | <50 = clean |
How does Big Lake compare?
Big Lake's readings match or beat the Minnesota state average. It ranks #1 of 68 lakes in St. Louis County on nutrient and algae readings.
Stays via Stay22
Where to stay near Big Lake
Compare cabins, hotels, and vacation rentals near Big Lake in St. Louis 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 Big Lake
Prices for Oct 9–11, 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 Big Lake?
Get lake water-quality updates plus the best cabin & lodging deals near Big Lake — straight to your inbox. No spam, unsubscribe anytime.
Watch Big Lake water quality
Get an email when the clarity or algae readings change. Unsubscribe anytime.