Seeley Lake North Basin is a cold, clear oligotrophic lake in Missoula County, Montana. Water quality is graded A based on 1 sampling years through 2021. Compared to the 59 other monitored lakes in Missoula County, Seeley Lake North Basin ranks #11 for water quality.
Source: EPA Water Quality Portal sampling records, Montana DNR, last sampled 2021-03-09. Grade methodology: LakeGrade methodology.
Watch Seeley Lake North Basin water quality
Subscribe for LakeQuality updates by email. No spam, unsubscribe anytime.
Swimming Safety
Excellent for swimming, crystal clear water with minimal algae
Water Quality Grade: A, Excellent
Crystal clear, you can see 16.8 ft down. Trophic State Index: 37.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 16.8 ft | A |
| Phosphorus | No data | |
| Chlorophyll-a (Algae) | No data | |
| Trophic State Index (TSI) | 37 | Oligotrophic |
Low nutrients, clear water, excellent for swimming
Where to stay near Seeley Lake North Basin
Compare lakeside cabins, hotels, and vacation rentals near Seeley Lake North Basin in Missoula County, Montana — 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 Seeley Lake North Basin
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 Seeley Lake North Basin?
Get lake water-quality report cards plus the best cabin & lodging deals near Seeley Lake North Basin — straight to your inbox. No spam, unsubscribe anytime.
Fishing Seeley Lake North Basin
Location
County Ranking
Ranked #11 of 60 lakes in Missoula County
Nearby Lakes in Missoula County
Explore Seeley Lake North Basin across LakeGrade
More Montana Lake Rankings
Other Grade A Lakes in Montana
Oligotrophic Lakes in Montana
More records, surveys & data sources
Data Sources
Water quality data from the EPA Water Quality Portal
Grading methodology based on Metropolitan Council standards
Most recent sample: 2021-03-09
Monitoring stations: 1