Upper Whitefish Lake is a cold, clear oligotrophic lake in Flathead County, Montana. Water quality is graded A based on 2 sampling years through 2023. Compared to the 79 other monitored lakes in Flathead County, Upper Whitefish Lake ranks #55 for water quality.
Source: EPA Water Quality Portal sampling records, Montana DNR, last sampled 2023-07-20. Grade methodology: LakeGrade methodology.
Watch Upper Whitefish Lake 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
No clarity data. Phosphorus level: 4.1 µg/L. Chlorophyll-a: 0.7 µg/L. Trophic State Index: 26.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | No data | |
| Phosphorus | 4.1 µg/L | A |
| Chlorophyll-a (Algae) | 0.7 µg/L | A |
| Trophic State Index (TSI) | 26 | Oligotrophic |
Low nutrients, clear water, excellent for swimming
Where to stay near Upper Whitefish Lake
Compare lakeside cabins, hotels, and vacation rentals near Upper Whitefish Lake in Flathead 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 Upper Whitefish Lake
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 Upper Whitefish Lake?
Get lake water-quality report cards plus the best cabin & lodging deals near Upper Whitefish Lake — straight to your inbox. No spam, unsubscribe anytime.
Fishing Upper Whitefish Lake
Location
County Ranking
Ranked #55 of 80 lakes in Flathead County
Nearby Lakes in Flathead County
Explore Upper Whitefish Lake 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: 2023-07-20
Monitoring stations: 1