Thunder Bay District County, Ontario · Water Quality Report Card
Crevasse Lake
Crevasse Lake in Thunder Bay District, Ontario received a water quality grade of A (Excellent). Water clarity: 4.2 m visibility. Phosphorus: 6.9 µg/L.
- Clarity
- 4.2 m
- Type
- Oligotrophic
Crevasse Lake is a cold, clear oligotrophic lake in Thunder Bay District County, Ontario. Water quality is graded A based on 2 sampling years through 2008. Compared to the 301 other monitored lakes in Thunder Bay District County, Crevasse Lake ranks #83 for water quality.
Source: EPA Water Quality Portal sampling records, Ontario MECP, last sampled 2008-05-29. Grade methodology: LakeGrade methodology.
Watch Crevasse 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
Good clarity, visible to about 13.8 ft. Phosphorus level: 6.9 µg/L. Trophic State Index: 36.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 4.2 m | B |
| Phosphorus | 6.9 µg/L | A |
| Chlorophyll-a (Algae) | No data | |
| Trophic State Index (TSI) | 36 | Oligotrophic |
Low nutrients, clear water, excellent for swimming
Where to stay near Crevasse Lake
Compare lakeside cabins, hotels, and vacation rentals near Crevasse Lake in Thunder Bay District, Ontario — 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 Crevasse 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 Crevasse Lake?
Get lake water-quality report cards plus the best cabin & lodging deals near Crevasse Lake — straight to your inbox. No spam, unsubscribe anytime.
Fishing Crevasse Lake
Location
County Ranking
Ranked #83 of 302 lakes in Thunder Bay District
Nearby Lakes in Thunder Bay District
Explore Crevasse Lake across LakeGrade
More Ontario Lake Rankings
Other Grade A Lakes in Ontario
Oligotrophic Lakes in Ontario
More records, surveys & data sources
Where this data comes from
Measurements for Crevasse Lake come from the EPA Water Quality Portal. Per-sample source details are not recorded for this lake.
Data Sources
Water quality data from the EPA Water Quality Portal
Grade thresholds from the EPA National Lakes Assessment (EPA 841-R-24-006, Table 6-3), applied by ecoregion
Most recent sample: 2008-05-29
Monitoring stations: