Kenora District County, Ontario · Water Quality Report Card
Willis Lake
Willis Lake in Kenora District, Ontario received a water quality grade of C (Fair). Water clarity: 1.8 m visibility. Phosphorus: 25.8 µg/L.
- Clarity
- 1.8 m
- Type
- Eutrophic
Willis Lake is a productive, nutrient-rich eutrophic lake in Kenora District County, Ontario. Water quality is graded C based on 2 sampling years through 2015. Compared to the 341 other monitored lakes in Kenora District County, Willis Lake ranks #310 for water quality.
Source: EPA Water Quality Portal sampling records, Ontario MECP, last sampled 2015-05-21. Grade methodology: LakeGrade methodology.
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Swimming Safety
Generally safe for swimming, moderate water quality
Water Quality Grade: C, Fair
Murky, only visible to about 5.7 ft. Phosphorus level: 25.8 µg/L. Trophic State Index: 51.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 1.75 m | D |
| Phosphorus | 25.8 µg/L | B |
| Chlorophyll-a (Algae) | No data | |
| Trophic State Index (TSI) | 51 | Eutrophic |
High nutrients, frequent algae, reduced clarity
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Fishing Willis Lake
Location
County Ranking
Ranked #310 of 342 lakes in Kenora District
Cleaner Lakes Within 30 Miles
Willis Lake holds Grade C. One nearby lake has a higher grade.
See full comparison →Nearby Lakes in Kenora District
Explore Willis Lake across LakeGrade
More Ontario Lake Rankings
Other Grade C Lakes in Ontario
Eutrophic Lakes in Ontario
More records, surveys & data sources
Where this data comes from
Measurements for Willis 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: 2015-05-21
Monitoring stations: