Parry Sound District County, Ontario · Water Quality Report Card
Crawford Lake
Crawford Lake in Parry Sound District, Ontario received a water quality grade of D (Poor). Water clarity: 1.9 m visibility.
- Clarity
- 1.9 m
- Type
- Eutrophic
Crawford Lake is a productive, nutrient-rich eutrophic lake in Parry Sound District County, Ontario. Water quality is graded D based on 1 sampling years through 2017. Compared to the 230 other monitored lakes in Parry Sound District County, Crawford Lake ranks #228 for water quality.
Source: EPA Water Quality Portal sampling records, Ontario MECP, last sampled 2017-10-04. Grade methodology: LakeGrade methodology.
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Swimming Safety
Swimming not recommended, poor water quality with high algae risk
Water Quality Grade: D, Poor
Murky, only visible to about 6.2 ft. Trophic State Index: 51.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 1.9 m | D |
| Phosphorus | No data | |
| Chlorophyll-a (Algae) | No data | |
| Trophic State Index (TSI) | 51 | Eutrophic |
High nutrients, frequent algae, reduced clarity
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Fishing Crawford Lake
Location
County Ranking
Ranked #228 of 231 lakes in Parry Sound District
Cleaner Lakes Within 30 Miles
Crawford Lake holds Grade D. 4 nearby lakes hold higher grades.
- ABells LakeParry Sound District · 3.4 mi · Two grade letters higher (D → A)
- ANeighick LakeParry Sound District · 1.9 mi · Two grade letters higher (D → A)
- BAhmic LakeParry Sound District · 4 mi · Two grade letters higher (D → B)
- BWhitestone LakeParry Sound District · 6.4 mi · Two grade letters higher (D → B)
Nearby Lakes in Parry Sound District
Explore Crawford Lake across LakeGrade
More Ontario Lake Rankings
Other Grade D Lakes in Ontario
Eutrophic Lakes in Ontario
More records, surveys & data sources
Where this data comes from
Measurements for Crawford 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: 2017-10-04
Monitoring stations: