Big Crooked Lake South Basin; Grattan Township
Kent County, WisconsinLimited DataMesotrophic
Big Crooked Lake South Basin; Grattan Township is a mesotrophic lake in Kent County, MI. Water quality is graded B based on 1 sampling years through 2021. Compared to the 17 other monitored lakes in Kent County, Big Crooked Lake South Basin; Grattan Township ranks #3 for water quality.
Source: EPA Water Quality Portal sampling records, local state DNR records, last sampled 2021-09-18. Grade methodology: LakeGrade methodology.
Swimming Safety
Good for swimming, clear water with low algae levels
Water Quality Grade: B, Good
Good clarity, visible to about 11.5 ft. Trophic State Index: 42.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 11.5 ft | B |
| Phosphorus | No data | |
| Chlorophyll-a (Algae) | No data | |
| Trophic State Index (TSI) | 42 | Mesotrophic |
Moderate nutrients, good water quality
Location
County Ranking
Ranked #3 of 18 lakes in Kent County
Nearby Lakes in Kent County
More Wisconsin Lake Rankings
Other Grade B Lakes in Wisconsin
Lapeer County · Clarity: 9.5 ft
Livingston County · Clarity: 13 ft
Manistee County · Clarity: 11 ft
Lake County · Clarity: 14 ft
Cass County · Clarity: 10.5 ft
Genesee County · Clarity: 10 ft
Mesotrophic Lakes in Wisconsin
Data Sources
Water quality data from the EPA Water Quality Portal
Grading methodology based on Metropolitan Council standards
Most recent sample: 2021-09-18
Monitoring stations: 1