Birch Lake
Cass County, WisconsinLimited DataMesotrophic
Birch Lake is a mesotrophic lake in Cass County, MI. Water quality is graded B based on 1 sampling years through 2022. The lake supports 2 documented fish species including Lake herring and Ninespine stickleback. Compared to the 22 other monitored lakes in Cass County, Birch Lake ranks #7 for water quality.
Source: EPA Water Quality Portal sampling records, local state DNR records, last sampled 2022-09-23. 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 13 ft. Trophic State Index: 40.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 13 ft | B |
| Phosphorus | No data | |
| Chlorophyll-a (Algae) | No data | |
| Trophic State Index (TSI) | 40 | Mesotrophic |
Moderate nutrients, good water quality
Fish Species
Click a species to see all Wisconsin and Minnesota lakes where it is found.
→ Best fishing times for Birch Lake (14-day solunar calendar)
→ Is it safe to eat fish from Birch Lake? (mercury & PFAS guide)
→ Birch Lake fishing regulations (limits, seasons, special rules)
Location
County Ranking
Ranked #7 of 23 lakes in Cass County
Cleaner Lakes Within 30 Miles
Birch Lake holds Grade B. One nearby lake has a higher grade.
See full comparison →Nearby Lakes in Cass 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
Genesee County · Clarity: 10 ft
Lake County · Clarity: 8 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: 2022-09-23
Monitoring stations: 1