Clark Lake
Livingston County, WisconsinLimited DataMesotrophic
Clark Lake is a mesotrophic lake in Livingston County, MI. Water quality is graded B based on 1 sampling years through 2022. The lake supports 20 documented fish species including Black bullhead, Blackchin shiner, and Blacknose shiner. Compared to the 19 other monitored lakes in Livingston County, Clark Lake ranks #5 for water quality.
Source: EPA Water Quality Portal sampling records, local state DNR records, last sampled 2022-09-08. 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 12 ft. Trophic State Index: 41.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 12 ft | B |
| Phosphorus | No data | |
| Chlorophyll-a (Algae) | No data | |
| Trophic State Index (TSI) | 41 | 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 Clark Lake (14-day solunar calendar)
→ Is it safe to eat fish from Clark Lake? (mercury & PFAS guide)
→ Clark Lake fishing regulations (limits, seasons, special rules)
Location
County Ranking
Ranked #5 of 20 lakes in Livingston County
Cleaner Lakes Within 30 Miles
Clark Lake holds Grade B. One nearby lake has a higher grade.
See full comparison →Nearby Lakes in Livingston County
More Wisconsin Lake Rankings
Other Grade B Lakes in Wisconsin
Lapeer County · Clarity: 9.5 ft
Manistee County · Clarity: 11 ft
Lake County · Clarity: 14 ft
Cass County · Clarity: 10.5 ft
Genesee County · Clarity: 10 ft
Lake County · Clarity: 8 ft
Mesotrophic Lakes in Wisconsin
EPA Impairment Status
Clark Lake is officially listed as impaired under Clean Water Act §303(d) in the 2024 EPA reporting cycle (IR category 4A).
Causes of impairment
A Total Maximum Daily Load (TMDL) plan has been approved.
Source: EPA ATTAINS assessment unit MI040900050111-03 · Official waterbody report · Matched by proximity (2.98 km)
Data Sources
Water quality data from the EPA Water Quality Portal
Impairment status from EPA ATTAINS 303(d) database
Grading methodology based on Metropolitan Council standards
Most recent sample: 2022-09-08
Monitoring stations: 1