How Clean Is Clark Lake?
Clark Lake does not have enough monitoring data to grade. Its EPA monitoring record does not meet the evidence bar for a letter grade, so it is published unrated — that is an absence of evidence, not a poor result. The measurements below are what the record does contain.
Cleanliness Snapshot
| Metric | Clark Lake | Minnesota avg |
|---|---|---|
| Overall Grade | NR | C |
How does Clark Lake compare?
Clark Lake is not rated for water quality — its monitoring record does not meet the evidence bar, so it is not compared with the Minnesota state average. Multi-year monitoring data shows water quality is declining based on 4 years of records.