How Clean Is Portage Lake?
Portage Lake does not have enough monitoring data to describe. It does not have enough recent summer sampling for a nutrient or algae figure. That means the measurements are missing, not that the water is poor. Everything the monitoring record does contain is below. Water clarity (Secchi depth): 12.5 ft. Trophic State Index: 41.
Cleanliness Snapshot
| Metric | Portage Lake | Michigan avg |
|---|---|---|
| Water Clarity (Secchi) | 12.5 ft | — |
| Trophic State Index | 41 | <50 = clean |
How does Portage Lake compare?
Portage Lake has too little recent summer sampling to compare, so it is not compared with the Michigan state average. Multi-year monitoring data shows water quality is declining based on 9 years of records.
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