Big Pine Island Lake is a mesotrophic lake in Kent County, Michigan. Water quality is graded C based on 1 sampling years through 2022. Water clarity is improving over recent sampling years. Compared to the 17 other monitored lakes in Kent County, Big Pine Island Lake ranks #11 for water quality.
Source: EPA Water Quality Portal sampling records, Michigan DNR, last sampled 2022-09-18. Grade methodology: LakeGrade methodology.
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Swimming Safety
Generally safe for swimming, moderate water quality
Water Quality Grade: C, Fair
Moderate clarity, visible to about 9.5 ft. Trophic State Index: 45.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 9.5 ft | C |
| Phosphorus | No data | |
| Chlorophyll-a (Algae) | No data | |
| Trophic State Index (TSI) | 45 | Mesotrophic |
Moderate nutrients, good water quality
Where to stay near Big Pine Island Lake
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Fishing Big Pine Island Lake
Water Quality Trend: → Stable
Based on 3 years of monitoring data (2020-2025).
| Metric | Trend | Change/Year | Years |
|---|---|---|---|
| Water Clarity | ↑ Improving | +2.535 m/yr | 3 |
| Chlorophyll-a | ↓ Declining | +3 µg/L/yr | 2 |
Location & Depth Map
Free interactive depth-contour map of Big Pine Island Lake, reaching a maximum surveyed depth of 40 ft. Toggle Depth contours to overlay the bathymetric survey lines. Contour data from Michigan DNR.
County Ranking
Ranked #11 of 18 lakes in Kent County
Cleaner Lakes Within 30 Miles
Big Pine Island Lake holds Grade C. 3 nearby lakes hold higher grades.
Nearby Lakes in Kent County
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Where to stay at Michigan's top lakes, each with its grade
Moderate nutrients, good water quality
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Other Grade C Lakes in Michigan
Montcalm County · Clarity: 9 ft
Montcalm County · Clarity: 9.5 ft
Allegan County · Clarity: 8 ft
Allegan County · Clarity: 8 ft
Ottawa County · Clarity: 4 ft
Mecosta County · Clarity: 8.5 ft
Mesotrophic Lakes in Michigan
More records, surveys & data sources
Lake Size & Watershed
Size, shoreline, and watershed area from HydroLAKES (HydroSHEDS). Mean depth is a modeled estimate.
Data Sources
Water quality data from the EPA Water Quality Portal
Lake size & watershed from HydroLAKES (HydroSHEDS)
Grading methodology based on Metropolitan Council standards
Most recent sample: 2022-09-18
Monitoring stations: 1