Big Pine Island Lake
Kent County, Michigan194 acresView mapDirections
Clarity, phosphorus, and algae all sit in the cleanest band for this region.
↑ up from B at the last regrade
- Mesotrophic
- #3 of 10 in the county
- 40 ft max depth
- Public access
Big Pine Island Lake in Kent County, Michigan has a water quality grade of A (Excellent). Water clarity: 9.3 ft visibility. Phosphorus: 18.5 µg/L. Chlorophyll-a (algae): 3.5 µg/L. Maximum depth: 40 ft. Surface area: 194.4 acres.
- Clarity
- 9.3 ft
- Max depth
- 40 ft
- Area
- 194 acres
- Type
- Mesotrophic
- Trend
- ↓ Declining
- Public access
- Yes
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Watch Big Pine Island Lake’s letter
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Big Pine Island Lake is a 194-acre mesotrophic lake in Kent County, Michigan with a maximum depth of 40 feet. Water quality is graded A based on 2 sampling years through 2023. Overall water quality is declining over recent sampling years. Limited fish-species data available. Public access is available. Compared to the 9 other monitored lakes in Kent County, Big Pine Island Lake ranks #3 for water quality.
Source: EPA Water Quality Portal sampling records, EGLE, last sampled 2023-09-16. Grade methodology: LakeQuality methodology.
What Big Pine Island Lake is good for
From access and monitoring records, not editorial picks.
- Deep water40 ft surveyed max depth
Swimming Safety
Grade onlyLow algae
Based on clarity and algae grades from past sampling — we do not hold live water temperature and a current cyanobacteria reading for this lake. Check your state or county health department before you swim.
The A is nutrients and algae, not a swimming clearance. Check local advisories before you swim.
Water Quality Grade: A (Excellent)
Moderate clarity, visible to about 9.3 ft. Phosphorus 18.5 µg/L. Chlorophyll-a 3.5 µg/L. TSI 45. The letter is not a swimming clearance.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 9.3 ft | Not graded |
| Phosphorus | 18.5 µg/L | Good |
| Chlorophyll-a (Algae) | 3.5 µg/L | Good |
| Trophic State Index (TSI) | 45 | Mesotrophic |
Moderate nutrients, good water quality
Lake Details
| Characteristic | Value |
|---|---|
| Maximum Depth | 40 ft |
| Surface Area | 194 acres |
| Public Access | Yes |
Fishing Big Pine Island Lake
Water Quality Trend: ↓ Declining
Based on 7 years of monitoring data (2020-2025).
| Metric | Trend | Change/Year | Years |
|---|---|---|---|
| Water Clarity | ↑ Improving | +0.665 m/yr | 7 |
| Phosphorus | ↓ Declining | +1.12 µg/L/yr | 7 |
| Chlorophyll-a | ↓ Declining | +0.12 µg/L/yr | 7 |
County Ranking
Ranked #3 of 10 lakes in Kent County
Nearby Lakes in Kent County
Frequently asked questions about Big Pine Island Lake
Where is Big Pine Island Lake?
- Big Pine Island Lake is a lake in Kent County, Michigan. LakeQuality grades it A for nutrients and algae. The letter is not a swimming clearance.
What is the water quality grade for Big Pine Island Lake?
- Big Pine Island Lake in Kent County, Michigan has a water quality grade of A (Excellent). Water clarity: 9.3 ft visibility. Phosphorus: 18.5 µg/L. Chlorophyll-a (algae): 3.5 µg/L. Maximum depth: 40 ft. Surface area: 194.4 acres.
Is Big Pine Island Lake safe to swim in?
- The A is nutrients and algae, not a swimming clearance. Check local advisories before you swim.
How deep is Big Pine Island Lake?
- Big Pine Island Lake has a maximum depth of 40 feet. The lake covers 194.4 acres.
Explore Big Pine Island Lake across LakeQuality
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Where this data comes from
131 measurements from 1 monitoring station, 2016–2023. Retrieved from the EPA Water Quality Portal on 2026-08-26.
Collected and reported by
- Michigan EGLE - MiCorps
21MICH_MICORPS131 samples · 2016–2023
Analytical methods
- Phosphorus by Colorimetry
- 445.0 ~ EPA; Chlorophyll and Pheophytin in Algae by Fluorescence
Monitoring station identifiers (1)
Grade thresholds from the EPA National Lakes Assessment (EPA 841-R-24-006, Table 6-3), applied by ecoregion. See how grades are calculated and data sources.