Bostwick Lake
Bostwick Lake in Kent County, Michigan is not rated for water quality — its monitoring record does not meet the evidence bar. Water clarity: 8.8 ft visibility. Maximum depth: 24 ft. Surface area: 213.2 acres.
- Clarity
- 8.8 ft
- Max depth
- 24 ft
- Area
- 213 acres
- Trend
- → Stable
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Why Bostwick Lake has no grade
We grade a lake only when the monitoring record supports a letter: at least three phosphorus or chlorophyll-a samples in the last ten years, scored against EPA National Lakes Assessment thresholds for this lake’s ecoregion. For Bostwick Lake, the only measurement available is water clarity, which is not a water-quality indicator on its own — EPA's National Lakes Assessment does not grade clarity. Sampling here has recorded water clarity, but not phosphorus and algae (chlorophyll-a).
Not Rated is not an F. It is EPA Integrated Reporting Category 3 — insufficient information. The water here may be excellent or poor; nobody has measured enough of it to say. Everything below that has been measured is still reported on this page.
Sampling is run by EGLE and volunteer programs, and published through the EPA Water Quality Portal. Read the full grading methodology.
Bostwick Lake is a 213-acre lake in Kent County, Michigan with a maximum depth of 24 feet. Phosphorus level is improving over recent sampling years.
Source: EPA Water Quality Portal sampling records, EGLE, last sampled 2017-09-13. Grade methodology: LakeQuality methodology.
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Swimming Safety
Not ratedLimited data
Not rated for swimming — there is not enough monitoring data to judge this lake
Water quality measurements for Bostwick Lake
These readings exist but are not enough for an A–F grade — see why.
Moderate clarity, visible to about 8.8 ft. Trophic State Index: 46.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 8.8 ft | Not graded |
| Phosphorus | No recent samples | |
| Chlorophyll-a (Algae) | No recent samples | |
| Trophic State Index (TSI) | 46 | Mesotrophic |
Moderate nutrients, good water quality
Where to stay near Bostwick Lake
Compare lakeside cabins, hotels, and vacation rentals near Bostwick Lake in Kent County, Michigan — live availability and prices for your trip. Switch the map to Satellite to see the lake and how close each stay is to the water.
Top-rated places to stay near Bostwick Lake
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Lake Details
| Characteristic | Value |
|---|---|
| Maximum Depth | 24 ft |
| Surface Area | 213 acres |
Fishing Bostwick Lake
Water Quality Trend: → Stable
Based on 2 years of monitoring data (2020-2025).
| Metric | Trend | Change/Year | Years |
|---|---|---|---|
| Water Clarity | → Stable | 0 m/yr | 2 |
| Phosphorus | ↑ Improving | -9 µg/L/yr | 2 |
| Chlorophyll-a | ↓ Declining | +2.1 µg/L/yr | 2 |
Graded lakes near Bostwick Lake
Bostwick Lake has no grade, but these lakes within a short drive do.
Nearby Lakes in Kent County
Frequently asked questions about Bostwick Lake
Where is Bostwick Lake?
- Bostwick Lake is a lake in Kent County, Michigan. LakeQuality has not rated this lake (UNRATED) — there is not enough recent sampling to assign a letter.
What is the water quality grade for Bostwick Lake?
- Bostwick Lake in Kent County, Michigan is not rated for water quality — its monitoring record does not meet the evidence bar. Water clarity: 8.8 ft visibility. Maximum depth: 24 ft. Surface area: 213.2 acres.
Is Bostwick Lake safe to swim in?
- Not rated for swimming — there is not enough monitoring data to judge this lake. Bostwick Lake is not rated for water quality — its monitoring record does not meet the evidence bar. Always check local health department advisories before swimming.
How deep is Bostwick Lake?
- Bostwick Lake has a maximum depth of 24 feet. The lake covers 213.2 acres.
Explore Bostwick Lake across LakeQuality
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Where this data comes from
18 measurements from 1 monitoring station, 2016–2017. Retrieved from the EPA Water Quality Portal on 2026-08-26.
Collected and reported by
- North American Lake Management Society
NALMS18 samples · 2016–2017
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.