Bostwick Lake
Kent County, Michigan213 acresView mapDirections
EGLE publishes the water-quality measurements for Bostwick Lake. Here is what has been measured.
- Mesotrophic
- 24 ft max depth
- Limited data
Bostwick Lake in Kent County, Michigan has water-quality measurements published by EGLE, shown here as reported. Water clarity: 8.8 ft visibility. Phosphorus: 19.5 µg/L. Chlorophyll-a (algae): 3.3 µg/L. Maximum depth: 24 ft. Surface area: 213.2 acres.
Bostwick Lake is a 213-acre mesotrophic lake in Kent County, Michigan with a maximum depth of 24 feet. Phosphorus level is improving over recent sampling years. Compared to the 9 other monitored lakes in Kent County, Bostwick Lake ranks #1 for water quality.
Source: EPA Water Quality Portal sampling records, EGLE, last sampled 2017-09-13. Methodology: how these readings are compared.
Swimming conditions
Readings onlyLimited data
Based on clarity and algae readings from past sampling — there is no live water temperature and a current cyanobacteria reading for this lake. Check your state or county health department before you swim.
Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
Whether Bostwick Lake is safe to swim in today is a call for the Michigan Department of Environment, Great Lakes, and Energy (EGLE) and the county health department, who post current advisories. LakeQuality does not issue swimming clearances.
Water quality measurements for Bostwick Lake
These are the measurements EGLE publishes for Bostwick Lake, shown as reported. The condition class beside each reading is the EPA National Lakes Assessment class for this lake’s ecoregion.
Moderate clarity, visible to about 8.8 ft. Phosphorus 19.5 µg/L. Chlorophyll-a 3.3 µg/L. TSI 45.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | 8.8ft | Measured, not scored How deep a black-and-white disk stays visible from the surface. Higher is clearer. |
| Total phosphorus | 19.5µg/L | Measured, not scored The nutrient that most limits algae growth in freshwater. More phosphorus, more algae potential. |
| Chlorophyll-a (algae) | 3.3µg/L | Good GoodFairPoor |
| Trophic state (TSI)Carlson's 0–100 index of how much algae a lake can support, from clarity, phosphorus and chlorophyll-a. | 45 | Mesotrophic OligotrophicMesotrophicEutrophicHypereutrophic |
Moderate nutrients, good water quality
Ask about Bostwick Lake
Answers come straight from the public measurements and survey records on this page.
Lake Details
Max depth
24 ft
Surface area
213 acres
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Fishing Bostwick Lake
Water quality readings over time
2 seasons of samples on record (2016–2017). Calling a direction takes at least 4 years of the same measurement.
Water clarity
Stable2 years
Phosphorus
Improving-9 µg/L/yr2 years
Chlorophyll-a
Worsening+2.1 µg/L/yr2 years
Nearby Lakes in Kent County
Frequently asked questions about Bostwick Lake
Where is Bostwick Lake?
- Bostwick Lake is a lake in Kent County, Michigan. Its water-quality measurements are published by EGLE and shown on this page as reported.
What is the water quality of Bostwick Lake?
- Bostwick Lake in Kent County, Michigan has water-quality measurements published by EGLE, shown here as reported. Water clarity: 8.8 ft visibility. Phosphorus: 19.5 µg/L. Chlorophyll-a (algae): 3.3 µg/L. Maximum depth: 24 ft. Surface area: 213.2 acres.
Is Bostwick Lake safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
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
32 measurements from 1 monitoring station, 2016–2017. Retrieved from the EPA Water Quality Portal on 2026-08-26.
Collected and reported by
- Michigan EGLE - MiCorps
21MICH_MICORPS32 samples · 2016–2017
Analytical methods
- Phosphorus by Colorimetry
- 445.0 ~ EPA; Chlorophyll and Pheophytin in Algae by Fluorescence
Monitoring station identifiers (1)
EPA condition classes from the National Lakes Assessment (EPA 841-R-24-006, Table 6-3), applied by ecoregion. See where the data comes from and data sources.