Round Lake Central Basin; Grattan Township is a mesotrophic lake in Kent County, Michigan. Water quality is graded C based on 1 sampling years through 2022. Overall water quality is declining over recent sampling years. Compared to the 17 other monitored lakes in Kent County, Round Lake Central Basin; Grattan Township ranks #13 for water quality.
Source: EPA Water Quality Portal sampling records, Michigan DNR, last sampled 2022-07-04. Grade methodology: LakeGrade methodology.
Watch Round Lake Central Basin; Grattan Township water quality
Subscribe for LakeQuality updates by email. No spam, unsubscribe anytime.
Swimming Safety
Generally safe for swimming, moderate water quality
Water Quality Grade: C, Fair
Moderate clarity, visible to about 8 ft. Trophic State Index: 47.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 8 ft | C |
| Phosphorus | No data | |
| Chlorophyll-a (Algae) | No data | |
| Trophic State Index (TSI) | 47 | Mesotrophic |
Moderate nutrients, good water quality
Where to stay near Round Lake Central Basin; Grattan Township
Compare lakeside cabins, hotels, and vacation rentals near Round Lake Central Basin; Grattan Township 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 Round Lake Central Basin; Grattan Township
Availability and prices from Stay22 partners (Booking.com, Vrbo, Expedia). We may earn a commission from bookings, at no extra cost to you.
Planning a trip to Round Lake Central Basin; Grattan Township?
Get lake water-quality report cards plus the best cabin & lodging deals near Round Lake Central Basin; Grattan Township — straight to your inbox. No spam, unsubscribe anytime.
Planning a whole trip? See where to stay at Michigan’s top lakes →
Fishing Round Lake Central Basin; Grattan Township
Water Quality Trend: ↓ Declining
Based on 2 years of monitoring data (2020-2025).
| Metric | Trend | Change/Year | Years |
|---|---|---|---|
| Water Clarity | ↓ Declining | -2.33 m/yr | 2 |
Location
County Ranking
Ranked #13 of 18 lakes in Kent County
Cleaner Lakes Within 30 Miles
Round Lake Central Basin; Grattan Township holds Grade C. 3 nearby lakes hold higher grades.
Nearby Lakes in Kent County
Explore Round Lake Central Basin; Grattan Township across LakeGrade
Fish species and top-graded lakes across Michigan
Fish species and best lakes in Kent County
Species activity outlook by water temperature and season
Where to stay at Michigan's top lakes, each with its grade
Moderate nutrients, good water quality
Michigan's cleanest and most-polluted lakes, ranked
More Michigan Lake Rankings
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
Allegan County · Clarity: 6.2 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: 2022-07-04
Monitoring stations: 1