Murray Lake East Basin; Grattan Township is a mesotrophic lake in Kent County, Michigan. Water quality is graded B based on 2 sampling years through 2023. Overall water quality is improving over recent sampling years. The lake supports 29 documented fish species including Black crappie, Blackchin shiner, and Blacknose shiner. Compared to the 17 other monitored lakes in Kent County, Murray Lake East Basin; Grattan Township ranks #1 for water quality.
Source: EPA Water Quality Portal sampling records, Michigan DNR, last sampled 2023-09-18. Grade methodology: LakeGrade methodology.
Watch Murray Lake East Basin; Grattan Township water quality
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Swimming Safety
Good for swimming, clear water with low algae levels
Water Quality Grade: B, Good
Moderate clarity, visible to about 7.2 ft. Chlorophyll-a: 3.9 µg/L. Trophic State Index: 46.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 7.2 ft | C |
| Phosphorus | No data | |
| Chlorophyll-a (Algae) | 3.9 µg/L | A |
| Trophic State Index (TSI) | 46 | Mesotrophic |
Moderate nutrients, good water quality
Where to stay near Murray Lake East Basin; Grattan Township
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Top-rated places to stay near Murray Lake East Basin; Grattan Township
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Fish Species
Click a species to see every graded lake where it is documented.
Fishing Murray Lake East Basin; Grattan Township
- → Murray Lake East Basin; Grattan Township fishing forecast & best times (species outlook + 14-day solunar calendar)
- → Murray Lake East Basin; Grattan Township fishing regulations (limits, seasons, special rules)
- → Is it safe to eat fish from Murray Lake East Basin; Grattan Township? (mercury & PFAS guide)
Water Quality Trend: ↑ Improving
Based on 3 years of monitoring data (2020-2025).
| Metric | Trend | Change/Year | Years |
|---|---|---|---|
| Water Clarity | ↑ Improving | +2 m/yr | 3 |
| Chlorophyll-a | ↑ Improving | -0.7 µg/L/yr | 3 |
Water Temperature
Murray Lake East Basin; Grattan Township averages about 55°F at the surface in summer, usually warmest in Aug (about 56°F) and coldest in May (about 48°F). These are typical values by month — not a live reading.
Typical surface water temperature by month, from 717 field readings (2010–2019) via the EPA Water Quality Portal. See the full Murray Lake East Basin; Grattan Township water temperature breakdown →
Location
County Ranking
Ranked #1 of 18 lakes in Kent County
Nearby Lakes in Kent County
Explore Murray Lake East 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 B Lakes in Michigan
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: 2023-09-18
Monitoring stations: 1