Fremont Lake is a mesotrophic lake in Newaygo County, Michigan. Water quality is graded B based on 1 sampling years through 2022. Overall water quality is declining over recent sampling years. Compared to the 16 other monitored lakes in Newaygo County, Fremont Lake ranks #11 for water quality.
Source: EPA Water Quality Portal sampling records, Michigan DNR, last sampled 2022-09-08. Grade methodology: LakeGrade methodology.
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Swimming Safety
Good for swimming, clear water with low algae levels
Water Quality Grade: B, Good
Good clarity, visible to about 10 ft. Trophic State Index: 44.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 10 ft | B |
| Phosphorus | No data | |
| Chlorophyll-a (Algae) | No data | |
| Trophic State Index (TSI) | 44 | Mesotrophic |
Moderate nutrients, good water quality
Where to stay near Fremont Lake
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Fishing Fremont Lake
Water Quality Trend: ↓ Declining
Based on 3 years of monitoring data (2020-2025).
| Metric | Trend | Change/Year | Years |
|---|---|---|---|
| Water Clarity | ↓ Declining | -0.44 m/yr | 2 |
| Chlorophyll-a | ↓ Declining | +0.15 µg/L/yr | 2 |
Location & Depth Map
Free interactive depth-contour map of Fremont Lake, reaching a maximum surveyed depth of 88 ft. Toggle Depth contours to overlay the bathymetric survey lines. Contour data from Michigan DNR.
County Ranking
Ranked #11 of 17 lakes in Newaygo County
Nearby Lakes in Newaygo County
Explore Fremont Lake across LakeGrade
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Fish species and best lakes in Newaygo 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
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Other Grade B Lakes in Michigan
Muskegon County · Clarity: 11 ft
Muskegon County · Clarity: 11 ft
Lake County · Clarity: 8 ft
Muskegon County · Clarity: 10.8 ft
Muskegon County · Clarity: 7 ft
Muskegon County · Clarity: 10.5 ft
Mesotrophic Lakes in Michigan
More records, surveys & data sources
EPA Impairment Status
Fremont Lake is officially listed as impaired under Clean Water Act §303(d) in the 2024 EPA reporting cycle (IR category 5).
Causes of impairment
A Total Maximum Daily Load (TMDL) plan has been approved.
Source: EPA ATTAINS assessment unit MI040601020905-03 · Official waterbody report
Lake Size & Watershed
Size, shoreline, and watershed area from HydroLAKES (HydroSHEDS). Mean depth is a modeled estimate.
Regulated Pollution Sources Nearby
2 EPA-permitted facilities operate within about 5 miles of Fremont Lake under Clean Water Act (NPDES) discharge permits.
- Weaver Oil Co-FremontFremont · 1.6 mi away · NPDES MIG080882
- City Of FremontFremont · 2 mi away · NPDES MIG960010
Facilities permitted to discharge under the Clean Water Act within ~5 miles; proximity does not by itself mean a facility affects this lake. Source: EPA ECHO (ICIS-NPDES), as of 2026-07.
Data Sources
Water quality data from the EPA Water Quality Portal
Impairment status from EPA ATTAINS 303(d) database
Regulated discharger data from EPA ECHO (ICIS-NPDES)
Lake size & watershed from HydroLAKES (HydroSHEDS)
Grading methodology based on Metropolitan Council standards
Most recent sample: 2022-09-08
Monitoring stations: 1