Fremont Lake
Newaygo County, Michigan801 acresView mapDirections
Not Rated: one monitoring station are on record, but they measured water clarity only. LakeQuality’s A–F method grades total phosphorus, total nitrogen, chlorophyll-a, and turbidity; clarity is shown, not scored.
- Impaired · Mercury
- 88 ft max depth
- Limited data
Fremont Lake in Newaygo County, Michigan is not rated for water quality — its monitoring record does not meet the evidence bar. Water clarity: 10.3 ft visibility. Maximum depth: 88 ft. Surface area: 801.2 acres.
- Clarity
- 10.3 ft
- Max depth
- 88 ft
- Area
- 801 acres
- Trend
- ↓ Declining
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Watch Fremont Lake’s letter
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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.
Why Fremont Lake has no grade
Fremont Lake has monitoring on record from one station, but only water clarity was measured. LakeQuality’s A–F letter uses total phosphorus, total nitrogen, chlorophyll-a, and turbidity against EPA National Lakes Assessment condition classes. With none of those grading measurements on record, Fremont Lake is Not Rated — not an F. Its 10.3-foot median from 46 readings collected 2016–2022 is still shown as clarity, but clarity alone cannot earn a letter.
Not Rated is EPA Integrated Reporting Category 3 — insufficient information. 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.
Fremont Lake is a 801-acre lake in Newaygo County, Michigan with a maximum depth of 88 feet. Overall water quality is declining over recent sampling years.
Source: EPA Water Quality Portal sampling records, EGLE, last sampled 2022-09-08. Grade methodology: LakeQuality methodology.
What Fremont Lake is good for
From access and monitoring records, not editorial picks.
- Clear water10.3 ft of visibility
- Deep water88 ft surveyed max depth
Swimming Safety
Not ratedLimited data
The letter is not a swimming clearance. Fremont Lake is listed impaired under Clean Water Act §303(d) (IR 5) for mercury, oxygen depletion (low DO), pCBs. Check local advisories before you swim.
Water quality measurements for Fremont Lake
These readings exist but are not enough for an A–F grade — see why.
Good clarity, visible to about 10.3 ft. TSI 44.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 10.3 ft | Not graded |
| Phosphorus | No recent samples | |
| Chlorophyll-a (Algae) | No recent samples | |
| Trophic State Index (TSI) | 44 | Mesotrophic |
Moderate nutrients, good water quality
Lake Details
| Characteristic | Value |
|---|---|
| Maximum Depth | 88 ft |
| Surface Area | 801 acres |
Fishing Fremont Lake
Water Quality Trend: ↓ Declining
Based on 7 years of monitoring data (2020-2025).
| Metric | Trend | Change/Year | Years |
|---|---|---|---|
| Water Clarity | → Stable | +0.076 m/yr | 6 |
| Phosphorus | → Stable | -0.3 µg/L/yr | 6 |
| Chlorophyll-a | ↓ Declining | +0.18 µg/L/yr | 4 |
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
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.
Graded lakes near Fremont Lake
Fremont Lake has no grade, but these lakes within a short drive do.
Nearby Lakes in Newaygo County
Frequently asked questions about Fremont Lake
Where is Fremont Lake?
- Fremont Lake is a lake in Newaygo County, Michigan. LakeQuality has not rated this lake (UNRATED) — 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.
What is the water quality grade for Fremont Lake?
- Fremont Lake in Newaygo County, Michigan is not rated for water quality — its monitoring record does not meet the evidence bar. Water clarity: 10.3 ft visibility. Maximum depth: 88 ft. Surface area: 801.2 acres.
Is Fremont Lake safe to swim in?
- The letter is not a swimming clearance. Fremont Lake is listed impaired under Clean Water Act §303(d) (IR 5) for mercury, oxygen depletion (low DO), pCBs. Check local advisories before you swim.
How deep is Fremont Lake?
- Fremont Lake has a maximum depth of 88 feet. The lake covers 801.2 acres.
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Where this data comes from
46 measurements from 1 monitoring station, 2016–2022. Retrieved from the EPA Water Quality Portal on 2026-08-26.
Collected and reported by
- North American Lake Management Society
NALMS46 samples · 2016–2022
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.
Other records on this page
Impairment status from EPA ATTAINS 303(d) database
Regulated discharger data from EPA ECHO (ICIS-NPDES)