Flint Park Lake
Genesee County, Michigan16 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 · PFAS
- Limited data
Flint Park Lake in Genesee County, Michigan is not rated for water quality — its monitoring record does not meet the evidence bar. Water clarity: 3.8 ft visibility. Surface area: 15.7 acres.
- Clarity
- 3.8 ft
- Area
- 16 acres
- Trend
- ↑ Improving
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Watch Flint Park Lake’s letter
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Why Flint Park Lake has no grade
Flint Park 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, Flint Park Lake is Not Rated — not an F. Its 3.8-foot median from 17 readings collected 2021–2022 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.
Flint Park Lake is a 16-acre lake in Genesee County, Michigan. Overall water quality is improving over recent sampling years.
Source: EPA Water Quality Portal sampling records, EGLE, last sampled 2022-09-17. Grade methodology: LakeQuality methodology.
Swimming Safety
Not ratedLimited data
The letter is not a swimming clearance. Flint Park Lake is listed impaired under Clean Water Act §303(d) (IR 5) for pFAS. Check local advisories before you swim.
Water quality measurements for Flint Park Lake
These readings exist but are not enough for an A–F grade — see why.
Murky, only visible to about 3.8 ft. TSI 58.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 3.8 ft | Not graded |
| Phosphorus | No recent samples | |
| Chlorophyll-a (Algae) | No recent samples | |
| Trophic State Index (TSI) | 58 | Eutrophic |
High nutrients, frequent algae, reduced clarity
Lake Details
| Characteristic | Value |
|---|---|
| Surface Area | 16 acres |
No bathymetric survey has been published for Flint Park Lake, so its depth is not documented here.
Fishing Flint Park Lake
Water Quality Trend: ↑ Improving
Based on 2 years of monitoring data (2020-2025).
| Metric | Trend | Change/Year | Years |
|---|---|---|---|
| Water Clarity | ↑ Improving | +1.51 m/yr | 2 |
| Phosphorus | ↑ Improving | -65 µg/L/yr | 2 |
EPA Impairment Status
Flint Park Lake is officially listed as impaired under Clean Water Act §303(d) in the 2024 EPA reporting cycle (IR category 5).
Causes of impairment
Source: EPA ATTAINS assessment unit MI040802040503-02 · Official waterbody report
Regulated Pollution Sources Nearby
5 EPA-permitted facilities operate within about 5 miles of Flint Park Lake under Clean Water Act (NPDES) discharge permits, including 1 classified by the EPA as major discharger. 5 facilities have a reported Clean Water Act violation in the past three years.
- Flint WwtpFlint · 2.9 mi away · NPDES MI0022926MajorRecent violation
- Westwood Heights Ps MS4-GeneseeFlint · 1.6 mi away · NPDES MI0060348Recent violation
- Mount Morris Twp MS4-GeneseeMount Morris · 2.3 mi away · NPDES MI0060102Recent violation
- Carman-Ainsworth Ps MS4-GeneseeFlint · 3.9 mi away · NPDES MI0060358Recent violation
- Flint Twp MS4-GeneseeFlint · 5 mi away · NPDES MI0060096Recent violation
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 Flint Park Lake
Flint Park Lake has no grade, but these lakes within a short drive do.
Nearby Lakes in Genesee County
Frequently asked questions about Flint Park Lake
Where is Flint Park Lake?
- Flint Park Lake is a lake in Genesee 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 Flint Park Lake?
- Flint Park Lake in Genesee County, Michigan is not rated for water quality — its monitoring record does not meet the evidence bar. Water clarity: 3.8 ft visibility. Surface area: 15.7 acres.
Is Flint Park Lake safe to swim in?
- The letter is not a swimming clearance. Flint Park Lake is listed impaired under Clean Water Act §303(d) (IR 5) for pFAS. Check local advisories before you swim.
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Where this data comes from
17 measurements from 1 monitoring station, 2021–2022. Retrieved from the EPA Water Quality Portal on 2026-08-26.
Collected and reported by
- North American Lake Management Society
NALMS17 samples · 2021–2022
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)