Flint Park Lake
Genesee County, Michigan16 acresView mapDirections
EGLE publishes the water-quality measurements for Flint Park Lake. Here is what has been measured.
- Eutrophic
- Impaired · PFAS
- Limited data
Flint Park Lake in Genesee County, Michigan has water-quality measurements published by EGLE, shown here as reported. Water clarity: 3.8 ft visibility. Phosphorus: 87.5 µg/L. Chlorophyll-a (algae): 12 µg/L. Surface area: 15.7 acres.
Flint Park Lake is a 16-acre productive, nutrient-rich eutrophic lake in Genesee County, Michigan. Overall water quality is improving over recent sampling years. Compared to the 1 other monitored lakes in Genesee County, Flint Park Lake ranks #1 for water quality.
Source: EPA Water Quality Portal sampling records, EGLE, last sampled 2022-09-17. Methodology: how these readings are compared.
Swimming conditions
Readings onlyLimited data
Based on clarity and algae readings from past sampling — there is no live water temperature and a current cyanobacteria reading for this lake. Check your state or county health department before you swim.
Nutrient and algae readings are 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.
Whether Flint Park Lake is safe to swim in today is a call for the Michigan Department of Environment, Great Lakes, and Energy (EGLE) and the county health department, who post current advisories. LakeQuality does not issue swimming clearances.
Water quality measurements for Flint Park Lake
These are the measurements EGLE publishes for Flint Park Lake, shown as reported. The condition class beside each reading is the EPA National Lakes Assessment class for this lake’s ecoregion.
Murky, only visible to about 3.8 ft. Phosphorus 87.5 µg/L. Chlorophyll-a 12 µg/L. TSI 61.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | 3.8ft | Measured, not scored How deep a black-and-white disk stays visible from the surface. Higher is clearer. |
| Total phosphorus | 87.5µg/L | Measured, not scored The nutrient that most limits algae growth in freshwater. More phosphorus, more algae potential. |
| Chlorophyll-a (algae) | 12µg/L | Fair GoodFairPoor |
| Trophic state (TSI)Carlson's 0–100 index of how much algae a lake can support, from clarity, phosphorus and chlorophyll-a. | 61 | Eutrophic OligotrophicMesotrophicEutrophicHypereutrophic |
High nutrients, frequent algae, reduced clarity
Ask about Flint Park Lake
Answers come straight from the public measurements and survey records on this page.
Water Temperature
Flint Park Lake typically sits around 72°F at the surface in September. Summer average is about 68°F. Usually warmest in Aug (about 73°F) and coldest in Jun (about 59°F). These are typical values by month — not a live reading.
Column height runs from this lake’s coldest month (59°F) to its warmest (73°F).
Typical surface water temperature by month, from 44 field readings (2022–2022) via the EPA Water Quality Portal. See the full Flint Park Lake water temperature breakdown →
Lake Details
Surface area
16 acres
No bathymetric survey has been published for Flint Park Lake, so its depth is not documented here.
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Fishing Flint Park Lake
Water quality readings over time
2 seasons of samples on record (2021–2022). Calling a direction takes at least 4 years of the same measurement.
Water clarity
Improving2 years
Phosphorus
Improving-65 µg/L/yr2 years
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
Designated uses not supporting: Fish consumption.
Source: EPA ATTAINS assessment unit MI040802040503-02 · Official waterbody report
Regulated Pollution Sources Nearby
7 EPA-permitted facilities operate within about 5 miles of Flint Park Lake under Clean Water Act (NPDES) discharge permits. 3 facilities have a reported Clean Water Act violation in the past three years.
- Gm-Powertrain Flint NorthFlint · 2.2 mi away · NPDES MI0001597Recent violation
- Mount Morris MS4-GeneseeMount Morris · 4.3 mi away · NPDES MI0060101Recent violation
- Mount Morris Ps MS4-GeneseeMount Morris · 4.8 mi away · NPDES MI0060361Recent violation
- Gm Powertrain-Flint NorthFlint · 1.8 mi away · NPDES MI0057397
- Racer Trust-Coldwater Road FacilityMount Morris · 3.4 mi away · NPDES MI0060329
- Itw Tacc Polyurethane CenterLapeer · 4.7 mi away · NPDES MIG250076
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.
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. Its water-quality measurements are published by EGLE and shown on this page as reported.
What is the water quality of Flint Park Lake?
- Flint Park Lake in Genesee County, Michigan has water-quality measurements published by EGLE, shown here as reported. Water clarity: 3.8 ft visibility. Phosphorus: 87.5 µg/L. Chlorophyll-a (algae): 12 µg/L. Surface area: 15.7 acres.
Is Flint Park Lake safe to swim in?
- Nutrient and algae readings are 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.
What is the water temperature of Flint Park Lake?
- Flint Park Lake typically sits around 72°F at the surface in September, from 44 EPA Water Quality Portal field readings (2022–2022). That is a typical value for the month, not a live reading.
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Where this data comes from
24 measurements from 1 monitoring station, 2021–2022. Retrieved from the EPA Water Quality Portal on 2026-08-26.
Collected and reported by
- Michigan EGLE - MiCorps
21MICH_MICORPS24 samples · 2021–2022
Analytical methods
- Phosphorus by Colorimetry
- 445.0 ~ EPA; Chlorophyll and Pheophytin in Algae by Fluorescence
Monitoring station identifiers (1)
EPA condition classes from the National Lakes Assessment (EPA 841-R-24-006, Table 6-3), applied by ecoregion. See where the data comes from and data sources.
Other records on this page
Impairment status from EPA ATTAINS 303(d) database
Regulated discharger data from EPA ECHO (ICIS-NPDES)