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LakeQuality

Macomb County, Michigan · Water Quality Report Card

Lake St Clair Metropark Beach

Grade Not rated
Limited Data

Lake St Clair Metropark Beach in Macomb County, Michigan is not rated for water quality — its monitoring record does not meet the evidence bar.

Mean depth
~10 ft est.

Lake St Clair Metropark Beach is a lake in Macomb County, Michigan with an estimated average depth of about 10 feet.

Source: EPA Water Quality Portal sampling records, EGLE, last sampled 2023-09-26. Grade methodology: LakeGrade methodology.

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Swimming Safety

A
Bacteria swim-safety grade: A
from E. coli testing · 38 samples, 4 seasons

Based on E. coli testing, Lake St Clair Metropark Beach never exceeded the EPA safe-swimming threshold (235 MPN/100mL) — on 0% of 38 samples across 4 seasons.

This is a historical summary of past testing, not a current condition — bacteria levels change quickly, especially after rain. Always check Michigan’s current beach and health-department advisories before swimming.

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Water Quality Grade: Not rated

No clarity data.

MetricValueGrade
Water Clarity (Secchi Depth)No data
PhosphorusNo data
Chlorophyll-a (Algae)No data

Lake Details

CharacteristicValue
Average Depth~10 ft est.

Depth marked “est.” is a modeled estimate from HydroLAKES, not a measured survey. Michigan has not published bathymetry for Lake St Clair Metropark Beach.

Where to stay near Lake St Clair Metropark Beach

Compare lakeside cabins, hotels, and vacation rentals near Lake St Clair Metropark Beach in Macomb County, Michigan — live availability and prices for your trip. Switch the map to Satellite to see the lake and how close each stay is to the water.

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Location

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Nearby Lakes in Macomb County

More records, surveys & data sources

EPA Impairment Status

Lake St Clair Metropark Beach is officially listed as impaired under Clean Water Act §303(d) in the 2024 EPA reporting cycle (IR category 4A).

Causes of impairment

Pathogens (E. coli, fecal)

A Total Maximum Daily Load (TMDL) plan has been approved.

Source: EPA ATTAINS assessment unit MI040900020200-02 · Official waterbody report · Matched by proximity (0.02 km)

Lake Size & Watershed

Watershed (drainage) area
228,847 sq mi
Surface area
286,931 acres
Mean depth (modeled estimate)
~10 ft est.
Shoreline
276.8 mi
Elevation
568 ft

Size, shoreline, and watershed area from HydroLAKES (HydroSHEDS). Mean depth here is modelled, not surveyed — HydroLAKES v1.0 estimates lake depth from surrounding terrain rather than from soundings. Treat it as an approximation, and prefer a state bathymetric survey where one exists.

Where this data comes from

462 measurements from 6 monitoring stations, 2022–2023. Retrieved from the EPA Water Quality Portal on 2026-08-02.

Collected and reported by

  • USGS Michigan Water Science CenterUSGS-MI462 samples · 2022–2023
Monitoring station identifiers (6)

Grade thresholds come from the U.S. EPA National Lakes Assessment 2022 Technical Support Document (EPA 841-R-24-006, Table 6-3), applied by ecoregion. See how grades are calculated.

Data Sources

Water quality data from the EPA Water Quality Portal

Impairment status from EPA ATTAINS 303(d) database

Lake size & watershed from HydroLAKES (HydroSHEDS)

Grade thresholds from the EPA National Lakes Assessment (EPA 841-R-24-006, Table 6-3), applied by ecoregion

Most recent sample: 2023-09-26

Monitoring stations: 6

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