Cordley Lake Central Basin; Hamburg Township is a mesotrophic lake in Livingston County, Michigan. Water quality is graded A based on 1 sampling years through 2023. Overall water quality is improving over recent sampling years. The lake supports 7 documented fish species including Blackstripe topminnow, Bluntnose minnow, and Brook silverside. Compared to the 19 other monitored lakes in Livingston County, Cordley Lake Central Basin; Hamburg Township ranks #1 for water quality.
Source: EPA Water Quality Portal sampling records, Michigan DNR, last sampled 2023-09-16. Grade methodology: LakeGrade methodology.
Watch Cordley Lake Central Basin; Hamburg Township water quality
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Swimming Safety
Excellent for swimming, crystal clear water with minimal algae
Water Quality Grade: A, Excellent
No clarity data. Chlorophyll-a: 2.7 µg/L. Trophic State Index: 40.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | No data | |
| Phosphorus | No data | |
| Chlorophyll-a (Algae) | 2.7 µg/L | A |
| Trophic State Index (TSI) | 40 | Mesotrophic |
Moderate nutrients, good water quality
Where to stay near Cordley Lake Central Basin; Hamburg Township
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Fish Species
Click a species to see every graded lake where it is documented.
Fishing Cordley Lake Central Basin; Hamburg Township
- → Cordley Lake Central Basin; Hamburg Township fishing forecast & best times (species outlook + 14-day solunar calendar)
- → Cordley Lake Central Basin; Hamburg Township fishing regulations (limits, seasons, special rules)
- → Is it safe to eat fish from Cordley Lake Central Basin; Hamburg Township? (mercury & PFAS guide)
Water Quality Trend: ↑ Improving
Based on 3 years of monitoring data (2020-2025).
| Metric | Trend | Change/Year | Years |
|---|---|---|---|
| Water Clarity | ↑ Improving | +0.43 m/yr | 2 |
Location & Depth Map
Free interactive depth-contour map of Cordley Lake Central Basin; Hamburg Township, reaching a maximum surveyed depth of 31 ft. Toggle Depth contours to overlay the bathymetric survey lines. Contour data from Michigan DNR.
County Ranking
Ranked #1 of 20 lakes in Livingston County
Nearby Lakes in Livingston County
Explore Cordley Lake Central Basin; Hamburg Township across LakeGrade
Fish species and top-graded lakes across Michigan
Fish species and best lakes in Livingston 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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More Michigan Lake Rankings
Other Grade A Lakes in Michigan
Washtenaw County · Clarity: 11.5 ft
Washtenaw County · Clarity: 12 ft
Jackson County · Clarity: 10 ft
Oakland County · Clarity: 15 ft
Lenawee County · Clarity: 13.5 ft
Oakland County · Clarity: 25 ft
Mesotrophic Lakes in Michigan
More records, surveys & data sources
EPA Impairment Status
Cordley Lake Central Basin; Hamburg Township 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 MI040900050307-24 · Official waterbody report · Matched by proximity (1.64 km)
Lake Size & Watershed
Size, shoreline, and watershed area from HydroLAKES (HydroSHEDS). Mean depth is a modeled estimate.
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)
Grading methodology based on Metropolitan Council standards
Most recent sample: 2023-09-16
Monitoring stations: 1