Oneida Lake East Central Basin is a mesotrophic lake in Livingston County, Michigan. Water quality is graded B based on 2 sampling years through 2023. Water clarity is improving over recent sampling years. Compared to the 19 other monitored lakes in Livingston County, Oneida Lake East Central Basin ranks #7 for water quality.
Source: EPA Water Quality Portal sampling records, Michigan DNR, last sampled 2023-09-15. Grade methodology: LakeGrade methodology.
Watch Oneida Lake East Central Basin water quality
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Swimming Safety
Good for swimming, clear water with low algae levels
Water Quality Grade: B, Good
Moderate clarity, visible to about 8.5 ft. Chlorophyll-a: 2.1 µg/L. Trophic State Index: 42.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 8.5 ft | C |
| Phosphorus | No data | |
| Chlorophyll-a (Algae) | 2.1 µg/L | A |
| Trophic State Index (TSI) | 42 | Mesotrophic |
Moderate nutrients, good water quality
Where to stay near Oneida Lake East Central Basin
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Fishing Oneida Lake East Central Basin
Water Quality Trend: → Stable
Based on 3 years of monitoring data (2020-2025).
| Metric | Trend | Change/Year | Years |
|---|---|---|---|
| Water Clarity | ↑ Improving | +1.7 m/yr | 3 |
| Chlorophyll-a | ↓ Declining | +0.05 µg/L/yr | 3 |
Water Temperature
Oneida Lake East Central Basin averages about 60°F at the surface in summer, usually warmest in Aug (about 62°F) and coldest in May (about 54°F). These are typical values by month — not a live reading.
Typical surface water temperature by month, from 240 field readings (2021–2023) via the EPA Water Quality Portal. See the full Oneida Lake East Central Basin water temperature breakdown →
Location
County Ranking
Ranked #7 of 20 lakes in Livingston County
Cleaner Lakes Within 30 Miles
Oneida Lake East Central Basin holds Grade B. One nearby lake has a higher grade.
See full comparison →Nearby Lakes in Livingston County
Explore Oneida Lake East Central Basin across LakeGrade
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Moderate nutrients, good water quality
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Other Grade B Lakes in Michigan
Washtenaw County · Clarity: 11 ft
Washtenaw County · Clarity: 13 ft
Washtenaw County · Clarity: 11 ft
Washtenaw County · Clarity: 12 ft
Washtenaw County · Clarity: 11.5 ft
Washtenaw County · Clarity: 12 ft
Mesotrophic Lakes in Michigan
More records, surveys & data sources
EPA Impairment Status
Oneida Lake East Central Basin 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 MI040900050307-09 · Official waterbody report · Matched by proximity (1.91 km)
Lake Size & Watershed
Size, shoreline, and watershed area from HydroLAKES (HydroSHEDS). Mean depth is a modeled estimate.
Regulated Pollution Sources Nearby
1 EPA-permitted facility operate within about 5 miles of Oneida Lake East Central Basin under Clean Water Act (NPDES) discharge permits.
- Hamburg Twp Wwtp-BsWhitmore Lake · 1.3 mi away · NPDES MIG960017
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.
Data Sources
Water quality data from the EPA Water Quality Portal
Impairment status from EPA ATTAINS 303(d) database
Regulated discharger data from EPA ECHO (ICIS-NPDES)
Lake size & watershed from HydroLAKES (HydroSHEDS)
Grading methodology based on Metropolitan Council standards
Most recent sample: 2023-09-15
Monitoring stations: 1