Cedar Island Lake
Oakland County, WisconsinLimited DataMesotrophic
Cedar Island Lake is a 290-acre mesotrophic lake in Oakland County, MI. Water quality is graded B based on 1 sampling years through 2022. The lake supports 1 documented fish species including Lake herring. Compared to the 44 other monitored lakes in Oakland County, Cedar Island Lake ranks #19 for water quality.
Source: EPA Water Quality Portal sampling records, local state DNR records, last sampled 2022-09-17. Grade methodology: LakeGrade methodology.
Swimming Safety
Good for swimming, clear water with low algae levels
Water Quality Grade: B, Good
Good clarity, visible to about 10.5 ft. Trophic State Index: 43.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 10.5 ft | B |
| Phosphorus | No data | |
| Chlorophyll-a (Algae) | No data | |
| Trophic State Index (TSI) | 43 | Mesotrophic |
Moderate nutrients, good water quality
Lake Details
| Characteristic | Value |
|---|---|
| Surface Area | 290 acres |
Fish Species
Click a species to see all Wisconsin and Minnesota lakes where it is found.
→ Best fishing times for Cedar Island Lake (14-day solunar calendar)
→ Is it safe to eat fish from Cedar Island Lake? (mercury & PFAS guide)
→ Cedar Island Lake fishing regulations (limits, seasons, special rules)
Location
County Ranking
Ranked #19 of 45 lakes in Oakland County
Cleaner Lakes Within 30 Miles
Cedar Island Lake holds Grade B. 2 nearby lakes hold higher grades.
- AOxbow Lake Southeast Basin; White Lake Township Section 26Oakland County · 0.8 mi · Higher grade (B → A)
- AMaceday Lake Central Basin; Waterford Township Section 7Oakland County · 4.6 mi · Higher grade (B → A)
Nearby Lakes in Oakland County
More Wisconsin Lake Rankings
Other Grade B Lakes in Wisconsin
Lapeer County · Clarity: 9.5 ft
Livingston County · Clarity: 13 ft
Manistee County · Clarity: 11 ft
Lake County · Clarity: 14 ft
Cass County · Clarity: 10.5 ft
Genesee County · Clarity: 10 ft
Mesotrophic Lakes in Wisconsin
Reservoir Info (USACE NID)
Cedar Island Lake is a man-made reservoir impounded by the Oxbow Dam (completed 1964), built primarily for recreation on the Huron River; earth-type dam, 15 ft tall and 255 ft long.
- Surface area
- 290 ac
- Normal storage
- 6,900 ac-ft
- Max storage
- 2,100 ac-ft
- Drainage area
- 25.7 sq mi
- Hazard class
- High
- Owner
- Oakland County Drain Commissioner
Source: USACE National Inventory of Dams, NID ID MI00263 · Operator website · Matched by proximity (0.97 km)
EPA Impairment Status
Cedar Island Lake 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 MI040900050102-11 · Official waterbody report · Matched by proximity (2.56 km)
Data Sources
Water quality data from the EPA Water Quality Portal
Impairment status from EPA ATTAINS 303(d) database
Grading methodology based on Metropolitan Council standards
Most recent sample: 2022-09-17
Monitoring stations: 1