Lake Orion
Oakland County, WisconsinLimited DataMesotrophic
Lake Orion is a 470-acre mesotrophic lake in Oakland County, MI. Water quality is graded B based on 1 sampling years through 2022. Compared to the 44 other monitored lakes in Oakland County, Lake Orion ranks #11 for water quality.
Source: EPA Water Quality Portal sampling records, local state DNR records, last sampled 2022-09-14. 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 13 ft. Trophic State Index: 40.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 13 ft | B |
| Phosphorus | No data | |
| Chlorophyll-a (Algae) | No data | |
| Trophic State Index (TSI) | 40 | Mesotrophic |
Moderate nutrients, good water quality
Lake Details
| Characteristic | Value |
|---|---|
| Surface Area | 470 acres |
Location
County Ranking
Ranked #11 of 45 lakes in Oakland County
Cleaner Lakes Within 30 Miles
Lake Orion holds Grade B. One nearby lake has a higher grade.
See full comparison →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)
Lake Orion is a man-made reservoir impounded by the Lake Orion Dam (completed 1829), built primarily for other on the Paint Creek; gravity-type dam, 18 ft tall and 760 ft long.
- Surface area
- 470 ac
- Normal storage
- 1,800 ac-ft
- Max storage
- 3,600 ac-ft
- Drainage area
- 37 sq mi
- Hazard class
- Significant
- Owner
- Village of Lake Orion
Source: USACE National Inventory of Dams, NID ID MI00259 · Operator website
EPA Impairment Status
Lake Orion is officially listed as impaired under Clean Water Act §303(d) in the 2024 EPA reporting cycle (IR category 5).
Causes of impairment
Source: EPA ATTAINS assessment unit MI040900030105-02 · Official waterbody report
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: 2022-09-14
Monitoring stations: 1