Calumet Lake
Cook County, WisconsinMesotrophic
Calumet Lake is a 0-acre mesotrophic lake in Cook County, IL. Water quality is graded B based on 2 sampling years through 2021. Compared to the 67 other monitored lakes in Cook County, Calumet Lake ranks #9 for water quality.
Source: EPA Water Quality Portal sampling records, local state DNR records, last sampled 2021-10-05. Grade methodology: LakeGrade methodology.
Swimming Safety
Good for swimming, clear water with low algae levels
Water Quality Grade: B, Good
Murky, only visible to about 4.3 ft. Phosphorus level: 10.5 µg/L. Trophic State Index: 47.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 4.3 ft | D |
| Phosphorus | 10.5 µg/L | A |
| Chlorophyll-a (Algae) | No data | |
| Trophic State Index (TSI) | 47 | Mesotrophic |
Moderate nutrients, good water quality
Location
County Ranking
Ranked #9 of 68 lakes in Cook County
Nearby Lakes in Cook County
More Wisconsin Lake Rankings
Other Grade B Lakes in Wisconsin
Mesotrophic Lakes in Wisconsin
Reservoir Info (USACE NID)
Calumet Lake is a man-made reservoir impounded by the Thomas J. O'Brien Lock and Controlling Works (completed 1960), built primarily for navigation on the CALUMET RIVER; concrete-type dam, 37 ft tall and 430 ft long.
- Surface area
- 0 ac
- Normal storage
- 0 ac-ft
- Max storage
- 9,700 ac-ft
- Drainage area
- 250 sq mi
- Hazard class
- High
- Owner
- USACE - Chicago District
All listed purposes: Navigation;Other;Flood Risk Reduction.
Source: USACE National Inventory of Dams, NID ID IL01013 · Operator website
EPA Impairment Status
Calumet Lake 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 IL_RHO · 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: 2021-10-05
Monitoring stations: 3