Lake Calumet
Cook County, WisconsinLimited DataEutrophic
Lake Calumet is a 0-acre productive, nutrient-rich eutrophic lake in Cook County, IL. Water quality is graded F based on 1 sampling years through 2023. Compared to the 67 other monitored lakes in Cook County, Lake Calumet ranks #66 for water quality.
Source: EPA Water Quality Portal sampling records, local state DNR records, last sampled 2023-07-18. Grade methodology: LakeGrade methodology.
Swimming Safety
Avoid swimming, very poor water quality, potential algae toxins
Water Quality Grade: F, Very Poor
Very murky, less than 3 ft of visibility. Trophic State Index: 61.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 3 ft | F |
| Phosphorus | No data | |
| Chlorophyll-a (Algae) | No data | |
| Trophic State Index (TSI) | 61 | Eutrophic |
High nutrients, frequent algae, reduced clarity
Location
County Ranking
Ranked #66 of 68 lakes in Cook County
Cleaner Lakes Within 30 Miles
Lake Calumet holds Grade F. 2 nearby lakes hold higher grades.
- BCalumet LakeCook County · 0.1 mi · Two grade letters higher (F → B)
- BFlatfoot LakeCook County · 1.9 mi · Two grade letters higher (F → B)
Nearby Lakes in Cook County
More Wisconsin Lake Rankings
Other Grade F Lakes in Wisconsin
Eutrophic Lakes in Wisconsin
Reservoir Info (USACE NID)
Lake Calumet 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
Lake Calumet 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: 2023-07-18
Monitoring stations: 1