Cook County, Minnesota · Water Quality Report Card
Cuffs Lake Inlet
Cuffs Lake Inlet in Cook County, Minnesota is not rated for water quality — its monitoring record does not meet the evidence bar.
- Trend
- ↓ Declining
Cuffs Lake Inlet is a lake in Cook County, Minnesota. Overall water quality is declining over recent sampling years.
Source: EPA Water Quality Portal sampling records, Minnesota DNR LakeFinder, last sampled 2024-09-09. Grade methodology: LakeGrade methodology.
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Swimming Safety
Not rated for swimming — there is not enough monitoring data to judge this lake
Water Quality Grade: Not rated
No clarity data.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | No data | |
| Phosphorus | No data | |
| Chlorophyll-a (Algae) | No data |
Where to stay near Cuffs Lake Inlet
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Fishing Cuffs Lake Inlet
Water Quality Trend: ↓ Declining
Based on 5 years of monitoring data (2020-2025).
| Metric | Trend | Change/Year | Years |
|---|---|---|---|
| Water Clarity | ↓ Declining | -14.121 m/yr | 3 |
| Phosphorus | ↑ Improving | -9.24 µg/L/yr | 5 |
| Chlorophyll-a | ↓ Declining | +0.76 µg/L/yr | 4 |
Location
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Where this data comes from
4 measurements from 2 monitoring stations, 2020–2024. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- Grand Portage Reservation
GPC5_WQX3 samples · 2022–2024 - 21GPBCH - Grand Portage Beaches (Tribal)
21GPBCH1 sample · 2020
Analytical methods
- Turbidity by Nephelometry
Monitoring station identifiers (2)
Grade thresholds come from the U.S. EPA National Lakes Assessment 2022 Technical Support Document (EPA 841-R-24-006, Table 6-3), applied by ecoregion. See how grades are calculated.
Data Sources
Water quality data from the EPA Water Quality Portal
Grade thresholds from the EPA National Lakes Assessment (EPA 841-R-24-006, Table 6-3), applied by ecoregion
Most recent sample: 2024-09-09
Monitoring stations: 2