Cook County, Minnesota · Water Quality Report Card
Turtle Lake West Pond
Turtle Lake West Pond in Cook County, Minnesota is not rated for water quality — its monitoring record does not meet the evidence bar.
- Trend
- → Stable
Turtle Lake West Pond is a lake in Cook County, Minnesota. Water clarity is declining over recent sampling years.
Source: EPA Water Quality Portal sampling records, Minnesota DNR LakeFinder, last sampled 2025-05-21. 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 Turtle Lake West Pond
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Fishing Turtle Lake West Pond
Water Quality Trend: → Stable
Based on 5 years of monitoring data (2020-2025).
| Metric | Trend | Change/Year | Years |
|---|---|---|---|
| Water Clarity | ↓ Declining | -10.222 m/yr | 4 |
| Phosphorus | ↑ Improving | -2.49 µg/L/yr | 4 |
| Chlorophyll-a | → Stable | -0.03 µg/L/yr | 4 |
Location
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Where this data comes from
3 measurements from 1 monitoring station, 2025. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- Grand Portage Reservation
GPC5_WQX3 samples · 2025
Monitoring station identifiers (1)
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: 2025-05-21
Monitoring stations: 1