Turtle Lake East End
Cook County, MinnesotaView mapDirections
No nutrient or algae sampling on record from Minnesota PCA for this lake.
- Limited data
Turtle Lake East End in Cook County, Minnesota has water-quality measurements published by Minnesota PCA, shown here as reported.
Turtle Lake East End 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 2025-09-29. Methodology: how these readings are compared.
Swimming conditions
No readingLimited data
Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
Whether Turtle Lake East End is safe to swim in today is a call for the Minnesota Pollution Control Agency and the Minnesota DNR and the county health department, who post current advisories. LakeQuality does not issue swimming clearances.
Water quality measurements for Turtle Lake East End
These are the measurements Minnesota PCA publishes for Turtle Lake East End, shown as reported. The condition class beside each reading is the EPA National Lakes Assessment class for this lake’s ecoregion.
No clarity data.
Ask about Turtle Lake East End
Answers come straight from the public measurements and survey records on this page.
Water Temperature
Turtle Lake East End typically sits around 57°F at the surface in October. Summer average is about 73°F. Usually warmest in Aug (about 76°F) and coldest in May (about 51°F). These are typical values by month — not a live reading.
Column height runs from this lake’s coldest month (51°F) to its warmest (76°F).
Typical surface water temperature by month, from 68 field readings (2011–2025) via the EPA Water Quality Portal. See the full Turtle Lake East End water temperature breakdown →
Stays via Stay22
Stays near Turtle Lake East End
Compare lakeside cabins, hotels, and vacation rentals near Turtle Lake East End in Cook County, Minnesota — live availability and prices for your trip. Switch the map to Satellite to see the lake and how close each stay is to the water.
Top-rated places to stay near Turtle Lake East End
Prices for Oct 9–11, 4 adults. Change dates on the map below.
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Fishing Turtle Lake East End
Water Quality Trend: Stable
Based on 5 years of monitoring (2020–2025).
Water clarity
Worsening4 years
Phosphorus
Improving-2.78 µg/L/yr4 years
Chlorophyll-a
Stable-0.01 µg/L/yr4 years
Nearby Lakes in Cook County
Frequently asked questions about Turtle Lake East End
Where is Turtle Lake East End?
- Turtle Lake East End is a lake in Cook County, Minnesota. Its water-quality measurements are published by Minnesota PCA and shown on this page as reported.
What is the water quality of Turtle Lake East End?
- Turtle Lake East End in Cook County, Minnesota has water-quality measurements published by Minnesota PCA, shown here as reported.
Is Turtle Lake East End safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
What is the water temperature of Turtle Lake East End?
- Turtle Lake East End typically sits around 57°F at the surface in October, from 68 EPA Water Quality Portal field readings (2011–2025). That is a typical value for the month, not a live reading.
Explore Turtle Lake East End across LakeQuality
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Where this data comes from
13 measurements from 1 monitoring station, 2021–2025. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- Grand Portage Reservation
GPC5_WQX13 samples · 2021–2025
Monitoring station identifiers (1)
EPA condition classes from the National Lakes Assessment (EPA 841-R-24-006, Table 6-3), applied by ecoregion. See where the data comes from and data sources.