Little Lake Culvert
Cook County, MinnesotaView mapDirections
No nutrient or algae sampling on record from Minnesota PCA for this lake.
- 6 aquatic invasives
- Public access
- Limited data
Little Lake Culvert in Cook County, Minnesota has water-quality measurements published by Minnesota PCA, shown here as reported.
Little Lake Culvert is a lake in Cook County, Minnesota. Overall water quality is declining over recent sampling years. Limited fish-species data available. Public access is available.
Source: EPA Water Quality Portal sampling records, Minnesota DNR LakeFinder, last sampled 2024-09-09. 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 Little Lake Culvert 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 Little Lake Culvert
These are the measurements Minnesota PCA publishes for Little Lake Culvert, 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 Little Lake Culvert
Answers come straight from the public measurements and survey records on this page.
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Stays near Little Lake Culvert
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Fishing Little Lake Culvert
Invasive & Introduced Species
Red chips are ecologically harmful invasive species. Gray chips are stocked or introduced fish that aren't a current ecological concern.
Water Quality Trend: Worsening
Based on 6 years of monitoring (2020–2025).
Water clarity
Worsening5 years
Phosphorus
Worsening+1.93 µg/L/yr4 years
Chlorophyll-a
Worsening+0.06 µg/L/yr5 years
Nearby Lakes in Cook County
Frequently asked questions about Little Lake Culvert
Where is Little Lake Culvert?
- Little Lake Culvert 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 Little Lake Culvert?
- Little Lake Culvert in Cook County, Minnesota has water-quality measurements published by Minnesota PCA, shown here as reported.
Is Little Lake Culvert safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
Can I fish at Little Lake Culvert?
- Public access to Little Lake Culvert is listed as yes on the lake record. Seasons, size and bag limits, and whether you need a license are set by Minnesota's fish and wildlife agency, so check its current regulations before you go.
Explore Little Lake Culvert across LakeQuality
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Where this data comes from
5 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)
21GPBCH2 samples · 2020
Analytical methods
- Turbidity by Nephelometry
Monitoring station identifiers (2)
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.