Little Lake Inlet
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 Inlet in Cook County, Minnesota has water-quality measurements published by Minnesota PCA, shown here as reported.
Little Lake Inlet 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 Inlet 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 Inlet
These are the measurements Minnesota PCA publishes for Little Lake Inlet, 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 Inlet
Answers come straight from the public measurements and survey records on this page.
Water Temperature
Little Lake Inlet typically sits around 56°F at the surface in October. Summer average is about 57°F. Usually warmest in Jul (about 64°F) and coldest in Jun (about 46°F). These are typical values by month — not a live reading.
Column height runs from this lake’s coldest month (46°F) to its warmest (64°F).
Typical surface water temperature by month, from 84 field readings (2010–2024) via the EPA Water Quality Portal. See the full Little Lake Inlet water temperature breakdown →
DNR Reports & Resources
Minnesota DNR LakeFinder publishes lake survey, fish stocking, water access, and aquatic plant data for Little Lake Inlet. 2 reports on file.
These links open on the official state DNR websites (Wisconsin DNR survey PDFs · Minnesota DNR LakeFinder).
- —Fish Stocking History — SuperiorFish Stocking History · MN DNR LakeFinder
- —Public Water Access Sites — SuperiorPublic Water Access Sites · MN DNR LakeFinder
Stays via Stay22
Stays near Little Lake Inlet
Compare lakeside cabins, hotels, and vacation rentals near Little Lake Inlet 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 Little Lake Inlet
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Follow Little Lake Inlet’s readings
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Fishing Little Lake Inlet
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 5 years of monitoring (2020–2025).
Water clarity
Worsening4 years
Phosphorus
Worsening+2.28 µg/L/yr2 years
Chlorophyll-a
Worsening+0.1 µg/L/yr3 years
Regulated Pollution Sources Nearby
1 EPA-permitted facility operate within about 5 miles of Little Lake Inlet under Clean Water Act (NPDES) discharge permits. 1 facility has a reported Clean Water Act violation in the past three years.
- Grand Portage Wastewater Stabilization LagoonGrand Portage · 1.4 mi away · NPDES MN0025887Recent violation
Facilities permitted to discharge under the Clean Water Act within ~5 miles; proximity does not by itself mean a facility affects this lake. Source: EPA ECHO (ICIS-NPDES), as of 2026-07.
Nearby Lakes in Cook County
Frequently asked questions about Little Lake Inlet
Where is Little Lake Inlet?
- Little Lake Inlet 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 Inlet?
- Little Lake Inlet in Cook County, Minnesota has water-quality measurements published by Minnesota PCA, shown here as reported.
Is Little Lake Inlet 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 Little Lake Inlet?
- Little Lake Inlet typically sits around 56°F at the surface in October, from 84 EPA Water Quality Portal field readings (2010–2024). That is a typical value for the month, not a live reading.
Can I fish at Little Lake Inlet?
- Public access to Little Lake Inlet 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 Inlet across LakeQuality
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Where this data comes from
7 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_WQX5 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.
Other records on this page
Regulated discharger data from EPA ECHO (ICIS-NPDES)