Pfeiffer Lake
St. Louis County, Minnesota58 acresView mapDirections
No nutrient or algae sampling on record from Minnesota PCA for this lake.
- Impaired · Mercury
- Public access
Pfeiffer Lake in St. Louis County, Minnesota has water-quality measurements published by Minnesota PCA, shown here as reported. Surface area: 58 acres.
Pfeiffer Lake is a 58-acre lake in St. Louis County, Minnesota. Limited fish-species data available. Public access is available with 1 public boat landing.
Source: EPA Water Quality Portal sampling records, Minnesota DNR LakeFinder. Methodology: how these readings are compared.
What Pfeiffer Lake is good for
From access and monitoring records, not editorial picks.
- Boat launch1 documented ramp
- Camping1 public campground nearby
Swimming conditions
No readingNot rated
Nutrient and algae readings are not a swimming clearance. Pfeiffer Lake is listed impaired under Clean Water Act §303(d) (IR 4A) for mercury. Check local advisories before you swim.
Whether Pfeiffer Lake 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 Pfeiffer Lake
These are the measurements Minnesota PCA publishes for Pfeiffer Lake, shown as reported. The condition class beside each reading is the EPA National Lakes Assessment class for this lake’s ecoregion.
No clarity data. TSI undefined.
Ask about Pfeiffer Lake
Answers come straight from the public measurements and survey records on this page.
Lake Details
Surface area
58 acres
Public access
Yes
Listed by Minnesota PCA
No bathymetric survey has been published for Pfeiffer Lake, so its depth is not documented here.
Recreation & Access
- Pfeiffer LakePublic
Named access points in the USGS National Boat Ramps inventory, within about 3 miles. More lakes with boat ramps
Public campgrounds near Pfeiffer Lake
- Pfeiffer Lake Campground0.6 km
Nearest public campgrounds in the USGS National Map inventory, within about 3 miles. An empty list means USGS records no campground that close, which is not the same as camping being unavailable. Where the source gives an official reservation link, it is used; the cabin and hotel search does not cover campsites. More camping lakes
Stays via Stay22
Stays near Pfeiffer Lake
Compare lakeside cabins, hotels, and vacation rentals near Pfeiffer Lake in St. Louis 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 Pfeiffer Lake
Prices for Oct 16–18, 4 adults. Change dates on the map below.
Availability and prices from Stay22 partners (Booking.com, Vrbo, Expedia). We may earn a commission from bookings, at no extra cost to you.
Planning a whole trip? See where to stay at Minnesota’s top lakes →
Follow Pfeiffer Lake’s readings
Email me when new measurements post for this lake. Updates stay free.
Or email
Fishing Pfeiffer Lake
EPA Impairment Status
Pfeiffer Lake is officially listed as impaired under Clean Water Act §303(d) in the 2024 EPA reporting cycle (IR category 4A).
Causes of impairment
Designated uses not supporting: Fish consumption.
A Total Maximum Daily Load (TMDL) plan has been approved.
Source: EPA ATTAINS assessment unit MN69-0671-00 · Official waterbody report
Nearby Lakes in St. Louis County
Frequently asked questions about Pfeiffer Lake
Where is Pfeiffer Lake?
- Pfeiffer Lake is a lake in St. Louis County, Minnesota. Its water-quality measurements are published by Minnesota PCA and shown on this page as reported.
What is the water quality of Pfeiffer Lake?
- Pfeiffer Lake in St. Louis County, Minnesota has water-quality measurements published by Minnesota PCA, shown here as reported. Surface area: 58 acres.
Is Pfeiffer Lake safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Pfeiffer Lake is listed impaired under Clean Water Act §303(d) (IR 4A) for mercury. Check local advisories before you swim.
Are there boat ramps on Pfeiffer Lake?
- Pfeiffer Lake has 1 documented boat landing in the USGS National Boat Ramps inventory. Named access points include Pfeiffer Lake. Public access is listed as yes.
Can I fish at Pfeiffer Lake?
- Pfeiffer Lake has 1 documented boat landing in the USGS National Boat Ramps inventory. 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.
Are there campgrounds on Pfeiffer Lake?
- Pfeiffer Lake has 1 public campground from USGS The National Map within 5 km, including Pfeiffer Lake Campground. This is a location join, not a booking. Cabins and hotels are listed separately; campsite reservations use the official link when the source provides one.
Explore Pfeiffer Lake across LakeQuality
Fish species and the cleanest lakes across Minnesota
Fish species and best lakes in St. Louis County
Species activity outlook by water temperature and season
Top lakes and where to stay in the Lake Vermilion Area area
Where to stay at Minnesota's top lakes, each with its readings
Lakes in the Lake Superior Basin (MN+WI), ranked by water quality
Lakes in the Rainy Lake Watershed, ranked by water quality
Minnesota's cleanest lakes, ranked on agency measurements
More lakes in Minnesota
State Parks Near Pfeiffer Lake
Other Lakes in Minnesota
Where this data comes from
Measurements for Pfeiffer Lake come from the EPA Water Quality Portal. Per-sample source details are not recorded for this lake.
Other records on this page
Impairment status from EPA ATTAINS 303(d) database
Lake details from Minnesota DNR LakeFinder
Named boat-access points from the USGS National Boat Ramps inventory
Public campgrounds from USGS The National Map Structures, within about 3 miles