Peter Lake
Cook County, Minnesota282 acresView mapDirections
Minnesota PCA publishes the water-quality measurements for Peter Lake. Here is what has been measured.
- 120 ft max depth
- Limited data
Peter Lake in Cook County, Minnesota has water-quality measurements published by Minnesota PCA, shown here as reported. Water clarity: 22.5 ft visibility. Maximum depth: 120 ft. Surface area: 281.98 acres.
Minnesota DNR's Standard Survey on September 19, 2018 caught 17.00 lake trout per gill net at Peter Lake. Length samples in the latest survey that recorded them ran 6–18 inches. DNR survey details →
Peter Lake is a 282-acre lake in Cook County, Minnesota with a maximum depth of 120 feet. The lake supports 4 documented fish species including burbot, lake trout, and white sucker. No public access — the lake is private or restricted.
Source: EPA Water Quality Portal sampling records, Minnesota DNR LakeFinder, last sampled 2020-08-02. Methodology: how these readings are compared.
What Peter Lake is good for
From access and monitoring records, not editorial picks.
- Clear water22.5 ft of visibility
- Fishing4 species recorded
- Deep water120 ft surveyed max depth
Swimming conditions
No readingLimited data
Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
Whether Peter 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 Peter Lake
These are the measurements Minnesota PCA publishes for Peter Lake, shown as reported. The condition class beside each reading is the EPA National Lakes Assessment class for this lake’s ecoregion.
Crystal clear, you can see 22.5 ft down. TSI 32.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | 22.5ft | Measured, not scored How deep a black-and-white disk stays visible from the surface. Higher is clearer. |
| Total phosphorus | No reading The nutrient that most limits algae growth in freshwater. More phosphorus, more algae potential. | |
| Chlorophyll-a (algae) | No reading The green pigment in algae — a direct measure of how much algae is in the water. | |
| Trophic state (TSI)Carlson's 0–100 index of how much algae a lake can support, from clarity, phosphorus and chlorophyll-a. | 32 | Oligotrophic OligotrophicMesotrophicEutrophicHypereutrophic |
Low nutrients, clear water. No reading is a swimming clearance.
Ask about Peter Lake
Answers come straight from the public measurements and survey records on this page.
Minnesota DNR's Standard Survey on September 19, 2018 caught 17.00 lake trout per gill net at Peter Lake. Length samples in the latest survey that recorded them ran 6–18 inches.
A DNR fisheries survey reports fish abundance and catch rates, not water quality. LakeQuality shows Peter Lake’s water-quality measurements separately. Catch rate is not a swim clearance and is not a weekly bite report.
DNR Fisheries Survey Summary
4 surveys on file from MN DNR Fisheries. Most recent: 2024-08-06 (Targeted Survey).
4 surveys on file · most recent 2024-08-06 (Targeted Survey)
| Species | Catch rate (CPUE) | Size | Avg weight |
|---|---|---|---|
| White Sucker | 11.35 | 10–19 in 2018-09-19 | 1.72 lb |
| Lake Trout | 10.86 | 6–18 in 2018-09-19 | 1.08 lb |
| Yellow Perch | 1.03 | 6 in 2018-09-19 | 0.13 lb |
CPUE = catch per unit effort, fish caught per net per set in a standardised survey. It measures abundance, not size, and is not a weekly bite report.
Length Distributions
Number of fish caught at each inch class in the most recent survey that recorded lengths. Red dashed line marks an approximate trophy threshold for that species.
White Sucker
Lake Trout
Yellow Perch
From the 2024-08-06 survey
Temperature and dissolved oxygen measurements were collected in the deepest basin in Peter Lake on August 6, 2024, to evaluate the quantity and quality of cold, oxygenated water (i.e., oxythermal habitat) available to Lake Trout, the most sensitive coldwater species present in this lake. During the summer, Lake Trout…
DNR Reports & Resources
Minnesota DNR LakeFinder publishes lake survey, fish stocking, water access, and aquatic plant data for Peter Lake. 1 report on file.
These links open on the official state DNR websites (Wisconsin DNR survey PDFs · Minnesota DNR LakeFinder).
- —Fisheries Lake Survey — PeterFisheries Lake Survey · MN DNR LakeFinder
Lake Details
Max depth
120 ft
Surface area
282 acres
Shoreline
6.7 mi
Littoral zone
25%
Share shallower than 15 ft
Public access
No
Listed by Minnesota PCA
Lake Size & Watershed
Watershed (drainage) area
4 sq mi
HydroLAKES / HydroSHEDS
Elevation
1,598 ft
Size, shoreline, and watershed area from HydroLAKES (HydroSHEDS).
Stays via Stay22
Stays near Peter Lake
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Fish Species
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Fishing Peter Lake
Nearby Lakes in Cook County
Frequently asked questions about Peter Lake
Where is Peter Lake?
- Peter Lake 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 Peter Lake?
- Peter Lake in Cook County, Minnesota has water-quality measurements published by Minnesota PCA, shown here as reported. Water clarity: 22.5 ft visibility. Maximum depth: 120 ft. Surface area: 281.98 acres.
Is Peter Lake safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
How deep is Peter Lake?
- Peter Lake has a maximum depth of 120 feet. The lake covers 281.98 acres.
What fish are in Peter Lake?
- Fish species found in Peter Lake include burbot, lake trout, white sucker, yellow perch. Peter Lake is located in Cook County, Minnesota.
What did the DNR fisheries survey find at Peter Lake?
- Minnesota DNR's Standard Survey on September 19, 2018 caught 17.00 lake trout per gill net at Peter Lake. Length samples in the latest survey that recorded them ran 6–18 inches. A DNR fisheries survey reports fish abundance and catch rates, not water quality. LakeQuality shows Peter Lake’s water-quality measurements separately. Catch rate is not a swim clearance and is not a weekly bite report.
Can I fish at Peter Lake?
- Public access to Peter Lake is listed as no on the lake record, so confirm before you make the trip. 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 Peter Lake across LakeQuality
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Species activity outlook by water temperature and season
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Where this data comes from
1 measurement from 1 monitoring station, 2020. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- Minnesota Pollution Control Agency - Ambient Surface Water
MNPCA1 sample · 2020
Analytical methods
- Field measurement/observation, generic method
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.
Other records on this page
Lake size & watershed from HydroLAKES (HydroSHEDS)
Lake details from Minnesota DNR LakeFinder