Rose Lake
Cook County, Minnesota477 acresView mapDirections
Minnesota PCA publishes the water-quality measurements for Rose Lake. Here is what has been measured.
- 130 ft max depth
- Limited data
Rose Lake in Cook County, Minnesota has water-quality measurements published by Minnesota PCA, shown here as reported. Water clarity: 14.6 ft visibility. Maximum depth: 130 ft. Surface area: 476.95 acres.
Minnesota DNR's Standard Survey on September 10, 2018 caught 0.33 smallmouth bass per gill net at Rose Lake. DNR survey details →
Rose Lake is a 477-acre lake in Cook County, Minnesota with a maximum depth of 130 feet (47-foot average). Overall water quality is declining over recent sampling years. The lake supports 5 documented fish species including cisco species, green sunfish, and lake trout. No public access — the lake is private or restricted.
Source: EPA Water Quality Portal sampling records, Minnesota DNR LakeFinder, last sampled 2025-07-01. Methodology: how these readings are compared.
What Rose Lake is good for
From access and monitoring records, not editorial picks.
- Clear water14.6 ft of visibility
- Fishing5 species recorded
- Deep water130 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 Rose 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 Rose Lake
These are the measurements Minnesota PCA publishes for Rose Lake, shown as reported. The condition class beside each reading is the EPA National Lakes Assessment class for this lake’s ecoregion.
Good clarity, visible to about 14.6 ft. TSI 38.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | 14.6ft | 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. | 38 | Oligotrophic OligotrophicMesotrophicEutrophicHypereutrophic |
Low nutrients, clear water. No reading is a swimming clearance.
Ask about Rose Lake
Answers come straight from the public measurements and survey records on this page.
Minnesota DNR's Standard Survey on September 10, 2018 caught 0.33 smallmouth bass per gill net at Rose Lake.
A DNR fisheries survey reports fish abundance and catch rates, not water quality. LakeQuality shows Rose Lake’s water-quality measurements separately, and the water-quality trend over 3 years of monitoring is declining. Catch rate is not a swim clearance and is not a weekly bite report.
DNR Fisheries Survey Summary
7 surveys on file from MN DNR Fisheries. Most recent: 2025-08-11 (Targeted Survey).
7 surveys on file · most recent 2025-08-11 (Targeted Survey)
| Species | Catch rate (CPUE) | Size | Avg weight |
|---|---|---|---|
| Tullibee (Cisco) | 12.04 | 8–17 in 2001-08-06 | 0.74 lb |
| Green Sunfish | 3.40 | 5 in 2018-09-10 | 0.11 lb |
| White Sucker | 3.33 | 14–21 in 2018-09-10 | 2.41 lb |
| Yellow Perch | 3.25 | 5–10 in 2013-08-12 | 0.31 lb |
| Lake Trout | 2.05 | 9–35 in 2018-09-10 | 2.52 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.
Tullibee (Cisco)
Green Sunfish
White Sucker
Yellow Perch
From the 2025-08-11 survey
Temperature and dissolved oxygen (DO) measurements were collected from the deepest basin in Duncan Lake on August 11th, 2025, 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 (Cisco, also known…
DNR Reports & Resources
Minnesota DNR LakeFinder publishes lake survey, fish stocking, water access, and aquatic plant data for Rose Lake. 1 report on file.
These links open on the official state DNR websites (Wisconsin DNR survey PDFs · Minnesota DNR LakeFinder).
- —Fisheries Lake Survey — DuncanFisheries Lake Survey · MN DNR LakeFinder
Lake Details
Max depth
130 ft
Average depth
46.8 ft
Surface area
477 acres
Shoreline
7.6 mi
Littoral zone
31%
Share shallower than 15 ft
Public access
No
Listed by Minnesota PCA
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Stays near Rose Lake
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Fish Species
Click a species to see every lake where it is documented.
Fishing Rose Lake
Water quality readings over time
3 seasons of samples on record (2020–2025). Calling a direction takes at least 4 years of the same measurement.
Water clarity
Worsening3 years
Nearby Lakes in Cook County
Frequently asked questions about Rose Lake
Where is Rose Lake?
- Rose 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 Rose Lake?
- Rose Lake in Cook County, Minnesota has water-quality measurements published by Minnesota PCA, shown here as reported. Water clarity: 14.6 ft visibility. Maximum depth: 130 ft. Surface area: 476.95 acres.
Is Rose Lake safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
How deep is Rose Lake?
- Rose Lake has a maximum depth of 130 feet and an average depth of 46.8 feet. The lake covers 476.95 acres.
What fish are in Rose Lake?
- Fish species found in Rose Lake include cisco species, green sunfish, lake trout, smallmouth bass, white sucker. Rose Lake is located in Cook County, Minnesota.
What did the DNR fisheries survey find at Rose Lake?
- Minnesota DNR's Standard Survey on September 10, 2018 caught 0.33 smallmouth bass per gill net at Rose Lake. A DNR fisheries survey reports fish abundance and catch rates, not water quality. LakeQuality shows Rose Lake’s water-quality measurements separately, and the water-quality trend over 3 years of monitoring is declining. Catch rate is not a swim clearance and is not a weekly bite report.
Can I fish at Rose Lake?
- Public access to Rose 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 Rose Lake across LakeQuality
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Where this data comes from
5 measurements from 2 monitoring stations, 2020–2025. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- Minnesota Pollution Control Agency - Ambient Surface Water
MNPCA5 samples · 2020–2025
Analytical methods
- Field measurement/observation, generic method
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
Lake details from Minnesota DNR LakeFinder