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LakeQuality
C

Rove Lake

Cook County, MinnesotaLimited DataMesotrophic

Rove Lake sits at a C on the grading scale — not impaired, not pristine, with summer measurements that vary year to year. The three sub-grades — clarity, phosphorus, and chlorophyll-a — track close together, so no single parameter is dragging the average.

The lake sits in the mesotrophic zone — the band where most well-managed Minnesota lakes fall. The lake's 130 ft maximum depth is in the upper tier for Minnesota — deep enough for cold-water fish to find refuge in summer. With 1,344 acres of surface and 18.5 miles of shoreline, Rove Lake is a large water by Minnesota standards — recreational pressure is spread across a long shoreline. Within Cook County's 128 graded lakes, Rove Lake ranks 92 — below the local median, though not at the bottom.

Rove Lake has no invasive species recorded in Minnesota state databases as of 2024, though prevention practices still apply at all access points. The fishery is bass-led, with 7 documented species across the lake's records. A documented public access point at Rove Lake makes the lake usable for shore fishing, paddle craft, and trailered boats. Ice-out has been logged at Rove Lake more than two dozen times, putting the median around May 5 — a useful baseline for tracking climate trends. Monitoring depth is thin here: the LakeGrade rubric is applied to a small number of sample years, and the grade will be revised as more data accumulates.

Source: EPA Water Quality Portal sampling records, Minnesota DNR LakeFinder, last sampled 2024-07-30. Grade methodology: LakeGrade methodology.

Swimming Safety

Generally safe for swimming, moderate water quality

Water Quality Grade: C, Fair

Moderate clarity, visible to about 9 ft. Trophic State Index: 45.

MetricValueGrade
Water Clarity (Secchi Depth)9 ftC
PhosphorusNo data
Chlorophyll-a (Algae)No data
Trophic State Index (TSI)45Mesotrophic

Moderate nutrients, good water quality

Lake Details

CharacteristicValue
Maximum Depth130 ft
Average Depth42 ft
Surface Area1.3K acres
Shoreline Length18.5 mi
Littoral Zone19%
Public AccessYes

Fish Species

Click a species to see all Minnesota and Wisconsin lakes where it is found.

→ Best fishing times for Rove Lake (14-day solunar calendar)

→ Is it safe to eat fish from Rove Lake? (mercury & PFAS guide)

Rove Lake fishing regulations (limits, seasons, special rules)

Ice Season

Historical ice data from Minnesota DNR (51 observations).

Typical Ice-Out
May 5
Typical Ice-In
Dec 8

Estimated open water season: 217 days

EarliestLatest
Ice-Out2012-04-03 (2012)2014-05-20 (2014)
Ice-In2018-11-20 (2018)2015-12-26 (2015)

Most recent ice-out: 2024-04-26

Location

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County Ranking

Ranked #92 of 128 lakes in Cook County

Nearby Lakes in Cook County

DNR Fisheries Survey Summary

15 surveys on file from MN DNR Fisheries. Most recent: 2025-08-11 (Targeted Survey).

Top Species by Catch Rate

SpeciesAvg CPUEAvg Weight
Tullibee (Cisco)9.170.69 lb
CIS7.690.85 lb
Yellow Perch2.780.24 lb
Smallmouth Bass2.610.6 lb
Lake Trout2.541.74 lb
White Sucker1.622.05 lb

CPUE = catch per unit effort, averaged across surveys (excludes juvenile shoreline seining). Higher CPUE = more abundant in standardized sampling.

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)

159 fish · 820 in · 2005-07-18
50250891011121314151617181920

CIS

92 fish · 819 in · 2020-08-03
301508910111213141516171819

Yellow Perch

86 fish · 611 in · 2020-08-03
39200trophy 1267891011

Smallmouth Bass

10 fish · 718 in · 2020-08-03
210trophy 18789101112131415161718

From the 2025-08-11 survey

Temperature and dissolved oxygen measurements were collected from the deepest basin in Clearwater Lake on August 11th, 2025. This was done 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,…

Source: MN DNR LakeFinder Fisheries Lake Survey

DNR Reports & Resources

Minnesota DNR LakeFinder publishes lake survey, fish stocking, water access, and aquatic plant data for Rove Lake. 3 reports on file.

Data Sources

Water quality data from the EPA Water Quality Portal

Grading methodology based on Metropolitan Council standards

Lake details from Minnesota DNR LakeFinder

Ice data from Minnesota DNR Climate

Most recent sample: 2024-07-30

Monitoring stations: 1