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.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 9 ft | C |
| Phosphorus | No data | |
| Chlorophyll-a (Algae) | No data | |
| Trophic State Index (TSI) | 45 | Mesotrophic |
Moderate nutrients, good water quality
Lake Details
| Characteristic | Value |
|---|---|
| Maximum Depth | 130 ft |
| Average Depth | 42 ft |
| Surface Area | 1.3K acres |
| Shoreline Length | 18.5 mi |
| Littoral Zone | 19% |
| Public Access | Yes |
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).
Estimated open water season: 217 days
| Earliest | Latest | |
|---|---|---|
| Ice-Out | 2012-04-03 (2012) | 2014-05-20 (2014) |
| Ice-In | 2018-11-20 (2018) | 2015-12-26 (2015) |
Most recent ice-out: 2024-04-26
Location
County Ranking
Ranked #92 of 128 lakes in Cook County
Nearby Lakes in Cook County
More Minnesota Lake Rankings
State Parks Near Rove Lake
Other Grade C Lakes in Minnesota
Mesotrophic Lakes in Minnesota
DNR Fisheries Survey Summary
15 surveys on file from MN DNR Fisheries. Most recent: 2025-08-11 (Targeted Survey).
Top Species by Catch Rate
| Species | Avg CPUE | Avg Weight |
|---|---|---|
| Tullibee (Cisco) | 9.17 | 0.69 lb |
| CIS | 7.69 | 0.85 lb |
| Yellow Perch | 2.78 | 0.24 lb |
| Smallmouth Bass | 2.61 | 0.6 lb |
| Lake Trout | 2.54 | 1.74 lb |
| White Sucker | 1.62 | 2.05 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)
CIS
Yellow Perch
Smallmouth Bass
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,…
DNR Reports & Resources
Minnesota DNR LakeFinder publishes lake survey, fish stocking, water access, and aquatic plant data for Rove Lake. 3 reports on file.
- —Fisheries Lake Survey — ClearwaterFisheries Lake Survey · MN DNR LakeFinder
- —Aquatic Plant Report — Clearwater (1828)Aquatic Plant Report · MN DNR LakeFinder
- —Public Water Access Sites — ClearwaterPublic Water Access Sites · MN DNR LakeFinder
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