Connors Lake
Itasca County, MinnesotaLimited DataMesotrophic
Connors Lake comes in at a B on the grading rubric — a respectable showing for a Minnesota lake of its size and depth.
The lake sits in the mesotrophic zone — the band where most well-managed Minnesota lakes fall. At 68 ft of maximum depth, Connors Lake stratifies reliably through the summer — the hypolimnion stays cooler and clearer than the surface layer suggests. At 142 acres, Connors Lake fits the Minnesota median for monitored lakes, with 2.8 miles of shoreline. Within Itasca County's 141 graded lakes, Connors Lake ranks 78 — below the local median, though not at the bottom.
Connors Lake has no invasive species recorded in Minnesota state databases as of 2024, though prevention practices still apply at all access points. The fishery includes walleye among the lake's 10 documented species — a notable draw for Minnesota anglers. No formal public access is documented at Connors Lake — most use is by shoreline residents and their guests. The lake has a partial ice record — 17 observed ice-outs, centered near Apr 24. The grade is based on limited monitoring — fewer than three independent measurement years contribute, so future updates may shift the letter.
Source: EPA Water Quality Portal sampling records, Minnesota DNR LakeFinder, last sampled 2024-08-13. Grade methodology: LakeGrade methodology.
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Swimming Safety
Good for swimming, clear water with low algae levels
Water Quality Grade: B, Good
Good clarity, visible to about 10.5 ft. Trophic State Index: 43.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 10.5 ft | B |
| Phosphorus | No data | |
| Chlorophyll-a (Algae) | No data | |
| Trophic State Index (TSI) | 43 | Mesotrophic |
Moderate nutrients, good water quality
Lake Details
| Characteristic | Value |
|---|---|
| Maximum Depth | 68 ft |
| Surface Area | 141.76 acres |
| Shoreline Length | 2.8 mi |
| Littoral Zone | 29% |
| Public Access | No |
Fish Species
Click a species to see all Minnesota and Wisconsin lakes where it is found.
→ Best fishing times for Connors Lake (14-day solunar calendar)
→ Is it safe to eat fish from Connors Lake? (mercury & PFAS guide)
→ Connors Lake fishing regulations (limits, seasons, special rules)
Water Quality Trend: ↓ Declining
Based on 5 years of monitoring data (2020-2025).
| Metric | Trend | Change/Year | Years |
|---|---|---|---|
| Water Clarity | ↓ Declining | -0.072 m/yr | 5 |
Ice Season
Historical ice data from Minnesota DNR (26 observations).
Estimated open water season: 213 days
| Earliest | Latest | |
|---|---|---|
| Ice-Out | 2012-03-24 (2012) | 2013-05-11 (2013) |
| Ice-In | 2017-11-05 (2017) | 2024-12-08 (2024) |
Most recent ice-out: 2024-04-06
Location
County Ranking
Ranked #78 of 141 lakes in Itasca County
Cleaner Lakes Within 30 Miles
Connors Lake holds Grade B. 5 nearby lakes hold higher grades.
Nearby Lakes in Itasca County
More Minnesota Lake Rankings
State Parks Near Connors Lake
Other Grade B Lakes in Minnesota
Mesotrophic Lakes in Minnesota
DNR Fisheries Survey Summary
3 surveys on file from MN DNR Fisheries. Most recent: 2007-09-04 (Standard Survey).
Top Species by Catch Rate
| Species | Avg CPUE | Avg Weight |
|---|---|---|
| Bluegill | 13.13 | 0.15 lb |
| Yellow Perch | 9.63 | 0.13 lb |
| Yellow Bass | 6.44 | 0.78 lb |
| Black Crappie | 1.95 | 0.34 lb |
| Pumpkinseed | 1.75 | 0.23 lb |
| Northern Pike | 1.66 | 2.54 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.
Bluegill
Yellow Perch
Yellow Bass
Black Crappie
From the 2007-09-04 survey
Connors Lake is located 2 miles north of Bigfork, MN in the Big Fork River watershed. The lake has a surface area of 135 acres and a maximum depth of 68 feet. Connors Lake is in ecological lake class #20. Other area lakes in this class include Bustic, Brush Shanty and Noma Lakes. The northern pike gill-net catch rate…
DNR Reports & Resources
Minnesota DNR LakeFinder publishes lake survey, fish stocking, water access, and aquatic plant data for Connors Lake. 2 reports on file.
- —Fisheries Lake Survey — ConnorsFisheries Lake Survey · MN DNR LakeFinder
- —Aquatic Plant Report — Connors (0716)Aquatic Plant Report · 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: 2024-08-13
Monitoring stations: 1