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LakeQuality
A

Fox Lake

Becker County, MinnesotaMesotrophic

Fox Lake earns an A — water clarity, phosphorus, and chlorophyll-a all rate among the best monitored waters in Becker County. Clarity, phosphorus, and chlorophyll-a all rate similarly, so there is no obvious single lever to pull on watershed management.

A TSI near 41 places Fox Lake in the mesotrophic band — moderate productivity, with seasonal swings between clearer spring water and richer late-summer conditions. Fox Lake reaches 24 ft at its deepest point — typical for Minnesota mid-sized lakes, with seasonal stratification but limited cold-water refuge. At 143 acres, Fox Lake fits the Minnesota median for monitored lakes, with 2.4 miles of shoreline. Among the 93 graded lakes in Becker County, Fox Lake ranks 23 — in the top quartile locally.

Zebra mussel presence at Fox Lake means the lake's clarity numbers carry an asterisk — filtered water is not the same as nutrient-poor water. The fishery includes walleye alongside the lake's other 13 documented species — a notable draw for Minnesota anglers. The lake lacks a documented public access point, so visitor use is limited. The lake has a long ice-out record — 45 observations on file, with a median ice-out around Apr 14. 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 2024-09-30. Grade methodology: LakeGrade methodology.

Swimming Safety

Excellent for swimming, crystal clear water with minimal algae

Water Quality Grade: A, Excellent

Good clarity, visible to about 13.5 ft. Phosphorus level: 14.5 µg/L. Trophic State Index: 41.

MetricValueGrade
Water Clarity (Secchi Depth)13.5 ftB
Phosphorus14.5 µg/LA
Chlorophyll-a (Algae)No data
Trophic State Index (TSI)41Mesotrophic

Moderate nutrients, good water quality

Lake Details

CharacteristicValue
Maximum Depth24 ft
Surface Area143.34 acres
Shoreline Length2.4 mi
Littoral Zone60%
Public AccessNo

Fish Species

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

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

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

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

Invasive Species

zebra mussel

Water Quality Trend: Improving

Based on 5 years of monitoring data (2020-2025).

MetricTrendChange/YearYears
Water Clarity Improving+0.093 m/yr5
Phosphorus Improving-0.95 µg/L/yr5

Ice Season

Historical ice data from Minnesota DNR (90 observations).

Typical Ice-Out
Apr 14
Typical Ice-In
Nov 19

Estimated open water season: 219 days

EarliestLatest
Ice-Out2000-02-28 (2000)2014-05-24 (2014)
Ice-In1991-11-03 (1991)2001-12-07 (2001)

Most recent ice-out: 2024-04-03

Location

Loading map…

County Ranking

Ranked #23 of 93 lakes in Becker County

Nearby Lakes in Becker County

DNR Fisheries Survey Summary

6 surveys on file from MN DNR Fisheries. Most recent: 1999-06-28 (Standard Survey).

Top Species by Catch Rate

SpeciesAvg CPUEAvg Weight
Bluegill34.610.19 lb
White Sucker9.012.29 lb
Hybrid Sunfish6.830.34 lb
Yellow Perch5.650.11 lb
Northern Pike5.311.9 lb
Walleye4.220.98 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

479 fish · 18 in · 1999-06-28
17186012345678

White Sucker

74 fish · 620 in · 1999-06-28
2412068101214161820

Hybrid Sunfish

15 fish · 39 in · 1999-06-28
630trophy 103456789

Yellow Perch

32 fish · 16 in · 1999-06-28
19100123456

From the 1999-06-28 survey

Fox Lake is a small, heavily-developed lake. The number of shoreline homes or cottages more than double from 24 in 1966 to 55 in 1999. Fishing pressure has likely increased, as well, and the fish community is showing signs of over fishing.With a few exceptions, fish numbers remain much as they were forty years ago.…

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 Fox Lake. 2 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: 2024-09-30

Monitoring stations: 1