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.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 13.5 ft | B |
| Phosphorus | 14.5 µg/L | A |
| Chlorophyll-a (Algae) | No data | |
| Trophic State Index (TSI) | 41 | Mesotrophic |
Moderate nutrients, good water quality
Lake Details
| Characteristic | Value |
|---|---|
| Maximum Depth | 24 ft |
| Surface Area | 143.34 acres |
| Shoreline Length | 2.4 mi |
| Littoral Zone | 60% |
| Public Access | No |
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
Water Quality Trend: ↑ Improving
Based on 5 years of monitoring data (2020-2025).
| Metric | Trend | Change/Year | Years |
|---|---|---|---|
| Water Clarity | ↑ Improving | +0.093 m/yr | 5 |
| Phosphorus | ↑ Improving | -0.95 µg/L/yr | 5 |
Ice Season
Historical ice data from Minnesota DNR (90 observations).
Estimated open water season: 219 days
| Earliest | Latest | |
|---|---|---|
| Ice-Out | 2000-02-28 (2000) | 2014-05-24 (2014) |
| Ice-In | 1991-11-03 (1991) | 2001-12-07 (2001) |
Most recent ice-out: 2024-04-03
Location
County Ranking
Ranked #23 of 93 lakes in Becker County
Nearby Lakes in Becker County
More Minnesota Lake Rankings
State Parks Near Fox Lake
Other Grade A Lakes in Minnesota
Mesotrophic Lakes in Minnesota
DNR Fisheries Survey Summary
6 surveys on file from MN DNR Fisheries. Most recent: 1999-06-28 (Standard Survey).
Top Species by Catch Rate
| Species | Avg CPUE | Avg Weight |
|---|---|---|
| Bluegill | 34.61 | 0.19 lb |
| White Sucker | 9.01 | 2.29 lb |
| Hybrid Sunfish | 6.83 | 0.34 lb |
| Yellow Perch | 5.65 | 0.11 lb |
| Northern Pike | 5.31 | 1.9 lb |
| Walleye | 4.22 | 0.98 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
White Sucker
Hybrid Sunfish
Yellow Perch
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.…
DNR Reports & Resources
Minnesota DNR LakeFinder publishes lake survey, fish stocking, water access, and aquatic plant data for Fox Lake. 2 reports on file.
- —Fisheries Lake Survey — FoxFisheries Lake Survey · MN DNR LakeFinder
- —Fish Stocking History — FoxFish Stocking History · 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: 2024-09-30
Monitoring stations: 1