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D

Hatchet Lake

Lake County, MinnesotaLimited DataEutrophic

On the scoring rubric Hatchet Lake grades a D: clarity at 5.5 ft and phosphorus readings still being added keep it in the lower bracket for Lake County.

Eutrophic conditions are the baseline here: clarity drops noticeably in late summer, and dissolved oxygen near the bottom can become a concern. Hatchet Lake reaches 40 ft at its deepest point — typical for Minnesota mid-sized lakes, with seasonal stratification but limited cold-water refuge. At 127 acres, Hatchet Lake fits the Minnesota median for monitored lakes, with 3.5 miles of shoreline. Hatchet Lake ranks 124 of 142 in Lake County — at the lower end of the locally monitored distribution.

Hatchet Lake has no invasive species recorded in Minnesota state databases as of 2023, though prevention practices still apply at all access points. The state fisheries records do not list documented species for Hatchet Lake, which usually reflects a lack of formal fisheries survey work rather than an empty lake. No formal public access is documented at Hatchet Lake — most use is by shoreline residents and their guests. 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 2023-07-07. Grade methodology: LakeGrade methodology.

Reviewed by LakeQuality Editorial Team · Updated

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Swimming Safety

Swimming not recommended, poor water quality with high algae risk

Water Quality Grade: D, Poor

Murky, only visible to about 5.5 ft. Trophic State Index: 53.

MetricValueGrade
Water Clarity (Secchi Depth)5.5 ftD
PhosphorusNo data
Chlorophyll-a (Algae)No data
Trophic State Index (TSI)53Eutrophic

High nutrients, frequent algae, reduced clarity

Lake Details

CharacteristicValue
Maximum Depth40 ft
Surface Area126.9 acres
Shoreline Length3.5 mi
Littoral Zone84%
Public AccessNo

Water Quality Trend: Declining

Based on 4 years of monitoring data (2020-2025).

MetricTrendChange/YearYears
Water Clarity Declining-0.253 m/yr4
See year-by-year chart →

Location

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County Ranking

Ranked #124 of 142 lakes in Lake County

Nearby Lakes in Lake County

DNR Fisheries Survey Summary

1 survey on file from MN DNR Fisheries. Most recent: 1972-07-17 (Standard Survey).

Top Species by Catch Rate

SpeciesAvg CPUEAvg Weight
Walleye8.570.87 lb
White Sucker5.572 lb
Northern Pike0.713.36 lb
Yellow Perch0.570.3 lb
Tullibee (Cisco)0.290.1 lb

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

From the 1972-07-17 survey

Lots of small walleyes, but do not appear to be stunted. Enough food in stomachs; all small Minnows- 2

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 Hatchet Lake. 1 report on file.

EPA Impairment Status

Hatchet Lake is officially listed as impaired under Clean Water Act §303(d) in the 2024 EPA reporting cycle (IR category 4A).

Causes of impairment

Mercury

A Total Maximum Daily Load (TMDL) plan has been approved.

Source: EPA ATTAINS assessment unit MN38-0400-00 · Official waterbody report · Matched by proximity (1.71 km)

Data Sources

Water quality data from the EPA Water Quality Portal

Impairment status from EPA ATTAINS 303(d) database

Grading methodology based on Metropolitan Council standards

Lake details from Minnesota DNR LakeFinder

Most recent sample: 2023-07-07

Monitoring stations: 2