Skip to main content
LakeQuality
D

Deer Lake

Wright County, MinnesotaLimited DataEutrophic

On the scoring rubric Deer Lake grades a D: clarity at 5.0 ft and phosphorus readings still being added keep it in the lower bracket for Wright County. Sub-grades cluster within a single letter of each other, which usually means the lake is in stable trophic balance rather than fighting one specific stressor.

A TSI in the eutrophic range signals a lake doing what nutrient-loaded waters do — supporting an active algal community at the cost of clear water. Deer Lake reaches 27 ft at its deepest point — typical for Minnesota mid-sized lakes, with seasonal stratification but limited cold-water refuge. The lake's 171 acres and 2.1 miles of shoreline put it in the mid-range bucket — large enough for varied use, small enough that watershed inputs reach the whole basin. Deer Lake sits at rank 38 of 64 in Wright County, in the lower half of the local distribution.

Deer Lake is on the Minnesota infested-waters list for zebra mussels — boaters should follow clean-drain-dry protocols when moving gear to or from the lake. Walleye are documented at Deer Lake, one of 17 fish species on record for the lake. Public access is available — the lake is on the Minnesota PCA public-access list. 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 2024-10-04. Grade methodology: LakeGrade methodology.

Swimming Safety

Swimming not recommended, poor water quality with high algae risk

Water Quality Grade: D, Poor

Murky, only visible to about 5 ft. Trophic State Index: 54.

MetricValueGrade
Water Clarity (Secchi Depth)5 ftD
PhosphorusNo data
Chlorophyll-a (Algae)No data
Trophic State Index (TSI)54Eutrophic

High nutrients, frequent algae, reduced clarity

Lake Details

CharacteristicValue
Maximum Depth27 ft
Average Depth9 ft
Surface Area171.06 acres
Shoreline Length2.1 mi
Littoral Zone74%
Public AccessYes

Fish Species

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

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

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

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

Invasive Species

Eurasian watermilfoilzebra mussel

Water Quality Trend: Improving

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

MetricTrendChange/YearYears
Water Clarity Improving+0.061 m/yr5

Location

Loading map…

County Ranking

Ranked #38 of 64 lakes in Wright County

Nearby Lakes in Wright County

DNR Fisheries Survey Summary

5 surveys on file from MN DNR Fisheries. Most recent: 2023-08-14 (Standard Survey).

Top Species by Catch Rate

SpeciesAvg CPUEAvg Weight
Black Bullhead102.280.34 lb
Yellow Perch23.900.15 lb
Black Crappie17.050.31 lb
Largemouth Bass16.461.05 lb
Bluegill11.170.25 lb
Pumpkinseed7.810.11 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.

Black Bullhead

150 fish · 514 in · 2023-08-14
33170567891011121314

Yellow Perch

100 fish · 47 in · 2023-08-14
593004567

Black Crappie

100 fish · 512 in · 2023-08-14
40200trophy 1056789101112

Largemouth Bass

100 fish · 320 in · 2023-08-14
1790trophy 20468101214161820

From the 2023-08-14 survey

Deer Lake is located south of the city of Buffalo in Wright County. The lake is 163 acres and has a maximum depth of 27 feet. Deer Lake has a large watershed with land use dominated by agriculture, development, and pasture. A public access is located on the south end near the outlet. Mill Creek flows through Buffalo…

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 Deer 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

Most recent sample: 2024-10-04

Monitoring stations: 1