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D

Becker Lake

Stearns County, MinnesotaLimited DataEutrophic

Becker Lake pulls a D on the LakeGrade rubric — phosphorus loading and limited clarity hold it below the Minnesota average.

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. Becker Lake reaches 20 ft at its deepest point — typical for Minnesota mid-sized lakes, with seasonal stratification but limited cold-water refuge. The lake's 221 acres and 5.9 miles of shoreline put it in the mid-range bucket — large enough for varied use, small enough that watershed inputs reach the whole basin. Becker Lake ranks 43 of 55 in Stearns County — at the lower end of the locally monitored distribution.

Zebra mussels have been documented at Becker Lake, which alters the filter-feeding balance and can paradoxically increase water clarity while disrupting the food web. The fishery includes walleye among the lake's 18 documented species — a notable draw for Minnesota anglers. No formal public access is documented at Becker Lake — most use is by shoreline residents and their guests. Ice-out has been recorded 5 times at Becker Lake, with a median around Apr 8. 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 2021-06-07. 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 5.7 ft. Trophic State Index: 52.

MetricValueGrade
Water Clarity (Secchi Depth)5.7 ftD
PhosphorusNo data
Chlorophyll-a (Algae)No data
Trophic State Index (TSI)52Eutrophic

High nutrients, frequent algae, reduced clarity

Lake Details

CharacteristicValue
Maximum Depth20 ft
Average Depth2.2 ft
Surface Area221.38 acres
Shoreline Length5.9 mi
Littoral Zone77%
Public AccessNo

Fish Species

black bullhead,black crappie,bluegill,bowfin (dogfish),channel catfish,common carp,green sunfish,hybrid sunfish,largemouth bass,northern pike,pumpkinseed,redhorse,shorthead redhorse,silver redhorse,walleye,white sucker,yellow bullhead,yellow perch

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

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

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

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

Invasive & Introduced Species

Red chips are ecologically harmful invasive species. Gray chips are stocked or introduced fish that aren't a current ecological concern.

zebra mussel

Water Quality Trend: Declining

Based on 2 years of monitoring data (2020-2025).

MetricTrendChange/YearYears
Water Clarity Declining-0.31 m/yr2

Ice Season

Historical ice data from Minnesota DNR (9 observations).

Typical Ice-Out
Apr 8
Typical Ice-In
Dec 7

Estimated open water season: 243 days

EarliestLatest
Ice-Out2005-04-04 (2005)2007-04-14 (2007)
Ice-In2003-11-08 (2003)2004-12-15 (2004)

Most recent ice-out: 2015-04-11

Location

Loading map…

County Ranking

Ranked #43 of 55 lakes in Stearns County

Cleaner Lakes Within 30 Miles

Becker Lake holds Grade D. 2 nearby lakes hold higher grades.

Nearby Lakes in Stearns County

State Parks Near Becker Lake

DNR Fisheries Survey Summary

7 surveys on file from MN DNR Fisheries. Most recent: 2024-08-01 (Targeted Survey).

Top Species by Catch Rate

SpeciesAvg CPUEAvg Weight
BCS17.00
PGS12.40
Largemouth Bass11.070.71 lb
Northern Pike9.721.7 lb
Bluegill8.210.17 lb
Yellow Perch7.840.09 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.

Largemouth Bass

11 fish · 317 in · 2024-08-01
32046810121416

Northern Pike

23 fish · 1533 in · 2024-08-01
420161820222426283032

Bluegill

7 fish · 46 in · 2024-08-01
320456

Yellow Perch

2 fish · 58 in · 2024-08-01
105678

From the 2024-08-01 survey

Becker Lake is a 176-acre lake located near the city of Richmond in south-central Stearns County. A public access is located on the Sauk River just east of the lake. Becker Lake formed when a dam was built in Cold Spring in the early 1900's and is now considered a part of the Sauk River Chain of Lakes (SRCL). Most of…

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 Becker Lake. 1 report on file.

EPA Impairment Status

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

Causes of impairment

MercuryNutrients (phosphorus, nitrogen)

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

Source: EPA ATTAINS assessment unit MN73-0133-04 · Official waterbody report · Matched by proximity (2.15 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

Ice data from Minnesota DNR Climate

Most recent sample: 2021-06-07

Monitoring stations: 1