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LakeQuality
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. Clarity, phosphorus, and chlorophyll-a all rate similarly, so there is no obvious single lever to pull on watershed management.

At a TSI of 52, Becker Lake reads as eutrophic — nutrient-rich enough that summer algal growth and reduced clarity are expected, not unusual. A maximum depth of 20 ft puts Becker Lake in the middle of Minnesota's depth distribution. Becker Lake covers 221 acres alongside 5.9 miles of shoreline — a mid-sized water that supports a working fishery without being so large that conditions diverge between basins. Within the 55 graded lakes of Stearns County, Becker Lake sits at rank 44, near the bottom of the county list.

Becker 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. The fishery includes walleye alongside the lake's other 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.

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

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 Species

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

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County Ranking

Ranked #44 of 55 lakes in Stearns County

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.

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: 2021-06-07

Monitoring stations: 1