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.
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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.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 5.7 ft | D |
| Phosphorus | No data | |
| Chlorophyll-a (Algae) | No data | |
| Trophic State Index (TSI) | 52 | Eutrophic |
High nutrients, frequent algae, reduced clarity
Lake Details
| Characteristic | Value |
|---|---|
| Maximum Depth | 20 ft |
| Average Depth | 2.2 ft |
| Surface Area | 221.38 acres |
| Shoreline Length | 5.9 mi |
| Littoral Zone | 77% |
| Public Access | No |
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 & Introduced Species
Red chips are ecologically harmful invasive species. Gray chips are stocked or introduced fish that aren't a current ecological concern.
Water Quality Trend: ↓ Declining
Based on 2 years of monitoring data (2020-2025).
| Metric | Trend | Change/Year | Years |
|---|---|---|---|
| Water Clarity | ↓ Declining | -0.31 m/yr | 2 |
Ice Season
Historical ice data from Minnesota DNR (9 observations).
Estimated open water season: 243 days
| Earliest | Latest | |
|---|---|---|
| Ice-Out | 2005-04-04 (2005) | 2007-04-14 (2007) |
| Ice-In | 2003-11-08 (2003) | 2004-12-15 (2004) |
Most recent ice-out: 2015-04-11
Location
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
More Minnesota Lake Rankings
State Parks Near Becker Lake
Other Grade D Lakes in Minnesota
Eutrophic Lakes in Minnesota
DNR Fisheries Survey Summary
7 surveys on file from MN DNR Fisheries. Most recent: 2024-08-01 (Targeted Survey).
Top Species by Catch Rate
| Species | Avg CPUE | Avg Weight |
|---|---|---|
| BCS | 17.00 | — |
| PGS | 12.40 | — |
| Largemouth Bass | 11.07 | 0.71 lb |
| Northern Pike | 9.72 | 1.7 lb |
| Bluegill | 8.21 | 0.17 lb |
| Yellow Perch | 7.84 | 0.09 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
Northern Pike
Bluegill
Yellow Perch
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…
DNR Reports & Resources
Minnesota DNR LakeFinder publishes lake survey, fish stocking, water access, and aquatic plant data for Becker Lake. 1 report on file.
- —Fisheries Lake Survey — BeckerFisheries Lake Survey · MN DNR LakeFinder
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
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