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B

Sallie Lake

Becker County, MinnesotaMesotrophic

On the LakeGrade scale Sallie Lake grades a B, with clarity at 12.2 ft and 21 µg/L of phosphorus placing it above the Minnesota median. The two scored sub-grades — clarity and phosphorus — track close together, so neither one is dragging the average down.

Mesotrophic conditions dominate at Sallie Lake: enough nutrients for a healthy fishery, not so much that algal blooms become a chronic problem. At 50 ft of maximum depth, Sallie Lake stratifies reliably through the summer — the hypolimnion stays cooler and clearer than the surface layer suggests. Sallie Lake covers 1,280 acres alongside 5.8 miles of shoreline, large enough that conditions can vary meaningfully between bays. Among the 93 graded lakes in Becker County, Sallie Lake sits at rank 38, above the county median.

Sallie 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 among the lake's 16 documented species — a notable draw for Minnesota anglers. Public access is available — the lake is on the Minnesota PCA public-access list. The lake has a long ice-out record — 60 observations on file, with a median ice-out around Apr 18. 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 2024-09-29. Grade methodology: LakeGrade methodology.

Reviewed by LakeQuality Editorial Team · Updated

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Swimming Safety

Good for swimming, clear water with low algae levels

Water Quality Grade: B, Good

Good clarity, visible to about 12.2 ft. Phosphorus level: 21 µg/L. Trophic State Index: 45.

MetricValueGrade
Water Clarity (Secchi Depth)12.2 ftB
Phosphorus21 µg/LB
Chlorophyll-a (Algae)No data
Trophic State Index (TSI)45Mesotrophic

Moderate nutrients, good water quality

Lake Details

CharacteristicValue
Maximum Depth50 ft
Average Depth17 ft
Surface Area1.3K acres
Shoreline Length5.8 mi
Littoral Zone45%
Public AccessYes

Fish Species

black bullhead,black crappie,bluegill,bowfin (dogfish),brown bullhead,green sunfish,hybrid sunfish,largemouth bass,northern pike,pumpkinseed,rock bass,tullibee (cisco),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 Sallie Lake (14-day solunar calendar)

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

Sallie 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.

flowering rushzebra mussel

Water Quality Trend: Improving

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

MetricTrendChange/YearYears
Water Clarity Improving+0.107 m/yr5
Phosphorus Improving-0.65 µg/L/yr5
See year-by-year chart →

Ice Season

Historical ice data from Minnesota DNR (60 observations).

Typical Ice-Out
Apr 18
EarliestLatest
Ice-Out2010-04-02 (2010)2013-05-11 (2013)

Most recent ice-out: 2022-05-08

Location

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County Ranking

Ranked #38 of 93 lakes in Becker County

Cleaner Lakes Within 30 Miles

Sallie Lake holds Grade B. 3 nearby lakes hold higher grades.

See full comparison →

Nearby Lakes in Becker County

State Parks Near Sallie Lake

DNR Fisheries Survey Summary

14 surveys on file from MN DNR Fisheries. Most recent: 2024-07-25 (Targeted Survey).

Top Species by Catch Rate

SpeciesAvg CPUEAvg Weight
Black Bullhead39.040.78 lb
Spottail Shiner25.63
Yellow Perch23.830.13 lb
Bluegill19.640.21 lb
Bluntnose Minnow11.89
BKF10.01

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

34 fish · 815 in · 2019-07-15
137089101112131415

Yellow Perch

513 fish · 58 in · 2024-07-14
32616305678

Bluegill

1,422 fish · 38 in · 2024-07-14
7193600345678

From the 2024-07-25 survey

A targeted survey of nearshore fish species in Lake Sallie was conducted July 26th, 29th, and 30th, 2024, by Detroit Lakes Fisheries Staff. Data was collected from 18 sampling stations evenly spaced around the lake. All stations were sampled with a backpack electrofishing unit, 13 were sampled with a 50-foot seine and…

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 Sallie Lake. 4 reports on file.

EPA Impairment Status

Sallie 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 MN03-0359-00 · Official waterbody report

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: 2024-09-29

Monitoring stations: 1