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West Silent Lake

Otter Tail County, MinnesotaOligotrophic

West Silent Lake earns an A — water clarity, phosphorus, and chlorophyll-a all rate among the best monitored waters in Otter Tail 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 value of 35 puts West Silent Lake in the oligotrophic range, where biological productivity stays low and the water column remains clear. At 58 ft of maximum depth, West Silent Lake stratifies reliably through the summer — the hypolimnion stays cooler and clearer than the surface layer suggests. The lake's 347 acres and 4.9 miles of shoreline put it in the mid-range bucket — large enough for varied use, small enough that watershed inputs reach the whole basin. Within Otter Tail County's 97 graded waters, West Silent Lake sits at rank 16, near the top of the local distribution.

Zebra mussel presence at West Silent Lake means the lake's clarity numbers carry an asterisk — filtered water is not the same as nutrient-poor water. The fishery is bass-led, with 9 documented species across the lake's records. A documented public access point at West Silent Lake makes the lake usable for shore fishing, paddle craft, and trailered boats. 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 2024-09-16. Grade methodology: LakeGrade methodology.

Swimming Safety

Excellent for swimming, crystal clear water with minimal algae

Water Quality Grade: A, Excellent

Crystal clear, you can see 18 ft down. Phosphorus level: 8 µg/L. Trophic State Index: 35.

MetricValueGrade
Water Clarity (Secchi Depth)18 ftA
Phosphorus8 µg/LA
Chlorophyll-a (Algae)No data
Trophic State Index (TSI)35Oligotrophic

Low nutrients, clear water, excellent for swimming

Lake Details

CharacteristicValue
Maximum Depth58 ft
Surface Area346.55 acres
Shoreline Length4.9 mi
Littoral Zone34%
Public AccessYes

Fish Species

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

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

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

West Silent Lake fishing regulations (limits, seasons, special rules)

Invasive Species

zebra mussel

Water Quality Trend: Declining

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

MetricTrendChange/YearYears
Water Clarity Stable-0.091 m/yr5
Phosphorus Declining+1.95 µg/L/yr5

Location

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County Ranking

Ranked #16 of 97 lakes in Otter Tail County

Nearby Lakes in Otter Tail County

DNR Fisheries Survey Summary

12 surveys on file from MN DNR Fisheries. Most recent: 2025-05-30 (Targeted Survey).

Top Species by Catch Rate

SpeciesAvg CPUEAvg Weight
Bluegill44.980.23 lb
Bluntnose Minnow40.34
Largemouth Bass29.330.64 lb
BNS14.29
JND12.50
Spottail Shiner9.71

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.

Bluegill

260 fish · 410 in · 2025-04-29
97490trophy 1045678910

Largemouth Bass

89 fish · 818 in · 2019-05-31
2111089101112131415161718

From the 2025-05-30 survey

West Silent Lake is a 328-acre mesotrophic (moderately fertile) lake located in north-central Otter Tail County approximately eight miles east of Pelican Rapids, MN. The immediate watershed is composed primarily of agricultural land interspersed with hardwood woodlots. The maximum depth is 58 feet; however, 36% of the…

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 West Silent Lake. 3 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: 2024-09-16

Monitoring stations: 2