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LakeQuality
B

Silver Lake

Beltrami County, MinnesotaMesotrophic

On the LakeGrade scale Silver Lake grades a B, with clarity at 12.7 ft and phosphorus readings still being added placing it above the Minnesota median. Clarity, phosphorus, and chlorophyll-a all rate similarly, so there is no obvious single lever to pull on watershed management.

Mesotrophic conditions dominate at Silver Lake: enough nutrients for a healthy fishery, not so much that algal blooms become a chronic problem. The lake's 55 ft maximum depth is in the upper tier for Minnesota — deep enough for cold-water fish to find refuge in summer. The lake's 132 acres and 2.0 miles of shoreline put it in the mid-range bucket — large enough for varied use, small enough that watershed inputs reach the whole basin. Silver Lake sits at rank 52 of 86 in Beltrami County, in the lower half of the local distribution.

No invasive species are currently listed at Silver Lake — the lake remains off the Minnesota infested-waters roster. The state fisheries records do not list documented species for Silver Lake, which usually reflects a lack of formal fisheries survey work rather than an empty lake. Public access is available — the lake is on the Minnesota PCA public-access list. 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 2024-10-07. Grade methodology: LakeGrade methodology.

Swimming Safety

Good for swimming, clear water with low algae levels

Water Quality Grade: B, Good

Good clarity, visible to about 12.7 ft. Chlorophyll-a: 6.1 µg/L. Trophic State Index: 44.

MetricValueGrade
Water Clarity (Secchi Depth)12.7 ftB
PhosphorusNo data
Chlorophyll-a (Algae)6.1 µg/LB
Trophic State Index (TSI)44Mesotrophic

Moderate nutrients, good water quality

Lake Details

CharacteristicValue
Maximum Depth55 ft
Surface Area131.75 acres
Shoreline Length2 mi
Littoral Zone43%
Public AccessYes

Water Quality Trend: Stable

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

MetricTrendChange/YearYears
Water Clarity Improving+0.265 m/yr2
Chlorophyll-a Declining+0.83 µg/L/yr2

Location

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County Ranking

Ranked #52 of 86 lakes in Beltrami County

Nearby Lakes in Beltrami County

DNR Fisheries Survey Summary

2 surveys on file from MN DNR Fisheries. Most recent: 1991-08-14 (Standard Survey).

Top Species by Catch Rate

SpeciesAvg CPUEAvg Weight
Bluegill45.630.07 lb
Pumpkinseed22.240.14 lb
Yellow Perch20.750.37 lb
Northern Pike8.621.63 lb
Black Crappie5.420.32 lb
Largemouth Bass1.430.66 lb

CPUE = catch per unit effort, averaged across surveys (excludes juvenile shoreline seining). Higher CPUE = more abundant in standardized sampling.

From the 1991-08-14 survey

HUGE POPULATION OF STUNTED BLGS. THE BLGS WERE NOT PRESENT DURING THE 1977 SURVEY. THE BLG ARE WELL ABOVE THE 3RD QUARTILE IN NUMBERS THOUGH THEY ARE SMALL - @ 15/LB. PMK ARE WELL ABOVE THE MEDIANS THOUGH GENERALLY LARGER THAN THE BLGS. NOP ARE ALSO WELL ABOVE THE 3RD QUARTILE IN NUMBERS AND WEIGHT. BLC AND LMB…

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 Silver 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: 2024-10-07

Monitoring stations: 1