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LakeQuality
C

Silver Lake

Ramsey County, MinnesotaEutrophic

Silver Lake sits at a C on the grading scale — not impaired, not pristine, with summer measurements that vary year to year. 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.

Eutrophic conditions are the baseline here: clarity drops noticeably in late summer, and dissolved oxygen near the bottom can become a concern. Silver Lake reaches 18 ft at its deepest point — typical for Minnesota mid-sized lakes, with seasonal stratification but limited cold-water refuge. At 76 acres, Silver Lake sits below the Minnesota median: a small water where shoreline activity has an outsized effect on water quality. Among the 49 graded lakes in Ramsey County, Silver Lake sits at rank 17, above the county median.

Eurasian watermilfoil has been documented at Silver Lake, requiring shoreline management to keep dense mats from crowding native vegetation. Walleye are documented at Silver Lake, one of 12 fish species on record for the lake. A documented public access point at Silver Lake makes the lake usable for shore fishing, paddle craft, and trailered boats. The lake has a partial ice record — 8 observed ice-outs, centered near Apr 2. 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 2024-09-18. Grade methodology: LakeGrade methodology.

Swimming Safety

Generally safe for swimming, moderate water quality

Water Quality Grade: C, Fair

Moderate clarity, visible to about 7 ft. Phosphorus level: 56 µg/L. Trophic State Index: 56.

MetricValueGrade
Water Clarity (Secchi Depth)7 ftC
Phosphorus56 µg/LC
Chlorophyll-a (Algae)No data
Trophic State Index (TSI)56Eutrophic

High nutrients, frequent algae, reduced clarity

Lake Details

CharacteristicValue
Maximum Depth18 ft
Surface Area76.03 acres
Shoreline Length1.9 mi
Littoral Zone93%
Public AccessYes

Fish Species

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

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

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

Silver Lake fishing regulations (limits, seasons, special rules)

Invasive Species

Eurasian watermilfoil

Water Quality Trend: Improving

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

MetricTrendChange/YearYears
Water Clarity Improving+0.267 m/yr5
Phosphorus Improving-9.95 µg/L/yr5

Ice Season

Historical ice data from Minnesota DNR (11 observations).

Typical Ice-Out
Apr 2
Typical Ice-In
Dec 1

Estimated open water season: 243 days

EarliestLatest
Ice-Out2016-03-14 (2016)2008-04-20 (2008)
Ice-In2007-11-23 (2007)2004-12-05 (2004)

Most recent ice-out: 2022-04-10

Location

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County Ranking

Ranked #17 of 49 lakes in Ramsey County

Nearby Lakes in Ramsey County

DNR Fisheries Survey Summary

10 surveys on file from MN DNR Fisheries. Most recent: 2017-07-24 (Standard Survey).

Top Species by Catch Rate

SpeciesAvg CPUEAvg Weight
Bluegill33.340.07 lb
Black Bullhead17.600.45 lb
Largemouth Bass7.790.96 lb
Hybrid Sunfish7.520.09 lb
Black Crappie6.850.15 lb
Pumpkinseed5.020.09 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.

Bluegill

338 fish · 26 in · 2017-07-24
16583023456

Black Bullhead

8 fish · 1114 in · 2017-07-24
32011121314

Largemouth Bass

4 fish · 814 in · 2017-07-24
10891011121314

Hybrid Sunfish

47 fish · 37 in · 2017-07-24
2010034567

From the 2017-07-24 survey

Silver Lake (72 acres and lake class 40) has maximum depth of 18 feet and littoral area of 71 acres. The lake is a heavily vegetated, shallow water basin that has a predominant Northern Pike - Largemouth Bass - Bluegill species composition. Eurasian watermilfoil was found in the lake in 1992. Since 1995, chemical…

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

Ice data from Minnesota DNR Climate

Most recent sample: 2024-09-18

Monitoring stations: 2