Silver Lake
Crow Wing County, MinnesotaLimited DataOligotrophic
Silver Lake earns an A — every scored parameter (clarity) rates among the best monitored waters in Crow Wing County.
A TSI value of 36 puts Silver Lake in the oligotrophic range, where biological productivity stays low and the water column remains clear. A maximum depth of 23 ft puts Silver Lake in the middle of Minnesota's depth distribution. Silver Lake covers 208 acres alongside 2.1 miles of shoreline — a mid-sized water that supports a working fishery without being so large that conditions diverge between basins. Silver Lake ranks 17 of 120 in Crow Wing County, putting it in the upper tier of locally monitored lakes.
Silver Lake has no invasive species recorded in Minnesota state databases as of 2022, though prevention practices still apply at all access points. The fishery is bass-led, with 6 documented species across the lake's records. Public access is available — the lake is on the Minnesota PCA public-access list. The lake has a long ice-out record — 25 observations on file, with a median ice-out around Apr 13. Monitoring depth is thin here: the LakeGrade rubric is applied to a small number of sample years, and the grade will be revised as more data accumulates.
Source: EPA Water Quality Portal sampling records, Minnesota DNR LakeFinder, last sampled 2022-09-11. Grade methodology: LakeGrade methodology.
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Swimming Safety
Excellent for swimming, crystal clear water with minimal algae
Water Quality Grade: A, Excellent
Crystal clear, you can see 17 ft down. Trophic State Index: 36.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 17 ft | A |
| Phosphorus | No data | |
| Chlorophyll-a (Algae) | No data | |
| Trophic State Index (TSI) | 36 | Oligotrophic |
Low nutrients, clear water, excellent for swimming
Lake Details
| Characteristic | Value |
|---|---|
| Maximum Depth | 23 ft |
| Surface Area | 208.41 acres |
| Shoreline Length | 2.1 mi |
| Littoral Zone | 93% |
| Public Access | Yes |
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)
Water Quality Trend: ↓ Declining
Based on 5 years of monitoring data (2020-2025).
| Metric | Trend | Change/Year | Years |
|---|---|---|---|
| Water Clarity | ↓ Declining | -0.328 m/yr | 5 |
Ice Season
Historical ice data from Minnesota DNR (39 observations).
Estimated open water season: 226 days
| Earliest | Latest | |
|---|---|---|
| Ice-Out | 2000-03-24 (2000) | 2022-04-28 (2022) |
| Ice-In | 1988-10-29 (1988) | 1990-12-25 (1990) |
Most recent ice-out: 2022-04-28
Location
County Ranking
Ranked #17 of 120 lakes in Crow Wing County
Nearby Lakes in Crow Wing County
More Minnesota Lake Rankings
State Parks Near Silver Lake
Other Grade A Lakes in Minnesota
Oligotrophic Lakes in Minnesota
DNR Fisheries Survey Summary
5 surveys on file from MN DNR Fisheries. Most recent: 2015-08-17 (Targeted Survey).
Top Species by Catch Rate
| Species | Avg CPUE | Avg Weight |
|---|---|---|
| Bluegill | 57.32 | 0.15 lb |
| SUN | 37.21 | — |
| Brown Bullhead | 20.57 | 0.37 lb |
| Yellow Bass | 10.09 | 0.29 lb |
| Northern Pike | 10.07 | 1.91 lb |
| Pumpkinseed | 8.97 | 0.1 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
Brown Bullhead
Yellow Bass
Northern Pike
From the 2015-08-17 survey
Silver Lake is a 214 acre lake located four miles northeast of Merrifield in Crow Wing County. Silver has a maximum depth of 23'. A nearshore survey was conducted to assess the populations of both game and non-game fish species. Ten 100' long sampling stations were evenly spaced around the lakeshore. Each station was…
DNR Reports & Resources
Minnesota DNR LakeFinder publishes lake survey, fish stocking, water access, and aquatic plant data for Silver Lake. 2 reports on file.
- —Fisheries Lake Survey — SilverFisheries Lake Survey · MN DNR LakeFinder
- —Public Water Access Sites — SilverPublic Water Access Sites · MN DNR LakeFinder
EPA Impairment Status
Silver 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 MN18-0305-00 · Official waterbody report · Matched by proximity (2.57 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: 2022-09-11
Monitoring stations: 1