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LakeQuality
D

Twin Lake

Crow Wing County, MinnesotaLimited DataEutrophic

Twin Lake pulls a D on the LakeGrade rubric — phosphorus loading and limited clarity hold it below the Minnesota average. 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.

At a TSI of 54, Twin Lake reads as eutrophic — nutrient-rich enough that summer algal growth and reduced clarity are expected, not unusual. Twin Lake reaches 30 ft at its deepest point — typical for Minnesota mid-sized lakes, with seasonal stratification but limited cold-water refuge. At 492 acres, Twin Lake fits the Minnesota median for monitored lakes, with 6.6 miles of shoreline. Twin Lake ranks 117 of 120 in Crow Wing County — at the lower end of the locally monitored distribution.

Twin Lake has no invasive species recorded in Minnesota state databases as of 2024, though prevention practices still apply at all access points. The fishery includes walleye alongside the lake's other 13 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 — 28 observations on file, with a median ice-out around Apr 14. 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 2024-10-23. Grade methodology: LakeGrade methodology.

Swimming Safety

Swimming not recommended, poor water quality with high algae risk

Water Quality Grade: D, Poor

Murky, only visible to about 5 ft. Trophic State Index: 54.

MetricValueGrade
Water Clarity (Secchi Depth)5 ftD
PhosphorusNo data
Chlorophyll-a (Algae)No data
Trophic State Index (TSI)54Eutrophic

High nutrients, frequent algae, reduced clarity

Lake Details

CharacteristicValue
Maximum Depth30 ft
Surface Area491.76 acres
Shoreline Length6.6 mi
Littoral Zone64%
Public AccessYes

Fish Species

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

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

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

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

Water Quality Trend: Declining

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

MetricTrendChange/YearYears
Water Clarity Declining-0.198 m/yr5

Ice Season

Historical ice data from Minnesota DNR (34 observations).

Typical Ice-Out
Apr 14
Typical Ice-In
Nov 21

Estimated open water season: 221 days

EarliestLatest
Ice-Out2012-03-23 (2012)1996-05-01 (1996)
Ice-In2014-11-15 (2014)2007-12-01 (2007)

Most recent ice-out: 2015-04-09

Location

Loading map…

County Ranking

Ranked #117 of 120 lakes in Crow Wing County

Nearby Lakes in Crow Wing County

DNR Fisheries Survey Summary

4 surveys on file from MN DNR Fisheries. Most recent: 2018-08-06 (Standard Survey).

Top Species by Catch Rate

SpeciesAvg CPUEAvg Weight
Bluegill18.620.15 lb
Black Crappie13.380.19 lb
Largemouth Bass5.921.09 lb
Yellow Perch5.170.12 lb
Yellow Bass3.440.78 lb
Northern Pike1.933.22 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

98 fish · 27 in · 2018-08-06
28140234567

Black Crappie

166 fish · 411 in · 2018-08-06
47240trophy 104567891011

Largemouth Bass

4 fish · 1017 in · 2018-08-06
101011121314151617

Yellow Perch

34 fish · 58 in · 2018-08-06
17905678

From the 2018-08-06 survey

Ross Lake is a 487 acre lake located in northeast Crow Wing County. A public access is located off the northeast corner of the lake. Ross has bog stained water, with a secchi disk reading of 4.0'. Much of the lakeshore is undeveloped and provides critical areas for fish spawning as well as providing habitat for fish…

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 Twin 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: 2024-10-23

Monitoring stations: 2