Skip to main content
LakeQuality
D

Tamarack Lake

Carlton County, MinnesotaLimited DataEutrophic

Tamarack 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.

Eutrophic conditions are the baseline here: clarity drops noticeably in late summer, and dissolved oxygen near the bottom can become a concern. Tamarack Lake reaches 48 ft at its deepest point — typical for Minnesota mid-sized lakes, with seasonal stratification but limited cold-water refuge. The lake's 235 acres and 4.7 miles of shoreline put it in the mid-range bucket — large enough for varied use, small enough that watershed inputs reach the whole basin. Tamarack Lake ranks 28 of 33 in Carlton County — at the lower end of the locally monitored distribution.

Tamarack Lake has no invasive species recorded in Minnesota state databases as of 2023, though prevention practices still apply at all access points. Walleye are documented at Tamarack Lake, one of 15 fish species on record for the lake. Public access is available — the lake is on the Minnesota PCA public-access list. The lake has a partial ice record — 13 observed ice-outs, centered near 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 2023-10-01. 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 Depth48 ft
Surface Area234.68 acres
Shoreline Length4.7 mi
Littoral Zone75%
Public AccessYes

Fish Species

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

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

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

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

Water Quality Trend: Stable

Based on 4 years of monitoring data (2020-2025).

MetricTrendChange/YearYears
Water Clarity Stable-0.016 m/yr4

Ice Season

Historical ice data from Minnesota DNR (28 observations).

Typical Ice-Out
Apr 13
Typical Ice-In
Nov 22

Estimated open water season: 223 days

EarliestLatest
Ice-Out2012-03-20 (2012)2013-05-10 (2013)
Ice-In2019-11-06 (2019)2016-12-08 (2016)

Most recent ice-out: 2019-04-20

Location

Loading map…

County Ranking

Ranked #28 of 33 lakes in Carlton County

Nearby Lakes in Carlton County

DNR Fisheries Survey Summary

6 surveys on file from MN DNR Fisheries. Most recent: 2021-06-28 (Standard Survey).

Top Species by Catch Rate

SpeciesAvg CPUEAvg Weight
Bluegill4.680.28 lb
Black Crappie4.540.3 lb
Northern Pike3.081.53 lb
Yellow Bass2.770.97 lb
Pumpkinseed1.660.28 lb
Brown Bullhead1.361.2 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

43 fish · 38 in · 2021-06-28
23120345678

Black Crappie

42 fish · 410 in · 2021-06-28
1160trophy 1045678910

Northern Pike

33 fish · 928 in · 2021-06-28
84010121416182022242628

Yellow Bass

16 fish · 912 in · 2021-06-28
7409101112

From the 2021-06-28 survey

A standard survey was conducted on Tamarack Lake during the summer of 2021 to evaluate and update information about fish populations and to evaluate the Walleye stocking program. Walleye is the primary management species for Tamarack Lake. The current management plan for Tamarack directs Walleye fingerling stocking at…

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 Tamarack Lake. 4 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: 2023-10-01

Monitoring stations: 1