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.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 5 ft | D |
| Phosphorus | No data | |
| Chlorophyll-a (Algae) | No data | |
| Trophic State Index (TSI) | 54 | Eutrophic |
High nutrients, frequent algae, reduced clarity
Lake Details
| Characteristic | Value |
|---|---|
| Maximum Depth | 48 ft |
| Surface Area | 234.68 acres |
| Shoreline Length | 4.7 mi |
| Littoral Zone | 75% |
| Public Access | Yes |
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).
| Metric | Trend | Change/Year | Years |
|---|---|---|---|
| Water Clarity | → Stable | -0.016 m/yr | 4 |
Ice Season
Historical ice data from Minnesota DNR (28 observations).
Estimated open water season: 223 days
| Earliest | Latest | |
|---|---|---|
| Ice-Out | 2012-03-20 (2012) | 2013-05-10 (2013) |
| Ice-In | 2019-11-06 (2019) | 2016-12-08 (2016) |
Most recent ice-out: 2019-04-20
Location
County Ranking
Ranked #28 of 33 lakes in Carlton County
Nearby Lakes in Carlton County
More Minnesota Lake Rankings
State Parks Near Tamarack Lake
Other Grade D Lakes in Minnesota
Eutrophic Lakes in Minnesota
DNR Fisheries Survey Summary
6 surveys on file from MN DNR Fisheries. Most recent: 2021-06-28 (Standard Survey).
Top Species by Catch Rate
| Species | Avg CPUE | Avg Weight |
|---|---|---|
| Bluegill | 4.68 | 0.28 lb |
| Black Crappie | 4.54 | 0.3 lb |
| Northern Pike | 3.08 | 1.53 lb |
| Yellow Bass | 2.77 | 0.97 lb |
| Pumpkinseed | 1.66 | 0.28 lb |
| Brown Bullhead | 1.36 | 1.2 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
Black Crappie
Northern Pike
Yellow Bass
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…
DNR Reports & Resources
Minnesota DNR LakeFinder publishes lake survey, fish stocking, water access, and aquatic plant data for Tamarack Lake. 4 reports on file.
- —Fisheries Lake Survey — TamarackFisheries Lake Survey · MN DNR LakeFinder
- —Aquatic Plant Report — Tamarack (0240)Aquatic Plant Report · MN DNR LakeFinder
- —Fish Stocking History — TamarackFish Stocking History · MN DNR LakeFinder
- —Public Water Access Sites — TamarackPublic Water Access Sites · MN DNR LakeFinder
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