Unnamed Lake
Itasca County, MinnesotaLimited DataMesotrophic
Unnamed Lake carries a solid B grade — strong on most parameters, with measurements that hold up well across the summer season.
The lake sits in the mesotrophic zone — the band where most well-managed Minnesota lakes fall. The lake's 53 ft maximum depth is in the upper tier for Minnesota — deep enough for cold-water fish to find refuge in summer. Unnamed Lake is small — 39 acres alongside 1.1 miles of shoreline — which makes it sensitive to even modest changes in watershed runoff or recreational pressure. Among the 141 graded lakes in Itasca County, Unnamed Lake sits at rank 59, above the county median.
Unnamed Lake carries an invasive watermilfoil record — boat-launch decontamination and shoreline care matter more here than at uninfested lakes. Bass fishing is part of the appeal: the species list runs to 9, anchored by largemouth and/or smallmouth bass. Public access is available — the lake is on the Minnesota PCA public-access list. Ice-out has been recorded 18 times at Unnamed Lake, with a median around Apr 18. 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 2024-07-28. Grade methodology: LakeGrade methodology.
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Swimming Safety
Good for swimming, clear water with low algae levels
Water Quality Grade: B, Good
Good clarity, visible to about 13 ft. Trophic State Index: 40.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 13 ft | B |
| Phosphorus | No data | |
| Chlorophyll-a (Algae) | No data | |
| Trophic State Index (TSI) | 40 | Mesotrophic |
Moderate nutrients, good water quality
Lake Details
| Characteristic | Value |
|---|---|
| Maximum Depth | 53 ft |
| Average Depth | 23 ft |
| Surface Area | 38.97 acres |
| Shoreline Length | 1.1 mi |
| Littoral Zone | 33% |
| Public Access | Yes |
Fish Species
Click a species to see all Minnesota and Wisconsin lakes where it is found.
→ Best fishing times for Unnamed Lake (14-day solunar calendar)
→ Is it safe to eat fish from Unnamed Lake? (mercury & PFAS guide)
→ Unnamed Lake fishing regulations (limits, seasons, special rules)
Invasive & Introduced Species
Red chips are ecologically harmful invasive species. Gray chips are stocked or introduced fish that aren't a current ecological concern.
Water Quality Trend: ↑ Improving
Based on 4 years of monitoring data (2020-2025).
| Metric | Trend | Change/Year | Years |
|---|---|---|---|
| Water Clarity | ↑ Improving | +0.106 m/yr | 4 |
Ice Season
Historical ice data from Minnesota DNR (31 observations).
Estimated open water season: 220 days
| Earliest | Latest | |
|---|---|---|
| Ice-Out | 2000-03-30 (2000) | 1996-05-05 (1996) |
| Ice-In | 1995-11-12 (1995) | 1998-12-08 (1998) |
Most recent ice-out: 2025-04-18
Location
County Ranking
Ranked #59 of 141 lakes in Itasca County
Cleaner Lakes Within 30 Miles
Unnamed Lake holds Grade B. 2 nearby lakes hold higher grades.
Nearby Lakes in Itasca County
More Minnesota Lake Rankings
State Parks Near Unnamed Lake
Other Grade B Lakes in Minnesota
Mesotrophic Lakes in Minnesota
DNR Fisheries Survey Summary
5 surveys on file from MN DNR Fisheries. Most recent: 2014-07-28 (Standard Survey).
Top Species by Catch Rate
| Species | Avg CPUE | Avg Weight |
|---|---|---|
| Bluegill | 8.35 | 0.13 lb |
| Northern Pike | 3.27 | 1.63 lb |
| Black Crappie | 1.89 | 0.2 lb |
| Brown Bullhead | 1.88 | 0.93 lb |
| Black Bullhead | 1.75 | 0.44 lb |
| Yellow Bass | 1.43 | 0.66 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
Northern Pike
Black Crappie
Brown Bullhead
From the 2014-07-28 survey
Ice Lake is a small, mesotrophic lake located in Grand Rapids, Minnesota. Ice Lake has a surface area of 42 acres, a littoral area of 13 acres, and a maximum depth of 53 feet. The lake is clear and the Secchi depth was 10 feet during the 2014 assessment. Ice Lake has an inlet from McKinney Lake and outlets to Hale…
DNR Reports & Resources
Minnesota DNR LakeFinder publishes lake survey, fish stocking, water access, and aquatic plant data for Unnamed Lake. 3 reports on file.
- —Fisheries Lake Survey — IceFisheries Lake Survey · MN DNR LakeFinder
- —Aquatic Plant Report — Ice (0605)Aquatic Plant Report · MN DNR LakeFinder
- —Public Water Access Sites — IcePublic Water Access Sites · MN DNR LakeFinder
EPA Impairment Status
Unnamed 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 MN31-0533-00 · Official waterbody report · Matched by proximity (2.59 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: 2024-07-28
Monitoring stations: 1