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F

Unnamed Lake

Meeker County, MinnesotaHypereutrophic

Unnamed Lake grades an F: every scored parameter (clarity and phosphorus) rates poorly, placing it among the most stressed lakes monitored in Minnesota. clarity and phosphorus rate similarly, so there is no obvious single lever to pull on watershed management.

Hypereutrophic conditions mean the lake is operating at the upper end of the productivity scale, with all the bloom risk that implies. The lake bottoms out at 15 ft — a moderate depth that supports a warm-water fishery without the year-round cold refuge a deeper basin provides. Unnamed Lake covers 553 acres alongside 9.6 miles of shoreline — a mid-sized water that supports a working fishery without being so large that conditions diverge between basins. Within the 23 graded lakes of Meeker County, Unnamed Lake sits at rank 18, near the bottom of the county list.

Unnamed Lake has no invasive species recorded in Minnesota state databases as of 2023, though prevention practices still apply at all access points. The fishery includes walleye among the lake's 10 documented species — a notable draw for Minnesota anglers. A documented public access point at Unnamed Lake makes the lake usable for shore fishing, paddle craft, and trailered boats. Ice-out has been logged at Unnamed Lake more than two dozen times, putting the median around Apr 5 — a useful baseline for tracking climate trends. 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 2023-09-20. Grade methodology: LakeGrade methodology.

Reviewed by LakeQuality Editorial Team · Updated

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Swimming Safety

Avoid swimming, very poor water quality, potential algae toxins

Water Quality Grade: F, Very Poor

Very murky, less than 0.7 ft of visibility. Phosphorus level: 224 µg/L. Trophic State Index: 83.

MetricValueGrade
Water Clarity (Secchi Depth)0.7 ftF
Phosphorus224 µg/LF
Chlorophyll-a (Algae)No data
Trophic State Index (TSI)83Hypereutrophic

Very high nutrients, dense algae, poor clarity

Lake Details

CharacteristicValue
Maximum Depth15 ft
Surface Area552.86 acres
Shoreline Length9.6 mi
Littoral Zone101%
Public AccessYes

Fish Species

black bullhead,black crappie,bluegill,brown bullhead,common carp,hybrid sunfish,largemouth bass,northern pike,walleye,yellow perch

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)

Water Quality Trend: Stable

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

MetricTrendChange/YearYears
Water Clarity Declining-0.01 m/yr5
Phosphorus Improving-9.95 µg/L/yr5
See year-by-year chart →

Ice Season

Historical ice data from Minnesota DNR (53 observations).

Typical Ice-Out
Apr 5
Typical Ice-In
Nov 23

Estimated open water season: 232 days

EarliestLatest
Ice-Out2000-03-08 (2000)2022-11-20 (2022)
Ice-In2003-11-07 (2003)2024-12-30 (2024)

Most recent ice-out: 2023-04-19

Location

Loading map…

County Ranking

Ranked #18 of 23 lakes in Meeker County

Cleaner Lakes Within 30 Miles

Unnamed Lake holds Grade F. 4 nearby lakes hold higher grades.

See full comparison →

Nearby Lakes in Meeker County

Hypereutrophic Lakes in Minnesota

DNR Fisheries Survey Summary

12 surveys on file from MN DNR Fisheries. Most recent: 2023-07-10 (Targeted Survey).

Top Species by Catch Rate

SpeciesAvg CPUEAvg Weight
Black Bullhead114.870.42 lb
Brown Bullhead35.500.7 lb
Black Crappie24.550.24 lb
Bluegill16.830.16 lb
Largemouth Bass4.822.01 lb
Northern Pike4.602.95 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.

Black Bullhead

68 fish · 413 in · 2023-07-10
1910045678910111213

Brown Bullhead

8 fish · 714 in · 2017-06-12
3207891011121314

Black Crappie

740 fish · 411 in · 2023-07-10
3571790trophy 104567891011

Bluegill

3 fish · 37 in · 2023-07-10
1034567

From the 2023-07-10 survey

Star is a moderate sized lake (552 acres) located southwest of the City of Litchfield in Meeker County. A state-owned access with paved parking and a single cement boat ramp is present on the southeast shore. Star has approximately ten miles of shoreline and a maximum depth of fifteen feet. The Minnesota Department of…

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 Unnamed Lake. 3 reports on file.

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

Nutrients (phosphorus, nitrogen)

A Total Maximum Daily Load (TMDL) plan has been approved.

Source: EPA ATTAINS assessment unit MN47-0129-00 · Official waterbody report · Matched by proximity (1.51 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: 2023-09-20

Monitoring stations: 1