Skip to main content
LakeQuality
D

Unnamed Lake

Becker County, MinnesotaLimited DataEutrophic

On the scoring rubric Unnamed Lake grades a D: clarity at 3.5 ft and phosphorus readings still being added keep it in the lower bracket for Becker County. 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.

A TSI in the eutrophic range signals a lake doing what nutrient-loaded waters do — supporting an active algal community at the cost of clear water. The lake's maximum depth is not yet documented in state morphometric records — context for its physical structure remains limited. The lake's surface area is not consistently recorded across state datasets — physical context remains partial. Within the 93 graded lakes of Becker County, Unnamed Lake sits at rank 85, near the bottom of the county list.

No invasive species are currently listed at Unnamed Lake — the lake remains off the Minnesota infested-waters roster. The state fisheries records do not list documented species for Unnamed Lake, which usually reflects a lack of formal fisheries survey work rather than an empty lake. No formal public access is documented at Unnamed Lake — most use is by shoreline residents and their guests. 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 2021-05-31. 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 3.5 ft. Trophic State Index: 59.

MetricValueGrade
Water Clarity (Secchi Depth)3.5 ftD
PhosphorusNo data
Chlorophyll-a (Algae)No data
Trophic State Index (TSI)59Eutrophic

High nutrients, frequent algae, reduced clarity

Water Quality Trend: Stable

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

MetricTrendChange/YearYears
Water Clarity Stable+0.016 m/yr5

Ice Season

Historical ice data from Minnesota DNR (9 observations).

Typical Ice-Out
Apr 30
Typical Ice-In
Nov 22

Estimated open water season: 206 days

EarliestLatest
Ice-Out2019-04-23 (2019)2022-05-05 (2022)
Ice-In2018-11-10 (2018)2006-11-29 (2006)

Most recent ice-out: 2023-05-04

Location

Loading map…

County Ranking

Ranked #85 of 93 lakes in Becker County

Nearby Lakes in Becker County

Data Sources

Water quality data from the EPA Water Quality Portal

Grading methodology based on Metropolitan Council standards

Ice data from Minnesota DNR Climate

Most recent sample: 2021-05-31

Monitoring stations: 1