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F

Edina Lake

Hennepin County, MinnesotaHypereutrophic

Edina Lake grades an F: every scored parameter (clarity and phosphorus) rates poorly, placing it among the most stressed lakes monitored in Minnesota. The two scored sub-grades — clarity and phosphorus — track close together, so neither one is dragging the average down.

A TSI above 70 puts Edina Lake in hypereutrophic territory: visible blooms are common, and clarity rarely climbs even in early summer. 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 95 graded lakes of Hennepin County, Edina Lake sits at rank 84, near the bottom of the county list.

Edina Lake carries an invasive watermilfoil record — boat-launch decontamination and shoreline care matter more here than at uninfested lakes. The state fisheries records do not list documented species for Edina Lake, which usually reflects a lack of formal fisheries survey work rather than an empty lake. No formal public access is documented at Edina Lake — most use is by shoreline residents and their guests. 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 2020-09-09. 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 0.8 ft of visibility. Phosphorus level: 130 µg/L. Trophic State Index: 77.

MetricValueGrade
Water Clarity (Secchi Depth)0.8 ftF
Phosphorus130 µg/LF
Chlorophyll-a (Algae)No data
Trophic State Index (TSI)77Hypereutrophic

Very high nutrients, dense algae, poor clarity

Invasive & Introduced Species

Red chips are ecologically harmful invasive species. Gray chips are stocked or introduced fish that aren't a current ecological concern.

Eurasian watermilfoil

Location

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County Ranking

Ranked #84 of 95 lakes in Hennepin County

Cleaner Lakes Within 30 Miles

Edina Lake holds Grade F. 2 nearby lakes hold higher grades.

See full comparison →

Nearby Lakes in Hennepin County

Hypereutrophic Lakes in Minnesota

EPA Impairment Status

Edina 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 MN27-0029-00 · Official waterbody report

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

Most recent sample: 2020-09-09

Monitoring stations: 1