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F

Eden Lake

Stearns County, MinnesotaHypereutrophic

Eden 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.

Hypereutrophic conditions mean the lake is operating at the upper end of the productivity scale, with all the bloom risk that implies. Eden Lake is unusually deep for Minnesota at 77 ft, which buffers the lake against summer warming and helps the deep water stay oxygenated. The lake's 278 acres and 2.5 miles of shoreline put it in the mid-range bucket — large enough for varied use, small enough that watershed inputs reach the whole basin. Within the 55 graded lakes of Stearns County, Eden Lake sits at rank 55, near the bottom of the county list.

Eden 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 16 documented species — a notable draw for Minnesota anglers. A documented public access point at Eden Lake makes the lake usable for shore fishing, paddle craft, and trailered boats. The lake has a long ice-out record — 45 observations on file, with a median ice-out around Apr 7. 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 2023-10-19. 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 3 ft of visibility. Phosphorus level: 179.5 µg/L. Trophic State Index: 70.

MetricValueGrade
Water Clarity (Secchi Depth)3 ftF
Phosphorus179.5 µg/LF
Chlorophyll-a (Algae)No data
Trophic State Index (TSI)70Hypereutrophic

Very high nutrients, dense algae, poor clarity

Lake Details

CharacteristicValue
Maximum Depth77 ft
Average Depth18.6 ft
Surface Area278.23 acres
Shoreline Length2.5 mi
Littoral Zone45%
Public AccessYes

Fish Species

black bullhead,black crappie,bluegill,bowfin (dogfish),brown bullhead,channel catfish,common carp,green sunfish,hybrid sunfish,largemouth bass,northern pike,pumpkinseed,walleye,white sucker,yellow bullhead,yellow perch

Click a species to see all Minnesota and Wisconsin lakes where it is found.

→ Best fishing times for Eden Lake (14-day solunar calendar)

→ Is it safe to eat fish from Eden Lake? (mercury & PFAS guide)

Eden Lake fishing regulations (limits, seasons, special rules)

Ice Season

Historical ice data from Minnesota DNR (94 observations).

Typical Ice-Out
Apr 7
Typical Ice-In
Nov 29

Estimated open water season: 236 days

EarliestLatest
Ice-Out2001-03-09 (2001)2013-05-06 (2013)
Ice-In1991-11-04 (1991)1998-12-21 (1998)

Most recent ice-out: 2022-04-18

Location

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County Ranking

Ranked #55 of 55 lakes in Stearns County

Cleaner Lakes Within 30 Miles

Eden Lake holds Grade F. 5 nearby lakes hold higher grades.

See full comparison →

Nearby Lakes in Stearns County

Hypereutrophic Lakes in Minnesota

DNR Fisheries Survey Summary

11 surveys on file from MN DNR Fisheries. Most recent: 2024-06-10 (Targeted Survey).

Top Species by Catch Rate

SpeciesAvg CPUEAvg Weight
Yellow Perch48.960.14 lb
Black Bullhead31.480.5 lb
Bluegill20.350.24 lb
Largemouth Bass19.471.39 lb
Black Crappie13.480.25 lb
CNM6.05

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.

Yellow Perch

111 fish · 48 in · 2024-06-10
6935045678

Black Bullhead

2 fish · 56 in · 2024-06-10
1056

Bluegill

19 fish · 38 in · 2024-06-10
840345678

Largemouth Bass

3 fish · 1519 in · 2024-06-10
10trophy 201516171819

From the 2024-06-10 survey

Eden Lake is located in south-central Stearns County, north of Eden Valley. It is the second in a series of lakes that outlet north to join the Sauk River Chain of Lakes. A large, mostly agricultural watershed (over 24,000 acres) drains into Eden Lake. The resulting nutrient load has resulted in impaired water…

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 Eden Lake. 3 reports on file.

EPA Impairment Status

Eden Lake is officially listed as impaired under Clean Water Act §303(d) in the 2024 EPA reporting cycle (IR category 5).

Causes of impairment

Impaired biota (cause unknown)MercuryNutrients (phosphorus, nitrogen)

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

Source: EPA ATTAINS assessment unit MN73-0150-00 · 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

Lake details from Minnesota DNR LakeFinder

Ice data from Minnesota DNR Climate

Most recent sample: 2023-10-19

Monitoring stations: 1