Eddy Lake
Carlton County, Minnesota24 acresView mapDirections
Minnesota PCA publishes the water-quality measurements for Eddy Lake. Here is what has been measured.
- Impaired · Mercury
- 37 ft max depth
- Limited data
Eddy Lake in Carlton County, Minnesota has water-quality measurements published by Minnesota PCA, shown here as reported. Water clarity: 3.5 ft visibility. Maximum depth: 37 ft. Surface area: 23.97 acres.
Minnesota DNR's Standard Survey on August 3, 1998 caught 1.00 northern pike per gill net at Eddy Lake. DNR survey details →
Eddy Lake is a 24-acre lake in Carlton County, Minnesota with a maximum depth of 37 feet. Overall water quality is improving over recent sampling years. The lake supports 13 documented fish species including black crappie, bluegill, and green sunfish. No public access — the lake is private or restricted.
Source: EPA Water Quality Portal sampling records, Minnesota DNR LakeFinder, last sampled 2021-11-07. Methodology: how these readings are compared.
What Eddy Lake is good for
From access and monitoring records, not editorial picks.
- Fishing13 species recorded
- Ice seasonIce-out around Apr 4
- Deep water37 ft surveyed max depth
Swimming conditions
No readingLimited data
Nutrient and algae readings are not a swimming clearance. Eddy Lake is listed impaired under Clean Water Act §303(d) (IR 5) for mercury. Check local advisories before you swim.
Whether Eddy Lake is safe to swim in today is a call for the Minnesota Pollution Control Agency and the Minnesota DNR and the county health department, who post current advisories. LakeQuality does not issue swimming clearances.
Water quality measurements for Eddy Lake
These are the measurements Minnesota PCA publishes for Eddy Lake, shown as reported. The condition class beside each reading is the EPA National Lakes Assessment class for this lake’s ecoregion.
Murky, only visible to about 3.5 ft. TSI 59.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | 3.5ft | Measured, not scored How deep a black-and-white disk stays visible from the surface. Higher is clearer. |
| Total phosphorus | No reading The nutrient that most limits algae growth in freshwater. More phosphorus, more algae potential. | |
| Chlorophyll-a (algae) | No reading The green pigment in algae — a direct measure of how much algae is in the water. | |
| Trophic state (TSI)Carlson's 0–100 index of how much algae a lake can support, from clarity, phosphorus and chlorophyll-a. | 59 | Eutrophic OligotrophicMesotrophicEutrophicHypereutrophic |
High nutrients, frequent algae, reduced clarity
Ask about Eddy Lake
Answers come straight from the public measurements and survey records on this page.
Minnesota DNR's Standard Survey on August 3, 1998 caught 1.00 northern pike per gill net at Eddy Lake.
A DNR fisheries survey reports fish abundance and catch rates, not water quality. LakeQuality shows Eddy Lake’s water-quality measurements separately, and the water-quality trend over 4 years of monitoring is improving. Catch rate is not a swim clearance and is not a weekly bite report.
DNR Fisheries Survey Summary
2 surveys on file from MN DNR Fisheries. Most recent: 1998-08-03 (Standard Survey).
2 surveys on file · most recent 1998-08-03 (Standard Survey)
28 years old| Species | Catch rate (CPUE) | Size | Avg weight |
|---|---|---|---|
| Largemouth Bass | 32.00 | 1–2 in 1998-08-03 | |
| Bluegill | 9.19 | 1–9 in 1998-08-03 | 0.2 lb |
| Black Crappie | 5.76 | 1–11 in 1998-08-03 | 0.48 lb |
| Yellow Perch | 3.56 | 1–8 in 1998-08-03 | 0.17 lb |
| Pumpkinseed | 3.21 | 3–7 in 1998-08-03 | 0.22 lb |
| White Sucker | 2.99 | 14–18 in 1998-08-03 | 2.84 lb |
CPUE = catch per unit effort, fish caught per net per set in a standardised survey. It measures abundance, not size, and is not a weekly bite report.
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.
Largemouth Bass
Bluegill
Black Crappie
Yellow Perch
From the 1998-08-03 survey
Eddy lake is 23 acres and is located 3 miles north of Moose Lake, MN along Interstate Highway 35. Access is via the Moose Horn River from Hanging Horn Lake, however this access can be difficult during low water periods. The maximum depth is 37 feet with 83 percent of the lake being less than 15 feet deep. Population…
DNR Reports & Resources
Minnesota DNR LakeFinder publishes lake survey, fish stocking, water access, and aquatic plant data for Eddy Lake. 1 report on file.
These links open on the official state DNR websites (Wisconsin DNR survey PDFs · Minnesota DNR LakeFinder).
- —Fisheries Lake Survey — EddyFisheries Lake Survey · MN DNR LakeFinder
Lake Details
Max depth
37 ft
Surface area
24 acres
Shoreline
0.9 mi
Littoral zone
79%
Share shallower than 15 ft
Public access
No
Listed by Minnesota PCA
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Stays near Eddy Lake
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Fish Species
Click a species to see every lake where it is documented.
Fishing Eddy Lake
Water Quality Trend: Improving
Based on 4 years of monitoring (2020–2025).
Water clarity
Improving4 years
Ice season
Typical ice-out
Apr 4
Earliest Mar 18, 1995 · Latest Apr 25, 1994
Typical ice-in
Dec 8
Earliest Nov 20, 1997 · Latest Jan 2, 2006
Most recent ice-out
Apr 4
2015
31 observations · Minnesota PCA ice records
EPA Impairment Status
Eddy Lake is officially listed as impaired under Clean Water Act §303(d) in the 2024 EPA reporting cycle (IR category 5).
Causes of impairment
Designated uses not supporting: Fish consumption.
A Total Maximum Daily Load (TMDL) plan has been approved.
Source: EPA ATTAINS assessment unit MN09-0039-00 · Official waterbody report
Nearby Lakes in Carlton County
Frequently asked questions about Eddy Lake
Where is Eddy Lake?
- Eddy Lake is a lake in Carlton County, Minnesota. Its water-quality measurements are published by Minnesota PCA and shown on this page as reported.
What is the water quality of Eddy Lake?
- Eddy Lake in Carlton County, Minnesota has water-quality measurements published by Minnesota PCA, shown here as reported. Water clarity: 3.5 ft visibility. Maximum depth: 37 ft. Surface area: 23.97 acres.
Is Eddy Lake safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Eddy Lake is listed impaired under Clean Water Act §303(d) (IR 5) for mercury. Check local advisories before you swim.
How deep is Eddy Lake?
- Eddy Lake has a maximum depth of 37 feet. The lake covers 23.97 acres.
What fish are in Eddy Lake?
- Fish species found in Eddy Lake include black crappie, bluegill, green sunfish, largemouth bass, northern pike, pumpkinseed, rock bass, shorthead redhorse, silver redhorse, walleye, white sucker, yellow bullhead, yellow perch. Eddy Lake is located in Carlton County, Minnesota.
What did the DNR fisheries survey find at Eddy Lake?
- Minnesota DNR's Standard Survey on August 3, 1998 caught 1.00 northern pike per gill net at Eddy Lake. A DNR fisheries survey reports fish abundance and catch rates, not water quality. LakeQuality shows Eddy Lake’s water-quality measurements separately, and the water-quality trend over 4 years of monitoring is improving. Catch rate is not a swim clearance and is not a weekly bite report.
When does Eddy Lake thaw?
- Eddy Lake typically has ice-out around Apr 4. Ice typically forms around Dec 8. The open water season is approximately 248 days.
Can I fish at Eddy Lake?
- Public access to Eddy Lake is listed as no on the lake record, so confirm before you make the trip. Seasons, size and bag limits, and whether you need a license are set by Minnesota's fish and wildlife agency, so check its current regulations before you go.
Explore Eddy Lake across LakeQuality
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Where this data comes from
5 measurements from 1 monitoring station, 2021. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- Minnesota Pollution Control Agency - Ambient Surface Water
MNPCA5 samples · 2021
Analytical methods
- Field measurement/observation, generic method
Monitoring station identifiers (1)
EPA condition classes from the National Lakes Assessment (EPA 841-R-24-006, Table 6-3), applied by ecoregion. See where the data comes from and data sources.
Other records on this page
Impairment status from EPA ATTAINS 303(d) database
Lake details from Minnesota DNR LakeFinder
Ice data from Minnesota DNR Climate