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B

Echo Lake

Iron County, WisconsinMesotrophic

Echo Lake carries a solid B grade — strong on most parameters, with measurements that hold up well across the summer season. The lake's weakest score is on Secchi depth — the water looks more turbid than its phosphorus number alone would predict.

A TSI near 49 places Echo Lake in the mesotrophic band — moderate productivity, with seasonal swings between clearer spring water and richer late-summer conditions. 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. Echo Lake sits at rank 17 of 33 in Iron County, in the lower half of the local distribution.

No invasive species are currently listed at Echo Lake — the lake remains off the Wisconsin infested-waters roster. The state fisheries records do not list documented species for Echo Lake, which usually reflects a lack of formal fisheries survey work rather than an empty lake. 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, Wisconsin DNR Surface Water, last sampled 2025-08-23. Grade methodology: LakeGrade methodology.

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Swimming Safety

Good for swimming, clear water with low algae levels

Water Quality Grade: B, Good

Murky, only visible to about 6 ft. Phosphorus level: 19.3 µg/L. Trophic State Index: 49.

MetricValueGrade
Water Clarity (Secchi Depth)6 ftD
Phosphorus19.3 µg/LA
Chlorophyll-a (Algae)No data
Trophic State Index (TSI)49Mesotrophic

Moderate nutrients, good water quality

Water Quality Trend: Improving

Based on 7 years of monitoring data (2020-2025).

MetricTrendChange/YearYears
Water Clarity Improving+0.736 m/yr6
Phosphorus Improving-1.75 µg/L/yr7
See year-by-year chart →

Recreation & Access

1
Boat Landings
Yes
Public Access

Location

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County Ranking

Ranked #17 of 33 lakes in Iron County

Cleaner Lakes Within 30 Miles

Echo Lake holds Grade B. 3 nearby lakes hold higher grades.

See full comparison →

Nearby Lakes in Iron County

DNR Reports & Resources

Wisconsin DNR Fisheries scientists publish multi-year survey reports for Echo Lake covering fish populations, stocking, water quality, and management. 1 report on file.

Data Sources

Water quality data from the EPA Water Quality Portal

Grading methodology based on Metropolitan Council standards

Public boat-access points from the USGS National Boat Ramps inventory

Most recent sample: 2025-08-23

Monitoring stations: 2

Where to stay near Echo Lake

Compare lakeside cabins, hotels, and vacation rentals near Echo Lake in Iron County, Wisconsin — live availability and prices for your trip.

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