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B

Inlet To Dunes Lake

Door County, WisconsinLimited DataEutrophic

On the LakeGrade scale Inlet To Dunes Lake grades a B, with clarity readings still being added and 29 µg/L of phosphorus placing it above the Wisconsin median.

At a TSI of 53, Inlet To Dunes Lake reads as eutrophic — nutrient-rich enough that summer algal growth and reduced clarity are expected, not unusual. Inlet To Dunes Lake is a shallow lake at 1 ft maximum depth, which means it warms quickly, mixes constantly, and amplifies nutrient inputs. The lake is compact at 48 acres, with partial shoreline records and little volume to buffer nutrient inputs. Inlet To Dunes Lake sits at rank 7 of 11 in Door County, in the lower half of the local distribution.

Inlet To Dunes Lake has no invasive species recorded in Wisconsin state databases as of 2021, though prevention practices still apply at all access points. The state fisheries records do not list documented species for Inlet To Dunes Lake, which usually reflects a lack of formal fisheries survey work rather than an empty lake. 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, Wisconsin DNR Surface Water, last sampled 2021-05-18. Grade methodology: LakeGrade methodology.

Reviewed by LakeQuality Editorial Team · Updated

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Swimming Safety

Good for swimming, clear water with low algae levels

Water Quality Grade: B, Good

No clarity data. Phosphorus level: 28.9 µg/L. Trophic State Index: 53.

MetricValueGrade
Water Clarity (Secchi Depth)No data
Phosphorus28.9 µg/LB
Chlorophyll-a (Algae)No data
Trophic State Index (TSI)53Eutrophic

High nutrients, frequent algae, reduced clarity

Lake Details

CharacteristicValue
Maximum Depth1 ft
Surface Area48 acres

Water Quality Trend: Improving

Based on 2 years of monitoring data (2020-2025).

MetricTrendChange/YearYears
Water Clarity Improving+0.5 m/yr2
Phosphorus Improving-21.9 µg/L/yr2

Location

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County Ranking

Ranked #7 of 11 lakes in Door County

Cleaner Lakes Within 30 Miles

Inlet To Dunes Lake holds Grade B. One nearby lake has a higher grade.

Nearby Lakes in Door County

WI DNR Lake Profile

Authoritative data from the Wisconsin DNR LakePages. 2 stations on file (most recent sample 2022).

Data Sources

Water quality data from the EPA Water Quality Portal

Grading methodology based on Metropolitan Council standards

Most recent sample: 2021-05-18

Monitoring stations: 1