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.
Track Inlet To Dunes Lake
Subscribe for LakeQuality updates by email. No spam, unsubscribe anytime.
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.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | No data | |
| Phosphorus | 28.9 µg/L | B |
| Chlorophyll-a (Algae) | No data | |
| Trophic State Index (TSI) | 53 | Eutrophic |
High nutrients, frequent algae, reduced clarity
Lake Details
| Characteristic | Value |
|---|---|
| Maximum Depth | 1 ft |
| Surface Area | 48 acres |
Water Quality Trend: ↑ Improving
Based on 2 years of monitoring data (2020-2025).
| Metric | Trend | Change/Year | Years |
|---|---|---|---|
| Water Clarity | ↑ Improving | +0.5 m/yr | 2 |
| Phosphorus | ↑ Improving | -21.9 µg/L/yr | 2 |
Location
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
More Wisconsin Lake Rankings
State Parks Near Inlet To Dunes Lake
Other Grade B Lakes in Wisconsin
Eutrophic Lakes in Wisconsin
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