Dunes Lake Just Us of Outlet
Door County, WisconsinLimited DataEutrophic
Dunes Lake Just Us of Outlet carries a solid B grade — strong on most parameters, with measurements that hold up well across the summer season. The three sub-grades — clarity, phosphorus, and chlorophyll-a — track close together, so no single parameter is dragging the average.
Eutrophic conditions are the baseline here: clarity drops noticeably in late summer, and dissolved oxygen near the bottom can become a concern. 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. Within Door County's 11 graded lakes, Dunes Lake Just Us of Outlet ranks 8 — below the local median, though not at the bottom.
No invasive species are currently listed at Dunes Lake Just Us of Outlet — the lake remains off the Wisconsin infested-waters roster. The state fisheries records do not list documented species for Dunes Lake Just Us of Outlet, 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 2021-05-18. Grade methodology: LakeGrade methodology.
Swimming Safety
Good for swimming, clear water with low algae levels
Water Quality Grade: B, Good
No clarity data. Phosphorus level: 24.1 µg/L. Trophic State Index: 50.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | No data | |
| Phosphorus | 24.1 µg/L | B |
| Chlorophyll-a (Algae) | No data | |
| Trophic State Index (TSI) | 50 | Eutrophic |
High nutrients, frequent algae, reduced clarity
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 #8 of 11 lakes in Door County
Cleaner Lakes Within 30 Miles
Dunes Lake Just Us of Outlet holds Grade B. 3 nearby lakes hold higher grades.
- AClark LakeDoor County · 5.5 mi · Higher grade (B → A)
- AKangaroo LakeDoor County · 12.1 mi · Higher grade (B → A)
- AMi40 LakeDoor County · 15.9 mi · Higher grade (B → A)
Nearby Lakes in Door County
More Wisconsin Lake Rankings
State Parks Near Dunes Lake Just Us of Outlet
Other Grade B Lakes in Wisconsin
Eutrophic Lakes in Wisconsin
Data Sources
Water quality data from the EPA Water Quality Portal
Grading methodology based on Metropolitan Council standards
Fish and recreation data from Wisconsin DNR Lakes
Most recent sample: 2021-05-18
Monitoring stations: 1