Dace Lake
Polk County, WisconsinLimited DataMesotrophic
Dace Lake carries a solid B grade — strong on most parameters, with measurements that hold up well across the summer season. Sub-grades cluster within a single letter of each other, which usually means the lake is in stable trophic balance rather than fighting one specific stressor.
A TSI near 48 places Dace 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. Within Polk County's 77 graded lakes, Dace Lake ranks 57 — below the local median, though not at the bottom.
No invasive species are currently listed at Dace Lake — the lake remains off the Wisconsin infested-waters roster. The state fisheries records do not list documented species for Dace 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 2023-09-12. 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: 21.3 µg/L. Trophic State Index: 48.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | No data | |
| Phosphorus | 21.3 µg/L | B |
| Chlorophyll-a (Algae) | No data | |
| Trophic State Index (TSI) | 48 | Mesotrophic |
Moderate nutrients, good water quality
Water Quality Trend: ↑ Improving
Based on 7 years of monitoring data (2020-2025).
| Metric | Trend | Change/Year | Years |
|---|---|---|---|
| Water Clarity | ↑ Improving | +0.325 m/yr | 7 |
| Phosphorus | ↑ Improving | -2.8 µg/L/yr | 6 |
Location
County Ranking
Ranked #57 of 77 lakes in Polk County
Cleaner Lakes Within 30 Miles
Dace Lake holds Grade B. 4 nearby lakes hold higher grades.
- APipe LakePolk County · 1.6 mi · Higher grade (B → A)
- ALong LakePolk County · 2.7 mi · Higher grade (B → A)
- ANorth LakeBarron County · 3.6 mi · Higher grade (B → A)
- AEmber LakePolk County · 3.9 mi · Higher grade (B → A)
Nearby Lakes in Polk County
More Wisconsin Lake Rankings
State Parks Near Dace Lake
Other Grade B Lakes in Wisconsin
Mesotrophic Lakes in Wisconsin
Data Sources
Water quality data from the EPA Water Quality Portal
Grading methodology based on Metropolitan Council standards
Most recent sample: 2023-09-12
Monitoring stations: 1