Dace Lake
Dace Lake in Polk County, Wisconsin has a water quality grade of B (Good). Phosphorus: 21.3 µg/L.
- Type
- Mesotrophic
- Trend
- ↑ Improving
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Dace Lake is a mesotrophic lake in Polk County, Wisconsin. Water quality is graded B based on 1 sampling years through 2023. Overall water quality is improving over recent sampling years. Compared to the 54 other monitored lakes in Polk County, Dace Lake ranks #24 for water quality.
Source: EPA Water Quality Portal sampling records, Wisconsin DNR Surface Water, last sampled 2023-09-12. Grade methodology: LakeQuality methodology.
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Swimming Safety
Grade onlyLimited data
Based on clarity and algae grades from past sampling — we do not hold live water temperature and a current cyanobacteria reading for this lake. Check your state or county health department before you swim.
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 recent samples | |
| Phosphorus | 21.3 µg/L | Good |
| Chlorophyll-a (Algae) | No recent samples | |
| Trophic State Index (TSI) | 48 | Mesotrophic |
Moderate nutrients, good water quality
Where to stay near Dace Lake
Compare lakeside cabins, hotels, and vacation rentals near Dace Lake in Polk County, Wisconsin — live availability and prices for your trip. Switch the map to Satellite to see the lake and how close each stay is to the water.
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Fishing Dace Lake
Water Quality Trend: ↑ Improving
Based on 6 years of monitoring data (2020-2025).
| Metric | Trend | Change/Year | Years |
|---|---|---|---|
| Water Clarity | → Stable | +0.07 m/yr | 6 |
| Phosphorus | ↑ Improving | -2.8 µg/L/yr | 6 |
EPA Impairment Status
Dace Lake is officially listed as impaired under Clean Water Act §303(d) in the 2024 EPA reporting cycle (IR category 5R).
Causes of impairment
Source: EPA ATTAINS assessment unit WI10005006 · Official waterbody report · Matched by proximity (1.58 km)
County Ranking
Ranked #24 of 55 lakes in Polk County
Nearby Lakes in Polk County
Frequently asked questions about Dace Lake
Where is Dace Lake?
- Dace Lake is a lake in Polk County, Wisconsin. LakeQuality grades it B for nutrients and algae. The letter is not a swimming clearance.
What is the water quality grade for Dace Lake?
- Dace Lake in Polk County, Wisconsin has a water quality grade of B (Good). Phosphorus: 21.3 µg/L.
Is Dace Lake safe to swim in?
- Good for swimming, clear water with low algae levels. Dace Lake has a water quality grade of B (Good). Always check local health department advisories before swimming.
Explore Dace Lake across LakeQuality
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Moderate nutrients, good water quality
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State Parks Near Dace Lake
Other Grade B Lakes in Wisconsin
Mesotrophic Lakes in Wisconsin
Where this data comes from
3 measurements from 1 monitoring station, 2023. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- Wisconsin Department of Natural Resources
WIDNR_WQX3 samples · 2023
Analytical methods
- Phosphorus by Colorimetry
Monitoring station identifiers (1)
Grade thresholds from the EPA National Lakes Assessment (EPA 841-R-24-006, Table 6-3), applied by ecoregion. See how grades are calculated and data sources.
Other records on this page
Impairment status from EPA ATTAINS 303(d) database