Hawthorne Hills South Pond
Dane County, WisconsinView mapDirections
Wisconsin DNR publishes the water-quality measurements for Hawthorne Hills South Pond. Here is what has been measured.
- Limited data
Hawthorne Hills South Pond in Dane County, Wisconsin has water-quality measurements published by Wisconsin DNR, shown here as reported. Phosphorus: 191 µg/L.
Hawthorne Hills South Pond is a lake in Dane County, Wisconsin. Overall water quality is declining over recent sampling years.
Source: EPA Water Quality Portal sampling records, Wisconsin DNR Surface Water, last sampled 2021-10-05. Methodology: how these readings are compared.
Swimming conditions
No readingLimited data
Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
Whether Hawthorne Hills South Pond is safe to swim in today is a call for the Wisconsin Department of Natural Resources and the county health department, who post current advisories. LakeQuality does not issue swimming clearances.
Water quality measurements for Hawthorne Hills South Pond
These are the measurements Wisconsin DNR publishes for Hawthorne Hills South Pond, shown as reported. The condition class beside each reading is the EPA National Lakes Assessment class for this lake’s ecoregion.
No clarity data. Phosphorus 191 µg/L. TSI 80.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | No reading How deep a black-and-white disk stays visible from the surface. Higher is clearer. | |
| Total phosphorus | 191µg/L | Measured, not scored The nutrient that most limits algae growth in freshwater. More phosphorus, more algae potential. |
| Chlorophyll-a (algae) | No reading The green pigment in algae — a direct measure of how much algae is in the water. | |
| Trophic state (TSI)Carlson's 0–100 index of how much algae a lake can support, from clarity, phosphorus and chlorophyll-a. | 80 | Hypereutrophic OligotrophicMesotrophicEutrophicHypereutrophic |
Very high nutrients, dense algae, poor clarity
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Fishing Hawthorne Hills South Pond
Water quality readings over time
2 seasons of samples on record (2020–2021). Calling a direction takes at least 4 years of the same measurement.
Phosphorus
Worsening+13.5 µg/L/yr2 years
Nearby Lakes in Dane County
Frequently asked questions about Hawthorne Hills South Pond
Where is Hawthorne Hills South Pond?
- Hawthorne Hills South Pond is a lake in Dane County, Wisconsin. Its water-quality measurements are published by Wisconsin DNR and shown on this page as reported.
What is the water quality of Hawthorne Hills South Pond?
- Hawthorne Hills South Pond in Dane County, Wisconsin has water-quality measurements published by Wisconsin DNR, shown here as reported. Phosphorus: 191 µg/L.
Is Hawthorne Hills South Pond safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
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Where this data comes from
2 measurements from 1 monitoring station, 2021. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- Wisconsin Department of Natural Resources
WIDNR_WQX2 samples · 2021
Analytical methods
- Phosphorus by Colorimetry
Monitoring station identifiers (1)
EPA condition classes from the National Lakes Assessment (EPA 841-R-24-006, Table 6-3), applied by ecoregion. See where the data comes from and data sources.