Gateway Pond
Gateway Pond in Dane County, Wisconsin is not rated for water quality — its monitoring record does not meet the evidence bar. Phosphorus: 319.5 µg/L.
- Trend
- ↑ Improving
Next lake in Dane County
Why Gateway Pond has no grade
We grade a lake only when its monitoring record clears the evidence bar: at least three phosphorus or chlorophyll-a samples in the last ten years, scored against EPA National Lakes Assessment thresholds for this lake’s ecoregion. For Gateway Pond, no nutrient or algae measurement meets the evidence bar (at least 3 samples within 10 years). Sampling here has recorded phosphorus, but not water clarity and algae (chlorophyll-a).
Not Rated is not an F. It is EPA Integrated Reporting Category 3 — insufficient information. The water here may be excellent or poor; nobody has measured enough of it to say. Everything below that has been measured is still reported on this page.
Sampling is run by WI DNR and volunteer programs, and published through the EPA Water Quality Portal. Read the full grading methodology.
Gateway Pond is a lake in Dane County, Wisconsin. Overall water quality is improving over recent sampling years.
Source: EPA Water Quality Portal sampling records, Wisconsin DNR Surface Water, last sampled 2020-10-05. Grade methodology: LakeGrade methodology.
Watch Gateway Pond water quality
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Swimming Safety
Not ratedLimited data
Not rated for swimming — there is not enough monitoring data to judge this lake
Water quality measurements for Gateway Pond
These readings exist but do not meet the evidence bar for an A–F grade — see why.
No clarity data. Phosphorus level: 319.5 µg/L. Trophic State Index: 87.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | No recent samples | |
| Phosphorus | 319.5 µg/L | Not graded |
| Chlorophyll-a (Algae) | No recent samples | |
| Trophic State Index (TSI) | 87 | Hypereutrophic |
Very high nutrients, dense algae, poor clarity
Where to stay near Gateway Pond
Compare lakeside cabins, hotels, and vacation rentals near Gateway Pond in Dane 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.
Top-rated places to stay near Gateway Pond
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Fishing Gateway Pond
Water Quality Trend: ↑ Improving
Based on 2 years of monitoring data (2020-2025).
| Metric | Trend | Change/Year | Years |
|---|---|---|---|
| Phosphorus | ↑ Improving | -132 µg/L/yr | 2 |
Graded lakes near Gateway Pond
Gateway Pond has no grade, but these lakes within a short drive do.
Nearby Lakes in Dane County
Frequently asked questions about Gateway Pond
What is the water quality grade for Gateway Pond?
- Gateway Pond in Dane County, Wisconsin is not rated for water quality — its monitoring record does not meet the evidence bar. Phosphorus: 319.5 µg/L.
Is Gateway Pond safe to swim in?
- Not rated for swimming — there is not enough monitoring data to judge this lake. Gateway Pond is not rated for water quality — its monitoring record does not meet the evidence bar. Always check local health department advisories before swimming.
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Where this data comes from
4 measurements from 1 monitoring station, 2020. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- Wisconsin Department of Natural Resources
WIDNR_WQX4 samples · 2020
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
Fish and recreation data from Wisconsin DNR Lakes