Bad River Slough
Bad River Slough in Ashland County, Wisconsin is not rated for water quality — its monitoring record does not meet the evidence bar. Surface area: 270 acres.
- Area
- 270 acres
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Why Bad River Slough has no grade
We grade a lake only when the monitoring record supports a letter: 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 Bad River Slough, no water-quality sampling on record for this lake.
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.
Bad River Slough is a 270-acre lake in Ashland County, Wisconsin.
Source: EPA Water Quality Portal sampling records, Wisconsin DNR Surface Water, last sampled recent years. Grade methodology: LakeQuality methodology.
Watch Bad River Slough water quality
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Swimming Safety
Not ratedElevated nutrients
Not rated for swimming — there is not enough monitoring data to judge this lake
Water quality measurements for Bad River Slough
These readings exist but are not enough for an A–F grade — see why.
No clarity data. Trophic State Index: undefined.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | No recent samples | |
| Phosphorus | No recent samples | |
| Chlorophyll-a (Algae) | No recent samples | |
| Trophic State Index (TSI) |
Where to stay near Bad River Slough
Compare lakeside cabins, hotels, and vacation rentals near Bad River Slough in Ashland 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 Bad River Slough
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Lake Details
| Characteristic | Value |
|---|---|
| Surface Area | 270 acres |
No bathymetric survey has been published for Bad River Slough, so its depth is not documented here.
Fishing Bad River Slough
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Frequently asked questions about Bad River Slough
Where is Bad River Slough?
- Bad River Slough is a lake in Ashland County, Wisconsin. LakeQuality has not rated this lake (UNRATED) — no water-quality sampling on record for this lake.
What is the water quality grade for Bad River Slough?
- Bad River Slough in Ashland County, Wisconsin is not rated for water quality — its monitoring record does not meet the evidence bar. Surface area: 270 acres.
Is Bad River Slough safe to swim in?
- Not rated for swimming — there is not enough monitoring data to judge this lake. Bad River Slough 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
Measurements for Bad River Slough come from the EPA Water Quality Portal. Per-sample source details are not recorded for this lake.