Upper Marais
Upper Marais in Crawford County, Wisconsin is not rated for water quality — its monitoring record does not meet the evidence bar. Surface area: 44 acres.
- Area
- 44 acres
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Why Upper Marais 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 Upper Marais, 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.
Upper Marais is a 44-acre lake in Crawford County, Wisconsin.
Source: EPA Water Quality Portal sampling records, Wisconsin DNR Surface Water, last sampled recent years. Grade methodology: LakeQuality methodology.
Watch Upper Marais 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 Upper Marais
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 Upper Marais
Compare lakeside cabins, hotels, and vacation rentals near Upper Marais in Crawford 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 Upper Marais
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Lake Details
| Characteristic | Value |
|---|---|
| Surface Area | 44 acres |
No bathymetric survey has been published for Upper Marais, so its depth is not documented here.
Fishing Upper Marais
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Frequently asked questions about Upper Marais
Where is Upper Marais?
- Upper Marais is a lake in Crawford 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 Upper Marais?
- Upper Marais in Crawford County, Wisconsin is not rated for water quality — its monitoring record does not meet the evidence bar. Surface area: 44 acres.
Is Upper Marais safe to swim in?
- Not rated for swimming — there is not enough monitoring data to judge this lake. Upper Marais 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 Upper Marais come from the EPA Water Quality Portal. Per-sample source details are not recorded for this lake.