Cox Hollow Lake
Cox Hollow Lake in Iowa County, Wisconsin is not rated for water quality — its monitoring record does not meet the evidence bar. Surface area: 82 acres.
- Area
- 82 acres
- Public access
- Yes
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Why Cox Hollow Lake 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 Cox Hollow Lake, 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.
Cox Hollow Lake is a 82-acre lake in Iowa County, Wisconsin. Limited fish-species data available. Public access is available with 1 public boat landing.
Source: EPA Water Quality Portal sampling records, Wisconsin DNR Surface Water, last sampled recent years. Grade methodology: LakeQuality methodology.
Watch Cox Hollow Lake 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 Cox Hollow Lake
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 Cox Hollow Lake
Compare lakeside cabins, hotels, and vacation rentals near Cox Hollow Lake in Iowa 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 Cox Hollow Lake
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DNR Reports & Resources
Wisconsin DNR Fisheries scientists publish multi-year survey reports for Cox Hollow Lake covering fish populations, stocking, water quality, and management. 1 report on file.
These links open on the official state DNR websites (Wisconsin DNR survey PDFs · Minnesota DNR LakeFinder).
- 2022Cox Hollow Lake comprehensive survey 2022Comprehensive Survey · WI DNR · 2022 (PDF)
Lake Details
| Characteristic | Value |
|---|---|
| Surface Area | 82 acres |
| Public Access | Yes |
No bathymetric survey has been published for Cox Hollow Lake, so its depth is not documented here.
Recreation & Access
- Cox Hollow LakePublic
Named access points in the USGS National Boat Ramps inventory, within about 3 miles. More lakes with boat ramps
Fishing Cox Hollow Lake
Nearby Lakes in Iowa County
Frequently asked questions about Cox Hollow Lake
Where is Cox Hollow Lake?
- Cox Hollow Lake is a lake in Iowa 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 Cox Hollow Lake?
- Cox Hollow Lake in Iowa County, Wisconsin is not rated for water quality — its monitoring record does not meet the evidence bar. Surface area: 82 acres.
Is Cox Hollow Lake safe to swim in?
- Not rated for swimming — there is not enough monitoring data to judge this lake. Cox Hollow Lake is not rated for water quality — its monitoring record does not meet the evidence bar. Always check local health department advisories before swimming.
Are there boat ramps on Cox Hollow Lake?
- Cox Hollow Lake has 1 documented boat landing in the USGS National Boat Ramps inventory. Named access points include Cox Hollow Lake. Public access is listed as yes.
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Where this data comes from
Measurements for Cox Hollow Lake come from the EPA Water Quality Portal. Per-sample source details are not recorded for this lake.
Other records on this page
Named boat-access points from the USGS National Boat Ramps inventory