Upson Lake
Upson Lake in Iron County, Wisconsin is not rated for water quality — its monitoring record does not meet the evidence bar. Surface area: 49 acres.
- Area
- 49 acres
- Public access
- Yes
Next lake in Iron County
Swipe left or right on this bar to open the next or previous lake.
Why Upson 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 Upson 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.
Upson Lake is a 49-acre lake in Iron 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 Upson Lake water quality
Subscribe for LakeQuality updates by email. No spam, unsubscribe anytime.
Swimming Safety
Not ratedElevated nutrients
Not rated for swimming — there is not enough monitoring data to judge this lake
Water quality measurements for Upson 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 Upson Lake
Compare lakeside cabins, hotels, and vacation rentals near Upson Lake in Iron 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 Upson Lake
Availability and prices from Stay22 partners (Booking.com, Vrbo, Expedia). We may earn a commission from bookings, at no extra cost to you.
Planning a whole trip? See where to stay at Wisconsin’s top lakes →
DNR Reports & Resources
Wisconsin DNR Fisheries scientists publish multi-year survey reports for Upson 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).
- 2024Upson Lake summer netting survey, 2024Netting Survey · WI DNR · 2024 (PDF)
Lake Details
| Characteristic | Value |
|---|---|
| Surface Area | 49 acres |
| Public Access | Yes |
No bathymetric survey has been published for Upson Lake, so its depth is not documented here.
Recreation & Access
- Upson LakePublic
Named access points in the USGS National Boat Ramps inventory, within about 3 miles. More lakes with boat ramps
Fishing Upson Lake
Nearby Lakes in Iron County
Frequently asked questions about Upson Lake
Where is Upson Lake?
- Upson Lake is a lake in Iron 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 Upson Lake?
- Upson Lake in Iron County, Wisconsin is not rated for water quality — its monitoring record does not meet the evidence bar. Surface area: 49 acres.
Is Upson Lake safe to swim in?
- Not rated for swimming — there is not enough monitoring data to judge this lake. Upson 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 Upson Lake?
- Upson Lake has 1 documented boat landing in the USGS National Boat Ramps inventory. Named access points include Upson Lake. Public access is listed as yes.
Explore Upson Lake across LakeQuality
Fish species and top-graded lakes across Wisconsin
Fish species and best lakes in Iron County
Species activity outlook by water temperature and season
Top lakes and where to stay in the Northwoods Wisconsin area
Where to stay at Wisconsin's top lakes, each with its grade
Lakes in the Lake Superior Basin (MN+WI), ranked by water quality
Wisconsin's cleanest and most-polluted lakes, ranked
More Wisconsin Lake Rankings
State Parks Near Upson Lake
Other Lakes in Wisconsin
Where this data comes from
Measurements for Upson 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