Deer Lake
Deer Lake in Iron County, Wisconsin is not rated for water quality — its monitoring record does not meet the evidence bar. Water clarity: 7.5 ft visibility. Maximum depth: 18 ft. Surface area: 33 acres.
- Clarity
- 7.5 ft
- Max depth
- 18 ft
- Area
- 33 acres
- Trend
- ↑ Improving
- Public access
- Yes
Next lake in Iron County
Why Deer Lake 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 Deer Lake, the only measurement available is water clarity, which is not a water-quality indicator on its own — EPA's National Lakes Assessment does not grade clarity. Sampling here has recorded water clarity, but not phosphorus 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.
Deer Lake is a 33-acre lake in Iron County, Wisconsin with a maximum depth of 18 feet. Overall water quality is improving over recent sampling years. The lake supports 2 documented fish species including Panfish and Largemouth Bass. Public access is available with 1 public boat landing.
Source: EPA Water Quality Portal sampling records, Wisconsin DNR Surface Water, last sampled 2023-08-21. Grade methodology: LakeGrade methodology.
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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 Deer Lake
These readings exist but do not meet the evidence bar for an A–F grade — see why.
Moderate clarity, visible to about 7.5 ft. Trophic State Index: 48.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 7.5 ft | Not graded |
| Phosphorus | No recent samples | |
| Chlorophyll-a (Algae) | No recent samples | |
| Trophic State Index (TSI) | 48 | Mesotrophic |
Moderate nutrients, good water quality
Where to stay near Deer Lake
Compare lakeside cabins, hotels, and vacation rentals near Deer 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 Deer Lake
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Lake Details
| Characteristic | Value |
|---|---|
| Maximum Depth | 18 ft |
| Surface Area | 33 acres |
| Public Access | Yes |
Recreation & Access
- One Man LakePublic
Fish Species
Click a species to see every graded lake where it is documented.
Fishing Deer Lake
WI DNR Lake Profile
Authoritative data from the Wisconsin DNR LakePages. 1 station on file (most recent sample 2023).
Fish Species (DNR-rated)
Water Quality Trend: ↑ Improving
Based on 7 years of monitoring data (2020-2025).
| Metric | Trend | Change/Year | Years |
|---|---|---|---|
| Water Clarity | ↑ Improving | +0.277 m/yr | 7 |
| Phosphorus | → Stable | +0.13 µg/L/yr | 7 |
Graded lakes near Deer Lake
Deer Lake has no grade, but these lakes within a short drive do.
Nearby Lakes in Iron County
Frequently asked questions about Deer Lake
What is the water quality grade for Deer Lake?
- Deer Lake in Iron County, Wisconsin is not rated for water quality — its monitoring record does not meet the evidence bar. Water clarity: 7.5 ft visibility. Maximum depth: 18 ft. Surface area: 33 acres.
Is Deer Lake safe to swim in?
- Not rated for swimming — there is not enough monitoring data to judge this lake. Deer Lake is not rated for water quality — its monitoring record does not meet the evidence bar. Always check local health department advisories before swimming.
How deep is Deer Lake?
- Deer Lake has a maximum depth of 18 feet. The lake covers 33 acres.
What fish are in Deer Lake?
- Fish species found in Deer Lake include Panfish, Largemouth Bass. Deer Lake is located in Iron County, Wisconsin.
Are there boat ramps on Deer Lake?
- Deer Lake has 1 documented boat landing in the USGS National Boat Ramps inventory. Named access points include One Man Lake. Public access is listed as yes.
Explore Deer Lake across LakeGrade
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Where this data comes from
7 measurements from 1 monitoring station, 2021–2023. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- Wisconsin Department of Natural Resources
WIDNR_WQX7 samples · 2021–2023
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
Named boat-access points from the USGS National Boat Ramps inventory