Stormy Lake
Vilas County, WisconsinOligotrophic
Stormy Lake sits at the top of the Wisconsin DNR grading rubric with an A, a mark reached by the cleanest lakes in Wisconsin. Clarity, phosphorus, and chlorophyll-a all rate similarly, so there is no obvious single lever to pull on watershed management.
A TSI value of 37 puts Stormy Lake in the oligotrophic range, where biological productivity stays low and the water column remains clear. At 63 ft of maximum depth, Stormy Lake stratifies reliably through the summer — the hypolimnion stays cooler and clearer than the surface layer suggests. At 523 acres, Stormy Lake fits the Wisconsin median for monitored lakes, with partial shoreline records. Stormy Lake ranks 37 of 191 in Vilas County, putting it in the upper tier of locally monitored lakes.
An invasive species record — Chinese Mystery Snail — has been logged at Stormy Lake; Wisconsin DNR maintains the official infested-waters list. The fishery is bass-led, with 5 documented species across the lake's records. A documented public access point at Stormy Lake makes the lake usable for shore fishing, paddle craft, and trailered boats. Monitoring depth is thin here: the LakeGrade rubric is applied to a small number of sample years, and the grade will be revised as more data accumulates.
Source: EPA Water Quality Portal sampling records, Wisconsin DNR Surface Water, last sampled 2023-09-18. Grade methodology: LakeGrade methodology.
Watch Stormy Lake water quality
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Swimming Safety
Excellent for swimming, crystal clear water with minimal algae
Water Quality Grade: A, Excellent
Crystal clear, you can see 18 ft down. Phosphorus level: 10.5 µg/L. Trophic State Index: 37.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 18 ft | A |
| Phosphorus | 10.5 µg/L | A |
| Chlorophyll-a (Algae) | No data | |
| Trophic State Index (TSI) | 37 | Oligotrophic |
Low nutrients, clear water, excellent for swimming
Lake Details
| Characteristic | Value |
|---|---|
| Maximum Depth | 63 ft |
| Surface Area | 523 acres |
| Public Access | Yes |
Fish Species
Click a species to see every graded lake where it is documented.
→ Best fishing times for Stormy Lake (14-day solunar calendar)
→ Is it safe to eat fish from Stormy Lake? (mercury & PFAS guide)
→ Stormy Lake fishing regulations (limits, seasons, special rules)
Invasive & Introduced Species
Red chips are ecologically harmful invasive species. Gray chips are stocked or introduced fish that aren't a current ecological concern.
Recreation & Access
Location
County Ranking
Ranked #37 of 191 lakes in Vilas County
Nearby Lakes in Vilas County
More Wisconsin Lake Rankings
Other Grade A Lakes in Wisconsin
Washington County · Clarity: 11.8 ft
Washington County · Clarity: 12.6 ft
Walworth County · Clarity: 11 ft
Waukesha County · Clarity: 11.3 ft
Walworth County · Clarity: 20.2 ft
Kenosha County · Clarity: 10 ft
Oligotrophic Lakes in Wisconsin
Compare Stormy Lake With Nearby Lakes
WI DNR Lake Profile
Authoritative data from the Wisconsin DNR LakePages. 1 station on file (most recent sample 2023).
Fish Species (DNR-rated)
Data Sources
Water quality data from the EPA Water Quality Portal
Grading methodology based on Metropolitan Council standards
Fish and recreation data from Wisconsin DNR Lakes
Public boat-access points from the USGS National Boat Ramps inventory
Most recent sample: 2023-09-18
Monitoring stations: 1
Where to stay near Stormy Lake
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