Upper Sugarbush Lake Deep
Upper Sugarbush Lake Deep in Vilas County, Wisconsin is not rated for water quality — its monitoring record does not meet the evidence bar. Water clarity: 15 ft visibility. Maximum depth: 29 ft. Surface area: 141 acres.
Wisconsin DNR lists Musky as common on Upper Sugarbush Lake Deep. DNR survey details →
- Clarity
- 15 ft
- Max depth
- 29 ft
- Area
- 141 acres
- Trend
- → Stable
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Why Upper Sugarbush Lake Deep 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 Sugarbush Lake Deep, no nutrient or algae measurement meets the evidence bar (at least 3 samples within 10 years). 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.
Upper Sugarbush Lake Deep is a 141-acre lake in Vilas County, Wisconsin with a maximum depth of 29 feet. Water clarity is improving over recent sampling years. The lake supports 6 documented fish species including Musky, Panfish, and Largemouth Bass.
Source: EPA Water Quality Portal sampling records, Wisconsin DNR Surface Water, last sampled 2023-09-20. Grade methodology: LakeQuality 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 Upper Sugarbush Lake Deep
These readings exist but are not enough for an A–F grade — see why.
Crystal clear, you can see 15 ft down. Trophic State Index: 38.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 15 ft | Not graded |
| Phosphorus | No recent samples | |
| Chlorophyll-a (Algae) | No recent samples | |
| Trophic State Index (TSI) | 38 | Oligotrophic |
Low nutrients, clear water, excellent for swimming
Where to stay near Upper Sugarbush Lake Deep
Compare lakeside cabins, hotels, and vacation rentals near Upper Sugarbush Lake Deep in Vilas 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 Sugarbush Lake Deep
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Wisconsin DNR lists Musky as common on Upper Sugarbush Lake Deep.
A DNR fisheries survey reports fish abundance and catch rates, not a water-quality grade. LakeQuality does not assign an A–F grade on Upper Sugarbush Lake Deep — official chemistry is on file, not a letter, and the water-quality trend over 5 years of monitoring is stable. Catch rate is not a swim clearance and is not a weekly bite report.
WI DNR Lake Profile
Authoritative data from the Wisconsin DNR LakePages. 1 station on file (most recent sample 2023).
Fish Species (DNR-rated)
Lake Details
| Characteristic | Value |
|---|---|
| Maximum Depth | 29 ft |
| Surface Area | 141 acres |
Fish Species
Click a species to see every graded lake where it is documented.
Fishing Upper Sugarbush Lake Deep
Invasive & Introduced Species
Red chips are ecologically harmful invasive species. Gray chips are stocked or introduced fish that aren't a current ecological concern.
Water Quality Trend: → Stable
Based on 5 years of monitoring data (2020-2025).
| Metric | Trend | Change/Year | Years |
|---|---|---|---|
| Water Clarity | ↑ Improving | +0.8 m/yr | 4 |
| Phosphorus | ↓ Declining | +0.52 µg/L/yr | 3 |
Graded lakes near Upper Sugarbush Lake Deep
Upper Sugarbush Lake Deep has no grade, but these lakes within a short drive do.
Nearby Lakes in Vilas County
Frequently asked questions about Upper Sugarbush Lake Deep
Where is Upper Sugarbush Lake Deep?
- Upper Sugarbush Lake Deep is a lake in Vilas County, Wisconsin. LakeQuality has not rated this lake (UNRATED) — there is not enough recent sampling to assign a letter.
What is the water quality grade for Upper Sugarbush Lake Deep?
- Upper Sugarbush Lake Deep in Vilas County, Wisconsin is not rated for water quality — its monitoring record does not meet the evidence bar. Water clarity: 15 ft visibility. Maximum depth: 29 ft. Surface area: 141 acres.
Is Upper Sugarbush Lake Deep safe to swim in?
- Not rated for swimming — there is not enough monitoring data to judge this lake. Upper Sugarbush Lake Deep 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 Upper Sugarbush Lake Deep?
- Upper Sugarbush Lake Deep has a maximum depth of 29 feet. The lake covers 141 acres.
What fish are in Upper Sugarbush Lake Deep?
- Fish species found in Upper Sugarbush Lake Deep include Musky, Panfish, Largemouth Bass, Smallmouth Bass, Northern Pike, Walleye. Upper Sugarbush Lake Deep is located in Vilas County, Wisconsin.
What did the DNR fisheries survey find at Upper Sugarbush Lake Deep?
- Wisconsin DNR lists Musky as common on Upper Sugarbush Lake Deep. A DNR fisheries survey reports fish abundance and catch rates, not a water-quality grade. LakeQuality does not assign an A–F grade on Upper Sugarbush Lake Deep — official chemistry is on file, not a letter, and the water-quality trend over 5 years of monitoring is stable. Catch rate is not a swim clearance and is not a weekly bite report.
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Where this data comes from
115 measurements from 2 monitoring stations, 2020–2023. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- Lac Du Flambeau Band of Lake Superior Chippewa Indians Water Program (Tribal)
LDFWATER2007115 samples · 2020–2023
Analytical methods
- Turbidity by Nephelometry
Monitoring station identifiers (2)
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
Lake size & watershed from HydroLAKES (HydroSHEDS)
Fish and recreation data from Wisconsin DNR Lakes