Trout Bog Lake
Trout Bog Lake in Vilas County, Wisconsin has a water quality grade of B (Good). Phosphorus: 16.5 µg/L. Maximum depth: 24 ft. Surface area: 2 acres.
- Max depth
- 24 ft
- Area
- 2 acres
- Type
- Mesotrophic
- Trend
- ↑ Improving
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Trout Bog Lake is a 2-acre mesotrophic lake in Vilas County, Wisconsin with a maximum depth of 24 feet. Water quality is graded B based on 1 sampling years through 2026. Overall water quality is improving over recent sampling years. Compared to the 102 other monitored lakes in Vilas County, Trout Bog Lake ranks #80 for water quality.
Source: EPA Water Quality Portal sampling records, Wisconsin DNR Surface Water, last sampled 2026-05-14. Grade methodology: LakeQuality methodology.
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Swimming Safety
Grade onlyLimited data
Based on clarity and algae grades from past sampling — we do not hold live water temperature and a current cyanobacteria reading for this lake. Check your state or county health department before you swim.
Good for swimming, clear water with low algae levels
Water Quality Grade: B (Good)
No clarity data. Phosphorus level: 16.5 µg/L. Trophic State Index: 45.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | No recent samples | |
| Phosphorus | 16.5 µg/L | Good |
| Chlorophyll-a (Algae) | No recent samples | |
| Trophic State Index (TSI) | 45 | Mesotrophic |
Moderate nutrients, good water quality
Where to stay near Trout Bog Lake
Compare lakeside cabins, hotels, and vacation rentals near Trout Bog Lake 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.
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WI DNR Lake Profile
Authoritative data from the Wisconsin DNR LakePages. 1 station on file (most recent sample 2025).
Lake Details
| Characteristic | Value |
|---|---|
| Maximum Depth | 24 ft |
| Surface Area | 2 acres |
Lake Size & Watershed
Size, shoreline, and watershed area from HydroLAKES (HydroSHEDS).
Fishing Trout Bog Lake
Water Quality Trend: ↑ Improving
Based on 3 years of monitoring data (2020-2025).
| Metric | Trend | Change/Year | Years |
|---|---|---|---|
| Phosphorus | ↑ Improving | -1.25 µg/L/yr | 3 |
County Ranking
Ranked #80 of 103 lakes in Vilas County
Nearby Lakes in Vilas County
Frequently asked questions about Trout Bog Lake
Where is Trout Bog Lake?
- Trout Bog Lake is a lake in Vilas County, Wisconsin. LakeQuality grades it B for nutrients and algae. The letter is not a swimming clearance.
What is the water quality grade for Trout Bog Lake?
- Trout Bog Lake in Vilas County, Wisconsin has a water quality grade of B (Good). Phosphorus: 16.5 µg/L. Maximum depth: 24 ft. Surface area: 2 acres.
Is Trout Bog Lake safe to swim in?
- Good for swimming, clear water with low algae levels. Trout Bog Lake has a water quality grade of B (Good). Always check local health department advisories before swimming.
How deep is Trout Bog Lake?
- Trout Bog Lake has a maximum depth of 24 feet. The lake covers 2 acres.
Explore Trout Bog Lake across LakeQuality
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Moderate nutrients, good water quality
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Where this data comes from
15 measurements from 1 monitoring station, 2020–2026. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- Wisconsin Department of Natural Resources
WIDNR_WQX15 samples · 2020–2026
Analytical methods
- Phosphorus by Colorimetry
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
Lake size & watershed from HydroLAKES (HydroSHEDS)
Fish and recreation data from Wisconsin DNR Lakes