Bass Lake
Bass Lake in Florence County, Wisconsin has a water quality grade of B (Good). Water clarity: 12 ft visibility. Phosphorus: 11.6 µg/L. Maximum depth: 16 ft. Surface area: 22 acres.
- Clarity
- 12 ft
- Max depth
- 16 ft
- Area
- 22 acres
- Type
- Mesotrophic
- Trend
- ↑ Improving
Next lake in Florence County
Bass Lake is a 22-acre mesotrophic lake in Florence County, Wisconsin with a maximum depth of 16 feet. Water quality is graded B based on 1 sampling years through 2025. Overall water quality is improving over recent sampling years. The lake supports 3 documented fish species including Panfish, Largemouth Bass, and Northern Pike. Compared to the 11 other monitored lakes in Florence County, Bass Lake ranks #1 for water quality.
Source: EPA Water Quality Portal sampling records, Wisconsin DNR Surface Water, last sampled 2025-08-25. Grade methodology: LakeGrade methodology.
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Swimming Safety
Grade onlyLow algae
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)
Good clarity, visible to about 12 ft. Phosphorus level: 11.6 µg/L. Trophic State Index: 40.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 12 ft | Not graded |
| Phosphorus | 11.6 µg/L | Good |
| Chlorophyll-a (Algae) | No recent samples | |
| Trophic State Index (TSI) | 40 | Mesotrophic |
Moderate nutrients, good water quality
Where to stay near Bass Lake
Compare lakeside cabins, hotels, and vacation rentals near Bass Lake in Florence 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 Bass Lake
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Lake Details
| Characteristic | Value |
|---|---|
| Maximum Depth | 16 ft |
| Surface Area | 22 acres |
Fish Species
Click a species to see every graded lake where it is documented.
Fishing Bass Lake
Invasive & Introduced Species
Red chips are ecologically harmful invasive species. Gray chips are stocked or introduced fish that aren't a current ecological concern.
WI DNR Lake Profile
Authoritative data from the Wisconsin DNR LakePages. Monitored by volunteers since 2020. 1 station on file (most recent sample 2025).
Fish Species (DNR-rated)
DNR Reports & Resources
Wisconsin DNR Fisheries scientists publish multi-year survey reports for Bass Lake covering fish populations, stocking, water quality, and management. 2 reports on file.
These links open on the official state DNR websites (Wisconsin DNR survey PDFs · Minnesota DNR LakeFinder).
- 2022East Bass Lake shocking and netting survey, 2022Netting Survey · WI DNR · 2022 (PDF)
- 2022West Bass Lake shocking and netting survey, 2022Netting Survey · WI DNR · 2022 (PDF)
Water Quality Trend: ↑ Improving
Based on 7 years of monitoring data (2020-2025).
| Metric | Trend | Change/Year | Years |
|---|---|---|---|
| Water Clarity | ↑ Improving | +0.357 m/yr | 6 |
| Phosphorus | → Stable | +0.11 µg/L/yr | 7 |
County Ranking
Ranked #1 of 12 lakes in Florence County
Nearby Lakes in Florence County
Frequently asked questions about Bass Lake
What is the water quality grade for Bass Lake?
- Bass Lake in Florence County, Wisconsin has a water quality grade of B (Good). Water clarity: 12 ft visibility. Phosphorus: 11.6 µg/L. Maximum depth: 16 ft. Surface area: 22 acres.
Is Bass Lake safe to swim in?
- Good for swimming, clear water with low algae levels. Bass Lake has a water quality grade of B (Good). Always check local health department advisories before swimming.
How deep is Bass Lake?
- Bass Lake has a maximum depth of 16 feet. The lake covers 22 acres.
What fish are in Bass Lake?
- Fish species found in Bass Lake include Panfish, Largemouth Bass, Northern Pike. Bass Lake is located in Florence County, Wisconsin.
Explore Bass Lake across LakeGrade
Fish species and top-graded lakes across Wisconsin
Fish species and best lakes in Florence County
Species activity outlook by water temperature and season
Where to stay at Wisconsin's top lakes, each with its grade
Moderate nutrients, good water quality
Wisconsin's cleanest and most-polluted lakes, ranked
More Wisconsin Lake Rankings
Other Grade B Lakes in Wisconsin
Mesotrophic Lakes in Wisconsin
Where this data comes from
47 measurements from 1 monitoring station, 2020–2025. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- Wisconsin Department of Natural Resources
WIDNR_WQX47 samples · 2020–2025
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
Fish and recreation data from Wisconsin DNR Lakes