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B

West Bass Lake

Florence County, WisconsinLimited DataOligotrophic

West Bass Lake carries a solid B grade — strong on most parameters, with measurements that hold up well across the summer season. Sub-grades cluster within a single letter of each other, which usually means the lake is in stable trophic balance rather than fighting one specific stressor.

Trophically, West Bass Lake reads as oligotrophic — nutrient-poor, clear, and ecologically more sensitive to disturbance than richer lakes. A maximum depth of 19 ft puts West Bass Lake in the middle of Wisconsin's depth distribution. At 55 acres, West Bass Lake sits below the Wisconsin median: a small water where shoreline activity has an outsized effect on water quality. West Bass Lake sits at rank 25 of 39 in Florence County, in the lower half of the local distribution.

An invasive species record — Banded Mystery Snail — has been logged at West Bass Lake; Wisconsin DNR maintains the official infested-waters list. Bass fishing is part of the appeal: the species list runs to 2, anchored by largemouth and/or smallmouth bass. Public access is available — the lake is on the Wisconsin DNR public-access list. The grade is based on limited monitoring — fewer than three independent measurement years contribute, so future updates may shift the letter.

Source: EPA Water Quality Portal sampling records, Wisconsin DNR Surface Water, last sampled 2025-09-08. Grade methodology: LakeGrade methodology.

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Swimming Safety

Good for swimming, clear water with low algae levels

Water Quality Grade: B, Good

Good clarity, visible to about 14.4 ft. Trophic State Index: 39.

MetricValueGrade
Water Clarity (Secchi Depth)14.4 ftB
PhosphorusNo data
Chlorophyll-a (Algae)No data
Trophic State Index (TSI)39Oligotrophic

Low nutrients, clear water, excellent for swimming

Lake Details

CharacteristicValue
Maximum Depth19 ft
Surface Area55 acres
Public AccessYes

Fish Species

Click a species to see every graded lake where it is documented.

→ Best fishing times for West Bass Lake (14-day solunar calendar)

→ Is it safe to eat fish from West Bass Lake? (mercury & PFAS guide)

West Bass 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.

Banded Mystery Snail

Water Quality Trend: Improving

Based on 4 years of monitoring data (2020-2025).

MetricTrendChange/YearYears
Water Clarity Improving+1.346 m/yr4
See year-by-year chart →

Recreation & Access

1
Boat Landings
Yes
Public Access

Location

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County Ranking

Ranked #25 of 39 lakes in Florence County

Cleaner Lakes Within 30 Miles

West Bass Lake holds Grade B. One nearby lake has a higher grade.

Nearby Lakes in Florence County

WI DNR Lake Profile

Authoritative data from the Wisconsin DNR LakePages. 1 station on file (most recent sample 2025).

Fish Species (DNR-rated)

Largemouth Bass(Common)Panfish(Present)

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: 2025-09-08

Monitoring stations: 1

Where to stay near West Bass Lake

Compare lakeside cabins, hotels, and vacation rentals near West Bass Lake in Florence County, Wisconsin — live availability and prices for your trip.

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