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B

Bass Lake

Waupaca County, WisconsinLimited DataMesotrophic

Bass Lake carries a solid B grade — strong on most parameters, with measurements that hold up well across the summer season. Clarity, phosphorus, and chlorophyll-a all rate similarly, so there is no obvious single lever to pull on watershed management.

Mesotrophic conditions dominate at Bass Lake: enough nutrients for a healthy fishery, not so much that algal blooms become a chronic problem. A maximum depth of 35 ft puts Bass Lake in the middle of Wisconsin's depth distribution. At 19 acres, Bass Lake sits below the Wisconsin median: a small water where shoreline activity has an outsized effect on water quality. Within Waupaca County's 25 graded lakes, Bass Lake ranks 17 — below the local median, though not at the bottom.

An invasive species record — Banded Mystery Snail — has been logged at Bass Lake; Wisconsin DNR maintains the official infested-waters list. Bass fishing is part of the appeal: the species list runs to 4, 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 2025-09-15. 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 10.5 ft. Trophic State Index: 43.

MetricValueGrade
Water Clarity (Secchi Depth)10.5 ftB
PhosphorusNo data
Chlorophyll-a (Algae)No data
Trophic State Index (TSI)43Mesotrophic

Moderate nutrients, good water quality

Lake Details

CharacteristicValue
Maximum Depth35 ft
Surface Area19 acres
Public AccessYes

Fish Species

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

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

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

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 SnailPurple Loosestrife

Water Quality Trend: Improving

Based on 7 years of monitoring data (2020-2025).

MetricTrendChange/YearYears
Water Clarity Improving+0.473 m/yr7
Phosphorus Stable-0.03 µg/L/yr6
See year-by-year chart →

Recreation & Access

3
Boat Landings
Yes
Public Access

Location

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County Ranking

Ranked #17 of 25 lakes in Waupaca County

Cleaner Lakes Within 30 Miles

Bass Lake holds Grade B. 4 nearby lakes hold higher grades.

Nearby Lakes in Waupaca County

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: 2025-09-15

Monitoring stations: 1

Where to stay near Bass Lake

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

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