Lake Napowan

Waushara County, Wisconsin

OverviewFacts & Figures

Physical Characteristics

Surface Area (Acres)52
Maximum Depth (ft)18
Mean Depth (ft)—
Shoreline (miles)—
Bottom Composition75% sand, 0% gravel, 0% rock, 25% muck
Water Clarity — Secchi Depth (ft)—
Trophic Status—
Drainage BasinSEEPAGE
Lake Classlake
Public Access—
Township—
GPS Coordinates44.14760° N, 89.15250° W
WBIC (DNR ID)190200

Fish Species

3 species documented

AbundantCommonPresentRare
SpeciesAbundanceLast Survey
Largemouth BassCommon—
Northern PikePresent—
PanfishPresent—

Boat Landings

1 landing

NameTypeRampTrailersFee♿
Lake Napowan Boat RampRAMP—1-5NoNo

Invasive Species

Invasive species have been documented in or near this lake. Please clean, drain, and dry all watercraft and equipment before leaving to prevent spread.

SpeciesStatusFirst Detected
Banded Mystery SnailConfirmed—
Curly-Leaf PondweedConfirmed—
Eurasian Water-MilfoilConfirmed—
Hybrid Eurasian / Northern Water-MilfoilConfirmed—

Data sourced from Wisconsin DNR lake surveys. Last scraped: 4/30/2026.

Lake Napowan — Facts & Figures | Stay Northern