Marina · Wisconsin

Sister Bay Marina

Name: Sister Bay Marina
Address: US

48 seasonal slips · 50-ft cap · 11 ft channel · May 1 – October 15 calendar. Peninsula State Park 7 mi south · 469 sites · electric on 2 loops · 45-ft cap · books 11 months ahead.

Slips: 48 slips
RV staging: 0 dedicated spots
Water body: Sister Bay / Lake Michigan (Door County)

City harborseasonal tenureSister Bay / Lake Michigan (Door County)Cited .gov + operator sources

The rig-decision numbers

Slip capacity

48 slips

Max vessel length

50 ft LOA

Public ramp lanes

2 lanes

Channel depth · low water

11 ft

On-site services

Marine fuel

Available

Vessel pumpout

Available

Oversize / RV lot

Car-only lot

RV dump station

None on site

Overview

Sister Bay Marina on Wisconsin's Door County peninsula holds 48 seasonal slips at the head of Sister Bay — 11 ft channel depth, a 50-ft vessel-length cap, and 2 public boat ramps that serve the Lake Michigan trailerable fishing fleet running smallmouth bass and yellow perch from May through October. The marina's seasonal calendar runs May 1 through October 15 with the fuel dock winterizing by Halloween against the lake-effect snow window. Peninsula State Park 7 miles south on WI-42 (469 campsites across 4 loops, electric on 2 loops, 45-ft rig cap) is the closest state-managed RV basecamp and one of the most-reserved state parks in Wisconsin — book through reservewisconsin.com 11 months ahead for July–August weekends. The marina lot itself is car-only with strict 4-hour day-use limits. Trailer parking moves to the overflow lot on Bay Shore Drive (3 blocks east) at $10 per day.

Where to park the rig

Operator class

City harbor

Marina-lot RV staging

0 dedicated spots · car-only

Closest RV-friendly campground

Peninsula State Park (WI DNR, 469 sites, electric on 2 loops, 45-ft cap, 7 mi south) · no on-site dump

Looking for the rig? Browse Wisconsin RV rentals on PickRV →

Primary sources

Wisconsin rules · last verified 2026-05-10

State rental tax: 7% · not collected by PickRV
Min driver age: 21+ std · 25+ Class A
Gravel roads: Allowed — disclosure required
Generator quiet: 22:00-07:00