NIAGARA RAFTING FIELD GUIDE
Class IV Menace: Run Piers Gorge and a 10‑Foot Drop on the Menominee
A guided, Class IV whitewater run out of Niagara, Wisconsin that threads 200‑foot cliffs and ends with a 10‑foot waterfall—this guide explains what to expect and how to prepare.
Class IV Menace: Run Piers Gorge and a 10‑Foot Drop on the Menominee.
Adventure brief
Class IV Menace: Run Piers Gorge and a 10‑Foot Drop on the Menominee
Kosir’s Rapid Rafts runs a guided Class IV whitewater trip on the Menominee River out of Niagara, Wisconsin, where paddlers move from a quiet, scenic opening past 200‑foot cliffs into escalating rapids — including Sand Portage Rapid — and culminate by running a 10‑foot waterfall in legendary Piers Gorge (you get to raft Piers Gorge twice).
Experience the adrenaline rush of navigating Class IV rapids on the Menominee River with Kosir's Rapid Rafts. This private guided rafting trip boasts heart-pounding excitement as you conquer the river’s challenging twists, including the famous 10-foot waterfall in Piers Gorge. With expert guides leading the way, you’ll safely raft through stunning natural scenery while enjoying two passes through the thrilling Piers Gorge. This adventure combines the raw power of whitewater rafting with breathtaking views of Wisconsin’s wilderness near Niagara. Whether you’re an experienced rafter or seeking your next big challenge, the Menominee River delivers unforgettable moments and an immersive outdoor experience. The combination of rugged rapids, pristine forest surroundings, and expert guidance makes this an ideal adventure for thrill seekers looking for a standout river expedition in the Upper Midwest.
Route Schematic
Route Schematic
Key stops and sequence along the Menominee River run.
Menominee River Outpost — Check‑In
Meet at Kosir’s smaller outpost in Niagara; check‑in is one full hour before the scheduled trip and the operator provides transportation from the outpost to the river and back.
Scenic Opening Past Cliffs
The trip starts quietly in the scenic surroundings of Niagara and careens past towering 200‑foot cliffs before the river tightens.
Sand Portage Rapid
The river increases in intensity through Sand Portage Rapid, a prelude to the gorge section.
Piers Gorge — Waterfall Finale (Twice)
The run culminates with a 10‑foot waterfall in Piers Gorge; the trip includes the chance to raft through Piers Gorge twice.
This is a Class IV, high‑volume whitewater run suited to adventurous rafters; trips are run under guide supervision and actual duration and flow are dependent on water levels.
What the day feels like
What the Run Feels Like
Expect a guided, compact outing that moves from a deceptively calm opening through chunkier whitewater as the river narrows and accelerates; under professional supervision in four‑ to twelve‑person, self‑bailing rafts you’ll punch through Sand Portage Rapid and then tackle Piers Gorge — twice — for a finale that includes a 10‑foot drop.
THE LANDSCAPE
Cliffs, Forest and a Quiet Opening
The trip launches in the scenic surroundings of Niagara and drops into a stretch that passes sheer, 200‑foot high cliffs before the river builds toward its main rapids.
THE DROP
Piers Gorge’s 10‑Foot Waterfall
The run culminates in the legendary Piers Gorge with a 10‑foot waterfall — a marquee Class IV feature that defines the trip’s adrenaline moments.
THE RAPIDS
High‑Volume, Western‑Style Whitewater
The Menominee is a large‑volume river with rapids and hydraulics comparable to western rivers, with increasing intensity through sections like Sand Portage Rapid and the opportunity to run Piers Gorge twice.
Suitability
Who it's for
Who this trip suits—and who should call ahead.
Practical planner
Details to review before reserving
Kosir’s supplies helmets, life jackets and paddles; trips run in self‑bailing rafts.
Transportation between the Menominee River Outpost and the river is provided as part of the trip.
Review cancellation policies before reserving.
Frequently asked questions
Planning Your Outing
When is the rafting season?
Trips run from Memorial Day weekend through October.
How long is the trip?
Expect about 2 to 2.5 hours on the water; total duration depends on water levels.
What are the age limits and pricing?
Standard pricing applies to persons ages 12 and older ($60.00); the operator asks that you call if you have younger participants.
What times do trips run?
Trips are scheduled at 10:00 AM and 3:00 PM on Saturdays and Sundays, and at 3:00 PM during weekday afternoons.
When should I arrive?
Check‑in at the Menominee River Outpost is one full hour before your scheduled trip time.
Is safety gear provided?
Yes—helmets, life jackets and paddles are provided as part of the guided trip.
How this guide was prepared
This field guide is synthesized using verified supplier specifications, route descriptions, and destination data. Some booking links may generate affiliate revenue for ADV Guides.
- Verified: 2026-08-13T02:20:06.630Z
Some booking links may generate revenue for ADV Guides or The Adventure Collective.
Availability, pricing, schedules and operating details can change.
Trip details and contextual sources were reviewed by ADV Guides Editorial.