You'll find Porcupine Mountain State Park Boat Launch on Union Bay in Ontonagon. It's a public boat ramp. If it's full, Big Iron River Mouth Boat Launch in Ontonagon is 3.3 miles away.
| Type | Public boat ramp |
|---|---|
| Address | Ontonagon, MI |
| Water | Union Bay |
| Launch fee | not in our data, check the signs at the launch |
Before driving to Porcupine Mountain State Park Boat Launch, check closures with Michigan Department of Natural Resources.
More in our guide: How to launch a boat from a trailer, plus ramp etiquette.
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Illustration Top pick Bungee dock lines with quick connect, shock absorbing Clip on in seconds while your partner parks the trailer. The bungee keeps the boat off the dock in wakes. View on Amazon 
Illustration Master Lock trailer coupler lock (fits 1-7/8", 2", 2-5/16") Your trailer sits alone in the ramp lot all day. A coupler lock keeps it where you left it. View on Amazon We haven't tested these ourselves; we chose them by size and specs. As an Amazon Associate we earn from qualifying purchases, at no extra cost to you. Check the current price on Amazon.
Illustration Loading the boat
How to winch your boat on in a minute, and the small upgrades that make the drive home safer.
Loading guide Illustration The classic ramp mistake
A spare snap-handle plug in the glove box, and the full launch checklist that keeps the line moving.
Launch checklistThere are no reviews so far. If you launched here, leave a short rating below.
Porcupine Mountain State Park Boat Launch is in Ontonagon, Michigan. There is no street address for Porcupine Mountain State Park Boat Launch in our data, but the map pin marks the launch itself.
Union Bay, in Ontonagon.
We have no fee details for Porcupine Mountain State Park Boat Launch, but our guide to launch fees explains what ramps usually cost.
Paddlers can usually use Porcupine Mountain State Park Boat Launch. Carry the boat to the edge of the ramp or the dock end.
Big Iron River Mouth Boat Launch in Ontonagon (3.3 miles), Ontonagon Municipal Ramp Boat Launch in Ontonagon (15 miles) and Bergland Dock Boat Launch in Wakefield (16 miles).
Boat Ramps Nearby