Ontonagon Marina Boat Ramp

Ontonagon Marina Boat Ramp is a public access point in Ontonagon County, Michigan, providing access to Ontonagon River. It sits within the Mill Creek-Ontonagon River watershed.

Sourced from Michigan Department of Natural Resources . Last checked against the source on July 7, 2026.

Boat ramps on Ontonagon River

Ontonagon Marina Boat Ramp is the only public boat ramp we have on record for Ontonagon River. Smaller creeks and coves sometimes have unofficial or private access points we haven't verified yet — if you know of one nearby, help us add it.

Other boat ramps in Ontonagon County

Ontonagon County tracks 10 public boat ramps in total, spread across several different rivers, creeks and lakes — not just Ontonagon River. Each one below shows which waterbody it's on, so you can tell at a glance whether it actually connects to the same water as Ontonagon Marina Boat Ramp or leads somewhere completely different.

• Ontonagon Marina Ontonagon River less than 0.1 mi away
• Big Iron River Lake Superior 12 mi away
• Union Bay Lake Superior 15 mi away
• Santa Monica Beach Lake Superior 18 mi away
• Sudden Lake Sudden Lake 21 mi away
• Lake Gogebic (North) Lake Gogebic 23 mi away