William O'Brien State Park Boat Ramp
William O'Brien State Park Boat Ramp is a public access point in Washington County, Minnesota, providing access to St. Croix River. It sits within the McLeods Slough-St. Croix River watershed.
Sourced from Minnesota Department of Natural Resources . Last checked against the source on July 7, 2026.
Boat ramps on St. Croix River
We track 9 public boat ramps on St. Croix River, including this one. If you're planning to spend your time on a different stretch of the water, one of the launch points below may put you closer to where you're actually headed than William O'Brien State Park Boat Ramp does — they're listed here in order of distance from this ramp.
- Otisville - Log House 2 mi away
- Osceola Landing 7.6 mi away
- St. Croix River Boomsite 9.7 mi away
- Wolf Marina 10 mi away
- Ole Sawmill Marina 10 mi away
- Franconia Landing 11 mi away
- Interstate State Park 13 mi away
- Bayport - Lakeside Park 14 mi away
Other boat ramps in Washington County
Washington County tracks 29 public boat ramps in total, spread across several different rivers, creeks and lakes — not just St. Croix 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 William O'Brien State Park Boat Ramp or leads somewhere completely different.
- William O'Brien State Park St. Croix River less than 0.1 mi away
- Otisville - Log House St. Croix River 2 mi away
- Goose Lake Goose Lake 4.4 mi away
- Square Lake County Park Square Lake 4.8 mi away
- Big Marine Lake (South) Big Marine Lake 5 mi away
- Big Marine Lake (North) Big Marine Lake 5.4 mi away