Patterson Ferry Boat Ramp is a shallow gravel launch located on the Washington side of Lake Umatilla at mile 278, providing access to a scenic stretch of river with excellent wildlife viewing opportunities including waterfowl and other birds congregating at nearby Paterson Slough.

The ramp sits at the end of a road that once led to a historic ferry landing, making it a modest but functional access point for boaters exploring this less-developed section of the Columbia River.