Park · Oregon
Leashed in the parking lot, at the restrooms and picnic areas, and on or within 100 feet of the Confluence Trail. No commercial dog walking. $5 a car, sunrise to sunset.
Fifteen hundred acres of meadow, woods and shore where the Sandy River meets the Columbia, just east of Portland.
The policy above is the standing rule of the agency that manages this land, as published on its own pages. Official page.
Rules change, and seasonal beach rules change twice a year. Check before a long drive.