Travelers are voting Salmon River, Sandy River and South Fork Clackamas River as the best of 23 rivers in Multnomah County. There are 23 rivers near Lafayette a city just 31 km from Multnomah County and 22 rivers near Yamhill which is 31 km distant. The most popular of these are Columbia Slough near Lafayette and Rogue River South Yamhill in Yamhill. You can find 154 rivers in Oregon and 3913 rivers in the country of United States. Our members favorite in Oregon is Coast Fork Willamette River and Mississippi River is the top pick in United States. Want more? Check out our map of rivers in Multnomah County.