Be sure to stop at the entrance cabin, even if it appears empty. Our site, #9, was maybe 100 Rey from the Columbia. It. Was, however, roughly half way between the restrooms and the showers which were both about 100 yards away. We were very tired the first night and the noises from the industrial traffic on the river did not prevent us from sleeping. Not so the second night. You can also her the semi’s crossing the bridge . Mosquitoes were present but our device kept them away.