Categories Katy trip Grand Coullee Post author By rusty Post date July 3, 2010 No Comments on Grand Coullee After Multnomah Falls, we detoured by the Grand Coulee Dam. It was impressive. We ended up not going in because there was a huge wait on 4th of July weekend. ← Multnomah Falls → Missoula Leave a Reply Cancel replyYou must be logged in to post a comment.