Island City Harbor is nestled in the bluffs of the Mighty Mississippi River. Coddiwomple to Sabula, Iowa and enjoy the beautiful drift less area. We are a 140 slip marina located on the upper Mississippi River on Iowa's only island city. We can accommodate boats up to 80 ft, with channel depths averaging 6 ft. We have a harbor store filled with a variety of nautical home decor, handmade jewelry, recycled hand bags, bait and tackle. We provide bathhouse and laundry facilities for our boaters. We have a gas dock and full time Marine technician and a friendly staff. We love new visitors so come and coddiwomple to our Island City. We invite you to have fun and stay in one of our rental houseboats!