Great River Houseboats at the Alma Marina is located on Pool #4 of the Upper Mississippi River. You have 57 miles of river to navigate and explore. Enjoy beautiful sand beaches and scenic bluff countryside with no locks and dams to go through. Great River Houseboats offers 5 styles of houseboats ranging from a 40' Wanderer, sleeping 6, to a 59' Delite, sleeping 12, equipped with a full kitchen plus an outside gas grill, as well as an upper canopied flybridge with a wetbar including an icemaker and refrigerator. And the whole family enjoys the houseboat’s waterslide! Great River Houseboats also offers several pontoons and fishing boats.