Sabula, Iowa, the Island City
  This is an amazing location that I did not know about until I went by on my boat.  Sabula is truly an island city and the only one on the river.  Across the river is Savanna, IL.    Sabula is 1/4 miles wide and 1 mile long and connected by causeways to Iowa and Illinois.     Legend has it that Isaac Dorman crossed the river on a log and decided to settle here.  Must have been quite a log and a strange wind/current that day.  Sabula was the site of a button factory - clam shell buttons.  Strangely it was also the site of hog butchering.     Originally the island was surrounded by marshland, but when Lock and Dam #13 was put in the pool flooded the marsh and made the town in to a water surrounded island.               The Geneology Trails site says:  Commercial fishing is engaged in to a considerable extent with about 120,000 pounds of rough fish - carp, buffalo and perch - and about 25,000 pounds of dressed catfish being shipped annually.   ...