Sabula, Iowa, the Island City
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.
The town was platted and recorded in Dubuque in 1837 by Wood, Brown and Swan after buying out Dorman's interest.
This was a site for Indian encampment and it was also known by the French as Prairie La Pierre Carrollport and Charleston were the first names for the platted community.
In 1846 a man named William Hubbel is reported to suggest a name that would not be a duplicate of any other town - Sabula, which was said to be the latin for sand.
The town is also the Eastern most community in Iowa.
The bridge over the Mississippi River from Sabula to Savanna was the subject of this February 2013 AP report: