About: Green Island, Nebraska

Green Island, 10.5 square miles of land in northwestern Cedar County, Nebraska bordering the Missouri River across from Yankton, SD, was home to Strahmburg a former town on the island. Green Island and Strahmburg have had their names used interchangeably over the years because, in part, the post office in Strahmburg was officially designated as Green Island. Supposedly Green Island acquired its name came the color of its lush vegetation. Though called an island, it was physically connected to Nebraska by a swampy, low-lying area along its southern edge[1]. Both were destroyed by the Great Flood of 1881 on the Missouri. Their history is better understood knowing the braided, meandering, flood-prone history of the Missouri River in that area. Completion of Gavins Point Dam in 1957, 5 miles u