In 1870, immigrants from the Kaszuby region in northwestern Poland and Germany took up residence on a peninsula between the Milwaukee and Kinnickinnic rivers, finding it a suitable substitute for the Hel Peninsula on the Baltic coast. After digging a channel to create an isolated island, they lived for many years on this small patch of land, subsisting on the fishing industry which was not only a food source, but also made up their entire economy. By 1920, however, the city had begun to commandeer Jones Island for use in the development of a more lucrative and industrialized harbor. Considered “squatters,” the Kaszubian and German immigrants were forced to move from the area, their presence and impact on the city largely forgotten.