2010 Map of Alloway Creek

About this map

The northern reaches of Marshall County are defined by the winding course of Rock Creek, which meanders through a landscape shaped by rural agricultural development. This 2010 survey by the U.S. Geological Survey illustrates the enduring section-line grid that organizes the terrain into a network of farmsteads and open fields. The creek itself provides the primary natural relief in an otherwise structured landscape of straight roads and irrigation patterns, serving as a critical drainage feature for the surrounding prairie. While the area is largely characterized by active land use, the map serves as a contemporary record of the natural hydrology that has influenced local settlement patterns since the early days of Iowa's statehood.