2016 Map of Green Valley

About this map

The Green Valley settlement sits at the eastern edge of this agricultural landscape in Lyon County, where the plains are defined by a sophisticated water management network. Man-made waterways like County Ditch Number Fifteen and County Ditch Number Nineteen cut through the sections, augmenting the natural drainage of the Yellow Medicine River and the Redwood River. This 2016 survey illustrates the persistent township-and-range grid, with a dense web of rural roads including Co Hwy 8 and Co Rd 78 providing access to the vast acreage. The presence of Threemile Cr and various unnamed wetlands suggests the complexity of maintaining fertile farmland in this prairie region, where drainage infrastructure is as central to the local geography as the natural river systems themselves.