2014 Map of Irwin SE

About this map

The Niobrara River carves a deeply sinuous path through this portion of Nebraska's sandhills, defining the southern landscape with its tight, repetitive meanders. To the west, the relatively level expanse of the Lavaca Flats provides a contrast to the complex topography of the surrounding dunes. This 2014 survey documents the hydrography of the region, where Leander Creek feeds into the marshy waters of Coffey Lake before continuing south toward the river. Transportation in this sparse region is anchored by Us 20, which cuts across the northwestern corner, serving as the primary corridor through these expansive grasslands. The map illustrates the characteristic drainage patterns and landforms of the high plains, showing a landscape shaped by water and wind where natural features far outnumber human developments.