The Calamus River meanders across this northern Nebraska landscape, creating a complex network of wetlands and small water bodies that dominate the local topography. This 2011 survey of the Brown County region illustrates the sparsely populated, high-plains character of the area, where the primary infrastructure consists of a few scattered local roads. The map captures the hydrological patterns of the river valley, showing numerous small, unnamed ponds and seasonal catchments that are characteristic of the Sandhills region. These water features represent the primary geographical interest in an otherwise open and pastoral landscape, providing a clear record of the area's natural drainage before more recent land use changes.
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This is the sole edition of this map. No revisions or reprints were ever made.
1949 · Koshopah
USGS Topo · 1:62,500
1951 · Moon Lake
USGS Topo · 1:62,500
1951 · Koshopah
USGS Topo · 1:62,500
1955 · O'Neill
USGS Topo · 1:250,000
1957 · Valentine
USGS Topo · 1:250,000
1959 · Valentine
USGS Topo · 1:250,000
1959 · O'Neill
USGS Topo · 1:250,000
1969 · O'Neill
USGS Topo · 1:250,000
1982 · Raven
USGS Topo · 1:24,000
1982 · Goldman Lake SE
USGS Topo · 1:24,000