1904 Map of Logan Creek

About this map

The boundary between Glenn Co and Colusa Co cuts across the southern portion of this landscape, established through a 1904 survey by the US Geological Survey. This interior valley environment is defined by the drainage of Logan Creek and its tributary North Fork, which flow eastward from the steep foothill terrain into the flatter plains. The map records the precise elevation and topography of this transition zone, where the steep, winding drainage of Hunters Creek meets the gentler grades of the valley floor. Benchmarks like B M 170 and B M 168 anchor the surveying work of Geo. R. Davis and W. N. Vance, providing a scientific snapshot of the region's physical geography before mid-century changes in land use and infrastructure altered the rural character of these two California counties.