1990 Map of Lewis Creek

About this map

Malheur National Forest dominates the landscape of this Grant County region, where the terrain is defined by rugged ridges and deep drainage systems. The South Fork John Day River winds through the southern portion of the map, carving a significant valley floor between Blackhorse Butte and Gilbert Ridge. Settlement patterns are distinctly ranch-based, with established outposts like Officer Ranch, Bush Ranch, and Bradley Ranch situated near reliable water sources like Lewis Creek. The drainage network is complex, featuring named features such as Wickiser Slough and Greenspring Draw, which suggest a landscape where water management was essential for cattle operations. Higher elevations are marked by Buck Mountain and Sand Mountain, offering a clear view of the transition from timbered forest lands to the more open canyon country characteristic of eastern Oregon.