1968 Map of Steamboat Rock SE

About this map

Banks Lake dominates the northwest corner of this landscape, its waters filling the Upper Grand Coulee against the massive profile of Steamboat Rock. The 1968 survey data, including underwater contours established by the Bureau of Reclamation in the late 1940s, reveals the complex topography of the Devils Punch Bowl and the steep walls of Northrup Canyon. While the coulee floor is defined by water and dramatic basalt formations like Gibraltar Rock, the plateau to the south and east is carved by a grid of rural roads, including Road 50 NE and Road 48 NE. This upland area is marked by signs of early settlement and livestock management, with the St Johns Cem and Schrock Cem serving as vital points of reference for local family history. Small ephemeral water bodies like Coffee Lake and Henning Lakes dot the high ground, illustrating the drainage patterns that feed into Devils Creek and Rusho Creek.