2018 Map of Bobs Flat

About this map

Humboldt River waters flow through the southwestern portion of this Eureka County landscape, defining the character of the Whirlwind Valley. The presence of the Merchant Canal and Anderson Canal reflects the long-standing management of water in this arid basin, likely supporting livestock or irrigation efforts in an area dominated by wide alluvial expanses. To the north and east, the terrain transitions into the broad basins of Boulder Flat and Bobs Flat, framed by drainage features like Mack Cr and Bob Cr. The modern path of Interstate 80 and State Route 306 cut through the heart of these flats, following natural corridors used by travelers since the mid-19th century. This topography reveals the classic Basin and Range structure, where flat valley floors meet the sharp rise of surrounding uplands, punctuated by the seasonal runoff path of Long Draw.