2017 Map of Castle Rock

About this map

Little Malheur River and the North Fork Malheur River converge in this high-desert landscape, where three Oregon counties—Grant, Malheur, and Harney—meet. The terrain is defined by prominent volcanic landmarks like Black Butte and the namesake Castle Rock, creating a complex network of drainages and springs. The map documents an area where water management is critical to the landscape, evidenced by the Horse Flat Reservoir and numerous named water sources such as Whisky Gulch Springs and Mouse Lake. Settlement is sparse, represented by fundamental infrastructure including Castle Rock Rd and Lost Creek Rd. This survey captures the remote character of the High Desert during the late 2010s, illustrating how geographical features like Jerry Canyon and Horse Flat dictate the flow of seasonal creeks like Lost Cr and Hunter Cr.