2011 Map of Arrowrock Dam

About this map

Arrowrock Dam anchors this high-desert landscape where the Boise River winds through deep canyons and meets its major tributaries. The 2011 survey documents a topography defined by steep drainage systems, including Mores Creek and Deep Creek, and prominent peaks such as Kepros Mountain and Three Point Mountain. The map illustrates the hydrological complexity of the region before the river flows toward the Boise metropolitan area, highlighting the early-stage infrastructure of the Lucky Peak Forest Nursery and the critical access provided by Arrowrock Rd and N Fork Boise River Rd. Gulches like Bend Gulch and Sams Gulch break the terrain, while the course of the river creates a massive reservoir system that transformed this part of Idaho. This study is an essential record of the water management systems and geography that dictate the Boise River basin's character.