2020 Map of Long Valley

About this map

Willow Creek Lava Field dominates the southern landscape of this Idaho quadrangle, illustrating the complex volcanic history of the region. This high-altitude drainage system is centered around Long Valley Cr, where seasonal water management is evident through features like Robison Reservoir and Parleys Reservoir. The terrain is marked by distinctive geological formations, from the prominent Three Buttes and Sheep Mtn to the curiously named Mollies Nipple on the eastern edge. For those studying local land use, the map traces the route of Long Valley Rd as it skirts around The Basin and The Saddle, providing access to numerous water sources including Dynamite Spring and Gold Spring. The presence of the Pole Bridge in the northwest corner highlights early infrastructure used to navigate this network of mountain creeks and basins.