2011 Map of Shamrock Gulch

About this map

Shamrock Gulch and the surrounding high-desert canyons of eastern Idaho define this landscape in the early twenty-first century. The area is marked by a complex network of drainage systems, including Nicholia Canyon, Black Horse Canyon, and Gallagher Canyon, which carve through the terrain toward the southern edge of the quadrangle. Water sources are critical landmarks here, with several named springs such as Boulder Spring, Shamrock Spring, and the paired Upper Crystal Spring and Lower Crystal Spring providing vital points of reference in an otherwise arid environment.