2023 Map of Bottleneck Lake

About this map

Craters of the Moon National Preserve occupies the central and southern portions of this landscape, an area defined by its unique volcanic geology and sparse water resources. The terrain is marked by a network of seasonal catchments and small basins, including the namesake Bottleneck Lake and nearby Three Forks Lake in the northwestern quadrant. These features, along with Pronghorn Reservoir and Lower Thumb Reservoir, highlight the importance of water management in this arid Minidoka County environment. The map provides a look at the intersection of protected wilderness and the township and range survey system, following the lines of T4S R24E and T4S R25E through the heart of the preserve. The absence of traditional roads or settlements reflects the area's specialized use as a protected natural landscape.