Olson is a privately owned water resource structure located in Elmore, Idaho, designed by the USDA NRCS for irrigation purposes. Completed in 1981, this earth dam stands at a height of 23.6 feet and has a hydraulic height of 18.6 feet. The dam has a storage capacity of 119 acre-feet and is situated on an unnamed stream connected to Camas Creek, with a drainage area of 2.7 square miles.

Despite its low hazard potential and fair condition assessment, Olson has a moderate risk assessment rating. The dam has a spillway width of 30 feet and a maximum discharge capacity of 280 cubic feet per second. While the structure has not been modified in recent years, it is regularly inspected by the Idaho Department of Water Resources, with the last assessment conducted in October 2018. With its stone core and rock and soil foundations, Olson plays a crucial role in water management and irrigation in the region.

Water resource and climate enthusiasts will find Olson to be an intriguing example of a privately owned irrigation dam in Idaho. Its location on a tributary of Camas Creek, its storage capacity of 119 acre-feet, and its low hazard potential make it a notable structure in the region. The dam's design by the USDA NRCS and its regular inspections by the Idaho Department of Water Resources ensure its continued functionality and safety. Overall, Olson serves as a vital component of the local water infrastructure, contributing to both agricultural irrigation and water resource management in the area.