Little Wood River, located in Blaine County, Idaho, is a federal irrigation project managed by the Bureau of Reclamation. The primary purpose of the Little Wood River dam, completed in 1941, is to provide irrigation water for agricultural activities in the region. The dam, standing at a height of 129 feet and with a length of 3100 feet, has a storage capacity of 33,300 acre-feet and serves a drainage area of 286 square miles.

The dam's spillway, which is uncontrolled and 250 feet wide, has a maximum discharge capacity of 9,200 cubic feet per second. With a surface area of 590 acres, the dam plays a crucial role in water resource management in the area, ensuring a stable supply of water for irrigation purposes. Despite being classified as having a high hazard potential, the condition assessment of the dam is currently not available, highlighting the need for ongoing monitoring and maintenance to ensure its safety and reliability for the future. Enthusiasts of water resources and climate in the region can appreciate the significance of the Little Wood River dam in sustaining agricultural activities and managing water resources effectively.