Arrowrock Dam, located in Boise, Idaho, is a federally owned structure built in 1915 by the Bureau of Reclamation to primarily reduce flood risks in the area. This concrete dam stands at a height of 350 feet and has a hydraulic height of 257 feet, with a storage capacity of 283,700 acre-feet and a maximum discharge rate of 16,080 cubic feet per second. The dam also serves purposes such as irrigation, recreation, and water supply, making it a vital resource for the region.

Managed by the Bureau of Reclamation, Arrowrock Dam is regulated by the Idaho Department of Water Resources and undergoes regular inspections to ensure its structural integrity. With a high hazard potential, the dam's emergency action plan is in place, and risk assessments have determined it to have a very high risk ranking. The dam's controlled spillway, drum outlet gates, and associated structures contribute to its efficient operation and management, while its location on the Boise River and Snake River provides essential water resources for the surrounding communities.

Arrowrock Dam's historical significance, architectural design, and impact on water management in the region make it a fascinating structure for water resource and climate enthusiasts. Its role in flood risk reduction, irrigation, and recreational activities highlights the importance of sustainable water infrastructure in supporting the needs of both human populations and natural ecosystems. As a key component of the Bureau of Reclamation's operations, Arrowrock Dam exemplifies the agency's commitment to managing water resources effectively and ensuring the safety and well-being of the local communities it serves.