Deer Flat East Dike, located in Canyon, Idaho, is a crucial water resource structure managed by the Bureau of Reclamation for irrigation purposes. Completed in 1911, this earth dam stands at 18 feet high and spans a length of 3806 feet, holding a maximum storage capacity of 159,365 acre-feet. Situated on the Boise River OS, the dam plays a key role in providing water for agricultural activities in the region.

With a low hazard potential and a high risk assessment rating of 2, Deer Flat East Dike is regularly inspected and regulated by the Bureau of Reclamation to ensure its structural integrity and operational efficiency. Despite having no spillway, the dam's design features an arch core supported by a rock foundation, contributing to its stability and reliability. Additionally, the dam's emergency action plan was last revised in July 2017, emphasizing the importance of preparedness and risk management in the event of a water-related emergency.

As a significant water management infrastructure in Idaho, Deer Flat East Dike serves as a critical component of the region's water supply system, demonstrating the importance of effective monitoring and maintenance practices to safeguard against potential risks and ensure sustainable water resource management for future generations.