Upper Dike, located in Idaho Falls, Idaho, is a crucial structure with a primary purpose of generating hydroelectric power while also serving recreational purposes. Completed in 1982, this earth dam stands at a height of 12 feet and is 3000 feet in length, with a storage capacity of 1230 acre-feet. Although it is not regulated by the state, it falls under the jurisdiction of the Federal Energy Regulatory Commission, which conducts regular inspections to ensure its safe operation.

Situated on the Snake River, Upper Dike plays a vital role in water resource management in the region, with a normal storage capacity of 800 acre-feet and a surface area of 100 acres. Despite having a low hazard potential, the dam is deemed to have a high risk due to certain factors. The structure has not been modified since its completion and has no spillway or outlet gates. With its location in a high-risk area, there are no detailed risk management measures in place, underscoring the importance of continued monitoring and assessment.

Upper Dike is an essential component of the water infrastructure in Bonneville, Idaho, contributing to both energy production and recreational activities. The dam is owned and operated by the local government and does not require state permitting or inspection. As climate change impacts water resources, structures like Upper Dike will play an increasingly critical role in managing water supply and ensuring the safety and resilience of communities in the face of changing environmental conditions.