Blue Creek Upper is a privately owned dam located in Fremont, Idaho, with a rich history dating back to its completion in 1920. This earth dam stands at a height of 18.4 feet and has a hydraulic height of 14.3 feet, serving the crucial function of regulating the flow of Blue Creek and Sand Creek. With a storage capacity of 67 acre-feet and a surface area of 12 acres, the dam plays a vital role in managing water resources in the area.

Despite its age, Blue Creek Upper is deemed to have a low hazard potential and is assessed to be in fair condition as of the last inspection in 2016. The dam features an uncontrolled spillway with a width of 10 feet, and although it has not undergone significant modifications over the years, it continues to meet state regulatory standards for inspection, enforcement, and permitting. Its moderate risk assessment rating highlights the importance of ongoing monitoring and potential risk management measures to ensure the safety and effectiveness of this essential water resource infrastructure in Idaho.

Overall, Blue Creek Upper stands as a testament to early 20th-century engineering and serves as a reminder of the crucial role dams play in water resource management and climate resilience. With its historical significance, operational functionality, and regulatory compliance, this dam remains a key component of the water infrastructure in Fremont County, Idaho, contributing to flood control, irrigation, and environmental conservation efforts in the region.