Sanborn is a privately owned dam located in Longmont, Colorado, along the St. Vrain Creek. Built in 1890 for irrigation purposes, this earth dam stands at 16 feet tall and spans 2300 feet in length. With a storage capacity of 284 acre-feet and a normal storage of 214 acre-feet, Sanborn plays a crucial role in managing water resources in the area.

Despite being classified as having low hazard potential and a satisfactory condition assessment, Sanborn underwent its last inspection in September 2013. With a moderate risk assessment rating, there is a need for continued monitoring and potential risk management measures to ensure the dam's safety and functionality. The dam features an uncontrolled spillway type with a width of 30 feet, allowing for a maximum discharge of 640 cubic feet per second.

Sanborn serves as a vital component of the water infrastructure in Weld County, Colorado, providing irrigation water for agricultural purposes. With its historical significance and ongoing role in water resource management, Sanborn showcases the intersection of tradition, engineering, and climate resilience in the region. As water resource and climate enthusiasts, understanding the intricacies of dams like Sanborn can offer valuable insights into sustainable water management practices and the importance of infrastructure maintenance in the face of changing environmental conditions.