Plat I is a vital flood risk reduction structure located in Sutherlin, Oregon, along the Sutherlin Creek. Built in 1967 by the Natural Resources Conservation Service, this earth dam stands at a height of 30 feet and spans a length of 1236 feet. With a maximum storage capacity of 2760 acre-feet and a normal storage capacity of 870 acre-feet, Plat I plays a crucial role in managing water levels and reducing flood risks in the region.

Managed by the local government and regulated by the Oregon Water Resources Department, Plat I has been deemed to have a high hazard potential but is currently in satisfactory condition. The dam's spillway type is uncontrolled, and it has a maximum discharge capacity of 770 cubic feet per second. With its primary purpose being flood risk reduction, Plat I also serves irrigation needs in the area. It is crucial for water resource and climate enthusiasts to monitor the condition and management of Plat I to ensure its continued effectiveness in protecting the surrounding communities.

Despite its moderate risk assessment level, Plat I remains a key infrastructure for water management in Douglas County, Oregon. With regular inspections and enforcement measures in place, this dam continues to safeguard the region from potential flooding events. Its location, design, and operational capacity make Plat I a valuable asset for water resource management and climate resilience efforts in the area, highlighting the importance of proactive monitoring and maintenance of critical water infrastructure.