Nordland 7 & 18, located in Lyon, Minnesota, is a local government-owned structure designed for roadway retention. This dam is regulated by the Minnesota Department of Natural Resources, with permitting, inspection, and enforcement responsibilities falling under their jurisdiction. The dam stands at 30 feet in height and has a storage capacity of 640 acre-feet, serving a drainage area of 19.3 square miles. Despite being categorized as low hazard potential, the condition assessment of Nordland 7 & 18 remains unrated as of the latest inspection in May 2019.

The dam, constructed in an unlisted/unknown foundation, is of buttress core type and spans a length of 800 feet. Situated in S18 T112N R43W, the structure plays a crucial role in managing water resources in the region, particularly along the South Branch Yellow Medicine River. While specifics such as spillway type and maximum discharge are not provided, the dam's primary purpose and associated structures are also unspecified. The lack of a condition assessment suggests a potential need for further evaluation and risk management measures to ensure the continued safety and functionality of Nordland 7 & 18.

With Congressman Collin Peterson representing the area, Nordland 7 & 18's emergency action plan status, inundation maps, and risk assessment details remain undisclosed. The structure's inspection frequency of 8 years indicates a regular monitoring schedule, and the absence of a designated emergency action plan raises concerns regarding preparedness for potential hazards. As water resource and climate enthusiasts, staying informed about the state of dams like Nordland 7 & 18 is vital for understanding their role in environmental management and ensuring their long-term sustainability.