Mill Pond Dike, located in Metaline Falls, Washington, serves as a crucial infrastructure for hydroelectric power generation and recreational activities. Built in 1922, this earth dam stands at a height of 8 feet and stretches over 850 feet in length, with a storage capacity of 1,430 acre-feet. Sullivan Creek is the primary water source for this dam, which has a drainage area of 125 square miles and a maximum discharge of 4,000 cubic feet per second.

Managed by the Federal Energy Regulatory Commission, Mill Pond Dike is considered to have a high hazard potential due to its location and structure. Despite its age, the dam has not undergone recent condition assessments, but emergency action plans have been prepared and revised to ensure public safety in the event of a breach. The surrounding area spans 65 acres and offers recreational opportunities for visitors, making it a valuable asset for both water resource management and community enjoyment.

With a risk assessment rating of 2, indicating a high risk level, maintaining the integrity of Mill Pond Dike is paramount to prevent potential hazards and ensure the safety of downstream communities. Regular inspections and risk management measures are essential to mitigate any potential threats and uphold the structural stability of this vital infrastructure. As climate change continues to impact water resources, sustainable management practices will be crucial in safeguarding Mill Pond Dike and its surrounding environment for future generations.