Howard A. Hanson Dam, located in Auburn, Washington, is a rockfill dam primarily designed for flood risk reduction along the Green River. Completed in 1962 by the US Army Corps of Engineers (USACE), the dam has a hydraulic height of 220 feet and a structural height of 235 feet, with a maximum storage capacity of 136,700 acre-feet. While the dam plays a crucial role in reducing flood risks, extreme rainfall events could still necessitate controlled releases through the outlet tunnel or spillway to prevent overtopping and potential failure.

USACE has implemented numerous risk management measures to ensure the dam's safety and reduce risks to life safety and property. This includes regular inspections, monitoring instrumentation, and maintenance activities to address any potential concerns. The agency also collaborates with local emergency managers to update the Emergency Action Plan annually, conducts emergency exercises, and hosts stakeholder meetings to keep the community informed. Despite the low likelihood of dam failure scenarios, USACE remains committed to safeguarding the dam and mitigating potential risks to downstream communities in Auburn, Kent, and beyond.

Overall, Howard A. Hanson Dam remains a vital infrastructure for flood risk reduction in the region, with USACE's ongoing efforts to maintain the dam's integrity and ensure its resilience in the face of extreme weather events. Through continuous monitoring, maintenance, and collaboration with local authorities, the dam serves as a critical asset in protecting communities from potential flooding disasters.