Moran Slough Dike is a crucial structure located in Richland, Washington, designed and constructed by Harza Engineering in 1964. This earth dam stands at a height of 13 feet and spans 600 feet, serving primarily as a Fish and Wildlife Pond. With a storage capacity of 75 acre-feet and a drainage area of 0.5 square miles, the dam plays a vital role in managing water resources in the region. Despite its low hazard potential, the dam is regulated by the Federal Energy Regulatory Commission and undergoes regular inspections to ensure its structural integrity.

Situated in Grant County, Washington, Moran Slough Dike is subject to state jurisdiction and regulation by the Department of Ecology. The dam's primary purpose of supporting fish and wildlife habitats underscores its importance in maintaining ecological balance in the area. While the dam has not been significantly modified over the years, its moderate risk assessment rating highlights the need for continued monitoring and risk management measures. With a history of state permitting, inspection, and enforcement, the Moran Slough Dike stands as a testament to the collaborative efforts of public utility agencies in safeguarding water resources and climate resilience in the region.

As part of the Seattle District, Moran Slough Dike's location along the Moran Slough river stream contributes to its significant role in water management. With its uncontrolled spillway type and stone core, the dam represents a blend of traditional engineering principles and modern regulatory standards. The presence of emergency action plans and regular inspections further demonstrate the commitment to ensuring the safety and integrity of the structure. For water resource and climate enthusiasts, Moran Slough Dike serves as a prime example of sustainable infrastructure designed to balance conservation efforts with the needs of the local ecosystem.