Rainier City Reservoir, located in Columbia County, Oregon, is a vital water supply infrastructure managed by the local government. Constructed in 1954, the reservoir stands at a height of 25 feet and has a storage capacity of 14 acre-feet. Situated along Fox Creek, the dam serves as a crucial resource for Rainier City and the surrounding community. With a hydraulic height of 22 feet and a maximum discharge of 0, the reservoir plays a key role in ensuring water security in the region.

Owned and regulated by the Oregon Water Resources Department, Rainier City Reservoir has a significant hazard potential and undergoes inspections every three years. The dam, designed by CLARK & GROFF, features a timber crib structure with needle outlet gates. Despite being in operation for several decades, the condition assessment of the dam is currently not rated. As a critical component of the water supply infrastructure in the area, the reservoir's upkeep and maintenance are essential to safeguarding against potential risks and ensuring the continuous availability of water resources for the community.

In the event of emergencies, the reservoir's Emergency Action Plan (EAP) status and risk assessment measures are not currently available. However, with its strategic location and essential role in water supply, Rainier City Reservoir remains a key asset for managing water resources in the region. As water resource and climate enthusiasts, understanding the infrastructure and management of such reservoirs is crucial for sustainable water management practices and resilience against climate impacts.