Olalla, located in Lincoln, Oregon, is a privately-owned dam on the West Olalla Creek, with a primary purpose classified as 'Other'. Constructed in 1968 by CH2M HILL, this Earth-type dam stands at a height of 83 feet and stretches 350 feet in length. With a storage capacity of 4300 acre-feet and a drainage area of 1.36 square miles, Olalla plays a crucial role in water resource management in the region.

Despite its fair condition assessment, Olalla poses a high hazard potential, making it vital for regular inspections and maintenance. The dam's last inspection in August 2020 revealed its current state, indicating the need for ongoing monitoring to ensure public safety and prevent potential risks associated with its operation. The dam's proximity to Toledo and its impact on water resources underscore the importance of effective regulatory oversight and emergency preparedness measures.

With a maximum discharge of 355 cubic feet per second and a normal storage capacity of 3650 acre-feet, Olalla serves as a key infrastructure for water storage and flood control in the area. As climate change continues to impact water resources and extreme weather events become more frequent, the role of dams like Olalla in managing water supply and mitigating risks is increasingly critical. As such, ongoing attention to the dam's maintenance, risk assessment, and emergency response planning is essential to ensure the safety and resilience of the surrounding community in the face of a changing climate.