Matilija is a significant dam located in Ventura, California, along the Matilija Creek. Completed in 1949, this arch dam stands at a height of 163 feet and serves multiple purposes, including flood risk reduction, irrigation, and water supply. With a storage capacity of 1800 acre-feet and a drainage area of 55 square miles, Matilija plays a crucial role in managing water resources in the region.

Despite its importance, Matilija poses a high hazard potential with a poor condition assessment as of September 2017. The dam is owned and regulated by local government authorities and is subject to regular inspections, permitting, and enforcement by the California Department of Water Resources. The dam's last inspection was conducted in November 2021, highlighting the ongoing efforts to monitor and maintain its structural integrity.

Located in Ojala, Matilija is a key infrastructure for flood risk reduction in the area, serving as a critical line of defense against potential disasters. With a designer name unspecified, the dam's primary purpose underscores the importance of safeguarding communities and resources from the impacts of extreme weather events. As water resource and climate enthusiasts, it is essential to recognize the vital role that dams like Matilija play in ensuring water security and resilience in the face of changing environmental conditions.