Pinheiro, located in Sonoma County, California, is a privately owned dam that serves multiple purposes, including flood risk reduction and water supply. Built in 1967, this earth dam stands at a height of 26 feet and has a storage capacity of 83 acre-feet. Situated along the Tr Petaluma River, Pinheiro plays a critical role in managing water resources in the region.

Managed by the Natural Resources Conservation Service, Pinheiro is regulated by the California Department of Water Resources and undergoes regular inspections to ensure its structural integrity and safety. With a significant hazard potential due to its location and purpose, the dam has been assessed as being in satisfactory condition as of September 2017. In the event of an emergency, the dam has protocols in place, although details on emergency action plans and risk management measures are currently unavailable.

With its strategic location in Petaluma and its vital role in flood risk reduction, Pinheiro stands as a testament to the importance of proper water resource management and infrastructure maintenance in the face of changing climate patterns. As water resource and climate enthusiasts, understanding the complexities and challenges associated with structures like Pinheiro is crucial in safeguarding our communities and environment for the future.