Dina Bob Lake, located in Healdsburg, California, is a privately owned dam that serves as a vital water supply source for the surrounding area. Built in 1955, this earth-type dam stands at a height of 33 feet and has a storage capacity of 139 acre-feet. The dam is regulated and inspected by the California Department of Water Resources, ensuring its safety and compliance with state regulations.

This significant dam on Tr Franz Creek plays a crucial role in irrigation and water supply for the region, with a drainage area of 0.35 square miles. Despite its age, the dam's condition assessment in 2017 rated it as satisfactory, with a hazard potential deemed significant. The dam's emergency action plan status and risk assessment measures are not currently available, but regular inspections and maintenance contribute to its overall safety and functionality.

Managed by the Natural Resources Conservation Service, Dina Bob Lake Dam remains a key infrastructure for water resource management in Sonoma County. With its strategic location and essential role in the local water supply system, this dam serves as a testament to the importance of maintaining and regulating critical water infrastructure in the face of changing climate conditions and increasing water demands.