Mallacomes is a privately owned dam in Healdsburg, California, built in 1951 for the primary purpose of water supply, specifically for irrigation and domestic use. Located on Foote Creek, this earth dam stands at a height of 57 feet with a hydraulic height of 52 feet, providing a storage capacity of 225 acre-feet. The dam spans 940 feet in length and covers a surface area of 12 acres, serving as a vital water resource in Sonoma County.

Managed by the California Department of Water Resources, Mallacomes is regulated, permitted, inspected, and enforced to ensure its structural integrity and safety. The dam has a high hazard potential, although its condition assessment in 2017 deemed it satisfactory. This critical infrastructure undergoes regular inspections, with the last one conducted in August 2020, highlighting a commitment to maintaining its functionality and safety standards.

With its proximity to residential areas and agricultural land, Mallacomes plays a crucial role in water management and supply for the local community. As a vital component of the water infrastructure in Sonoma County, this dam contributes to the sustainable use of water resources and climate resilience in the region, emphasizing the importance of responsible dam operation and maintenance in safeguarding water security for future generations.