Deer Creek, located in Napa, California, is a privately owned earth dam completed in 1980 for the primary purpose of water supply. With a height of 40 feet and a storage capacity of 103 acre-feet, Deer Creek plays a crucial role in providing irrigation and water supply to the surrounding area. The dam is regulated and inspected by the California Department of Water Resources (DWR), ensuring its safety and compliance with state regulations.

Despite being classified as having a low hazard potential, Deer Creek's condition was assessed as satisfactory during its last inspection in September 2017. The dam spans 1085 feet in length and covers a surface area of 5.7 acres, serving as a vital resource for water management in the region. With a drainage area of 0.56 square miles, Deer Creek helps to mitigate water scarcity and supports agricultural activities in the area.

The dam has not undergone any modifications in recent years and does not fall under the jurisdiction of the US Army Corps of Engineers. Its emergency action plan status and risk assessment measures are currently unspecified, but its consistent compliance with state regulations and satisfactory condition make Deer Creek a valuable asset in water resource management and climate resilience efforts in Napa, California.