D'Agostini is a privately owned dam located in Rancho Murieta, California, on the Spanish Creek. Built in 1950, this earth dam stands at a height of 32 feet and serves primarily for water supply purposes, with a storage capacity of 355 acre-feet. The dam has a low hazard potential and is in satisfactory condition, as per the last assessment in September 2017.

Managed by the California Department of Water Resources (DWR) under the Safety of Dams program, D'Agostini undergoes regular inspections and enforcement to ensure its safety and compliance with state regulations. The dam's location in El Dorado County makes it an essential structure for irrigation, recreation, and water supply in the region, supporting a drainage area of 5.2 square miles.

With its strategic position and role in water resource management, D'Agostini contributes to the sustainable development of the area and highlights the importance of infrastructure for climate resilience. As climate change impacts water availability and quality, dams like D'Agostini play a crucial role in securing water resources for communities and ecosystems, underscoring the need for continued monitoring and maintenance to ensure their long-term functionality and safety.