Quarry Pits in Fremont, California, is a locally-owned dam structure situated along the Old Alameda Creek. Built in 1997, this Earth dam stands at 26 feet in height and spans a length of 9150 feet, with a storage capacity of 3360 acre-feet. While primarily serving as a tailings facility, Quarry Pits also plays a role in water supply and recreational activities in the area. The dam is state-regulated by the Department of Water Resources (DWR) and undergoes regular inspections to ensure its safety and functionality.

Despite its satisfactory condition assessment as of September 2017, Quarry Pits poses a high hazard potential due to its location and size. The dam's emergency action plan (EAP) status and risk management measures remain unclear, indicating a potential area for improvement in terms of emergency preparedness. With a notable presence in the Sacramento District, Quarry Pits is a significant water resource structure that requires ongoing monitoring and maintenance to mitigate risks and ensure the safety of surrounding communities.

As a key component of the local government's infrastructure, Quarry Pits serves multiple purposes beyond its initial construction for tailings storage. Its location along the Old Alameda Creek highlights its importance in managing water resources in the region. With a history dating back to 1997, this Earth dam continues to play a vital role in water supply, recreation, and environmental preservation efforts in Alameda County.