Big Dalton Debris Basin, located in Glendora, California, stands as a vital structure for debris control and flood risk reduction along the Big Dalton Wash. Constructed in 1960, this earth dam reaches a height of 59 feet and has a hydraulic height of 42.5 feet, with a storage capacity of 208 acre-feet. With a surface area of 10 acres and draining an area of 7.33 square miles, the basin plays a crucial role in mitigating potential hazards and maintaining the safety of the surrounding areas.

Managed by local government authorities and regulated by the Department of Water Resources (DWR) for dam safety, Big Dalton Debris Basin undergoes regular inspections to ensure its structural integrity and functionality. With a high hazard potential but a satisfactory condition assessment, the basin's last inspection in November 2020 affirmed its operational readiness. While details on emergency action plans and risk management measures are not provided, the basin's strategic location and design contribute significantly to its effectiveness in safeguarding the community from potential disasters.

As a key component in the region's flood control infrastructure, Big Dalton Debris Basin remains a crucial asset for water resource and climate enthusiasts. Its role in debris control and flood risk reduction underscores the importance of proactive dam management and regulatory oversight in protecting vulnerable communities from the impacts of extreme weather events. With a history dating back to the 1960s, the basin continues to serve as a critical defense against potential hazards, highlighting the intersection of engineering innovation and environmental stewardship in ensuring the resilience of water resources in Los Angeles County.