Located in Alta Loma, California, the Demens Creek Debris Basin stands as a crucial structure for debris control and flood risk reduction along the Demens Creek. Constructed in 1980, this earth-type dam boasts a height of 35 feet and a length of 4237 feet, with a storage capacity of 35 acre-feet. The basin covers a surface area of 4 acres and drains a 2.35 square-mile area, making it a vital component in managing water resources in San Bernardino County.

Regulated by the California Department of Water Resources (DWR) under the Safety of Dams program, this debris basin is subject to regular inspection and enforcement to ensure its structural integrity and operational efficiency. With a high hazard potential, the Demens Creek Debris Basin has been assessed as being in satisfactory condition as of September 2017. Emergency action plans are in place, though details on their preparation and adherence to guidelines are not provided, underscoring the importance of ongoing risk assessment and management for this critical infrastructure.

As water resource and climate enthusiasts, the Demens Creek Debris Basin serves as a compelling example of proactive infrastructure design and management to mitigate flood risks and ensure water security in the face of changing climatic conditions. Its continuous monitoring and maintenance underscore the vital role that such structures play in safeguarding communities and ecosystems from the impacts of extreme weather events, highlighting the need for ongoing investment and innovation in water resource management practices.