Devil Canyon Second Afterbay, located in San Bernardino, California, is a state-owned water resource structure that serves multiple purposes, including hydroelectric power generation and water supply. Completed in 1995, this earth dam stands at a height of 40 feet and has a structural height of 88 feet. With a maximum storage capacity of 960 acre-feet and a normal storage capacity of 850 acre-feet, this afterbay plays a crucial role in managing water resources in the region.

Situated on Devil Canyon Creek, this afterbay has a low hazard potential and is regulated by the California Department of Water Resources (DWR) and the Federal Energy Regulatory Commission. It features an uncontrolled spillway and has a maximum discharge capacity of 2960 cubic feet per second. Despite its moderate risk assessment rating, the condition assessment for Devil Canyon Second Afterbay is currently not available, indicating a need for further evaluation and monitoring.

With its strategic location and importance in water management, Devil Canyon Second Afterbay is a key asset in the water infrastructure of San Bernardino County. As a state-regulated structure, it undergoes regular inspections and enforcement to ensure its safety and functionality. Water resource and climate enthusiasts will find Devil Canyon Second Afterbay to be an intriguing and essential component of the region's water supply system, showcasing the intersection of engineering, environmental stewardship, and regulatory oversight in sustaining water resources for the community.