Canon Watershed Detention C-4, located in Fremont County, Colorado, near Canon City, plays a crucial role in flood risk reduction along the Arkansas River. This earth dam, completed in 1972, stands at 68 feet tall and spans 496 feet in length, providing a storage capacity of 418 acre-feet. Managed by the Natural Resources Conservation Service and regulated by the Colorado Department of Water Resources, this structure is inspected every three years to ensure its satisfactory condition and high hazard potential.

With a spillway width of 32 feet and uncontrolled spillway type, Canon Watershed Detention C-4 is designed to manage a maximum discharge of 2065 cubic feet per second. Despite its moderate risk assessment, the dam's emergency action plan has been last revised in 2019, highlighting the importance of preparedness in the event of a potential breach. As a critical infrastructure in flood-prone areas, this dam serves as a testament to the collaborative efforts between local government agencies and federal regulators in safeguarding communities against natural disasters.