Dcc - Site 1 is a privately owned dam located in Lyon, Kansas, along the Allen Creek-TR stream. Built in 2001, this earthen dam stands at a height of 20 feet and stretches for 1000 feet, providing a storage capacity of 100.55 acre-feet. The primary purposes of this dam are for fire protection, stock, and small fish pond, serving the local community's needs.

Managed by the Kansas Department of Agriculture, Dcc - Site 1 is regulated, permitted, inspected, and enforced by the state authorities to ensure compliance with safety standards. The dam has a significant hazard potential, although its condition assessment is currently not rated. Despite the lack of a condition assessment, the dam's last inspection was conducted in November 2006, with a scheduled inspection frequency of every 5 years to monitor its safety and integrity.

With a drainage area of 0.27 square miles and a maximum discharge capacity of 645 cubic feet per second, Dcc - Site 1 plays a crucial role in water resource management and flood control in the region. As a site of interest for water resource and climate enthusiasts, this dam provides valuable insights into the infrastructure and management strategies for maintaining water security and resilience in the face of changing environmental conditions.