Rock Canyon E.C. #2 is a privately owned earth dam located in Arapahoe County, Colorado, near the city of Byers. This structure was completed in 1973 and serves the primary purpose of flood risk reduction along the Bijou Creek-TR. With a height of 20 feet and a hydraulic height of 22 feet, the dam has a maximum storage capacity of 50 acre-feet and a normal storage level of 29 acre-feet. The dam spans 460 feet in length and has a spillway width of 70 feet.

Despite being classified as having a low hazard potential, the condition assessment of Rock Canyon E.C. #2 in 2020 was rated as fair. Regular inspections are conducted every 3 years to ensure the structure's safety and functionality. The dam is equipped with an uncontrolled spillway and has a moderate risk assessment rating. While no emergency action plan (EAP) information is provided, the dam is regulated by the Colorado Division of Water Resources and meets state permitting, inspection, and enforcement requirements. Overall, Rock Canyon E.C. #2 plays a crucial role in managing flood risk in the region while facing moderate risk management challenges.