Floodwater Retention B-6, located in Larimer, Colorado, is a privately owned earth dam designed by the USDA NRCS in 1977 for flood risk reduction along Sand Creek. Standing at a height of 110 feet with a hydraulic height of 75 feet, this dam serves a critical purpose of storing floodwater to protect surrounding areas from potential inundation. With a storage capacity of 1937 acre-feet and a drainage area of 15 square miles, Floodwater Retention B-6 plays a vital role in managing water flow during periods of heavy rainfall.

Despite its significant hazard potential, Floodwater Retention B-6 has been assessed as being in satisfactory condition as of October 2019. Regular inspections are conducted every three years to ensure the dam's structural integrity and flood risk reduction capabilities are maintained. The dam's emergency action plan is up to date, and appropriate risk management measures are in place to address any potential issues that may arise. With its strategic location and effective design, Floodwater Retention B-6 stands as a crucial infrastructure asset in the region's water resource management efforts, providing valuable protection against flooding for the community of Wellington and surrounding areas along Sand Creek.