Lower Big Creek, also known as Big Creek Lake, is a privately owned water resource located in Cowdrey, Colorado. This irrigation dam, completed in 1978, stands at a height of 10 feet and has a storage capacity of 3,834 acre-feet. With a surface area of 600 acres and a drainage area of 11 square miles, Lower Big Creek serves as a vital source of water for agricultural purposes in the region.

Managed by the Colorado Division of Water Resources, Lower Big Creek is regulated and inspected regularly to ensure its structural integrity and compliance with state guidelines. The dam features an uncontrolled spillway with a width of 76 feet, and has a low hazard potential with a fair condition assessment rating. Despite its moderate risk level, the dam plays a crucial role in water management and irrigation for the surrounding area.

Situated along the South Tributary of Big Creek, Lower Big Creek contributes to the overall water supply and ecosystem in Jackson County, Colorado. With its strategic location and functional design, this earth dam continues to support agricultural activities and water resources management, making it a key asset for the community and a point of interest for water resource and climate enthusiasts.