Langholen is a private irrigation dam located in Parshall, Colorado, on Battle Creek. Built in 1915, this earth dam stands at 24 feet in height and has a storage capacity of 158 acre-feet. The dam serves the primary purpose of irrigation and has a normal storage level of 64 acre-feet, covering a surface area of 10 acres with a drainage area of 14 square miles.

Despite being of low hazard potential, Langholen underwent structural modifications in 1991 to ensure its safety and functionality. The dam features a slide (sluice gate) outlet gate and an uncontrolled spillway with a width of 22 feet. With a maximum discharge capacity of 580 cubic feet per second, Langholen is regulated, inspected, and enforced by the Colorado Department of Water Resources, ensuring compliance with state permitting and inspection requirements.

While Langholen presents a moderate risk level (3), its condition assessment in 2015 deemed it satisfactory. The dam is equipped to handle emergencies with a designated emergency action plan (EAP) preparation status unknown. With its historical significance and ongoing maintenance, Langholen stands as a testament to early irrigation infrastructure in Colorado, serving as a vital water resource for the surrounding agricultural community.