The Dingwall Ditch Reg. is a privately owned irrigation structure located in Lamar, Colorado, along the Arkansas River. Built in 1964, this earth dam stands at a height of 23 feet and has a length of 2640 feet, with a storage capacity of 958 acre-feet. The primary purpose of this dam is for irrigation, with additional benefits including flood risk reduction and recreational opportunities.

Despite being classified as having a low hazard potential and fair condition assessment, the Dingwall Ditch Reg. is subject to state regulation, inspection, and enforcement by the Colorado Department of Water Resources. With a maximum discharge capacity of 18,500 cubic feet per second and a surface area of 71 acres, this dam plays a crucial role in managing water resources in the region. The risk assessment for this structure is categorized as high (2), indicating the importance of maintaining its integrity and safety.

Overall, the Dingwall Ditch Reg. serves as a vital component of the water infrastructure in Bent County, Colorado, providing essential irrigation water for agricultural purposes while also contributing to flood control and recreational activities. As a privately owned and state-regulated structure, its maintenance and upkeep are crucial to ensuring the continued reliability and safety of this important water resource in the region.