Located in Niobrara County, Wyoming, Bad Land No. 1 is an Earth-type dam completed in 1962 for irrigation purposes on the Bad Land Draw river. Standing at 18 feet tall with a hydraulic height of 13 feet, this structure spans 945 feet in length and has a storage capacity of 194 acre-feet. Despite its low hazard potential, the dam is rated in poor condition, with a moderate risk assessment score of 3.

Owned privately, Bad Land No. 1 is regulated by the Wyoming State Engineer's Office, with state permitting, inspection, and enforcement in place. The dam features an uncontrolled spillway with a width of 100 feet and is equipped with a slide gate outlet for water discharge. The last inspection was conducted in November 2019, with a scheduled frequency of every 5 years to assess its structural integrity and safety measures.

While the dam serves its primary purpose of irrigation, enthusiasts of water resources and climate can appreciate the significance of maintaining and monitoring Bad Land No. 1 to ensure its continued functionality and safety within the landscape of Edgemont, S.D. With its historical construction date and essential role in water management, this structure highlights the intersection of human infrastructure and natural resource stewardship in the region.