Billings Lake Wpa 1 Dam, also known as Billings Lake Dike, is a federal-owned structure located in Cavalier, North Dakota. Constructed in 1977 by the Bureau of Reclamation, this earth dam serves as a Fish and Wildlife Pond, with the primary purpose of supporting wildlife in the area. The dam has a height of 13 feet and a length of 1200 feet, with a storage capacity of 384 acre-feet and a surface area of 36.92 acres.

Managed by the Fish and Wildlife Service, Billings Lake Wpa 1 Dam is regulated by the North Dakota State Water Commission and undergoes regular inspections to ensure its safety and functionality. With a low hazard potential and a satisfactory condition assessment, the dam has shown resilience since its last inspection in August 2015. The structure has also undergone modifications in 1998 to improve its hydraulic and structural aspects, showcasing a commitment to maintaining its integrity.

Situated along the Edmore Coulee, Billings Lake Wpa 1 Dam plays a crucial role in water resource management and wildlife conservation in the region. With its controlled outlet gates and adequate storage capacity, the dam contributes to flood control and provides a habitat for various species. As a significant feature in the local ecosystem, this dam exemplifies the harmonious intersection of water resource management and environmental stewardship in North Dakota.