Vanderval Dam, also known as Karl Dam, is a private earth dam located in Emmons County, North Dakota. Built in 1969 by the USDA NRCS, this dam serves multiple purposes including fire protection, stock watering, and a small fish pond. With a height of 23 feet and a storage capacity of 64 acre-feet, Vanderval Dam plays a crucial role in water resource management in the area.

Managed by the North Dakota State Water Commission, Vanderval Dam is regulated, permitted, inspected, and enforced to ensure its safety and functionality. The dam has a low hazard potential and a moderate risk assessment rating. The spillway, with a width of 100 feet, is uncontrolled, and there are no outlet gates associated with the structure. Although the condition of Vanderval Dam is currently not rated, its importance in providing water for various purposes makes it a key feature in the local landscape.

Located on the Missouri River tributary, Vanderval Dam is a vital resource for the surrounding community. With its structured design and regulatory oversight, this dam serves as a reliable source of water for firefighting, livestock, and recreational fishing. Vanderval Dam stands as a testament to the importance of proper water resource management and climate resilience in the face of changing environmental conditions.