Big V is a private recreation dam located in Natrona, Wyoming, along the Lone Tree Draw Trib Dead Horse river. Constructed in 1940 by designer Keith A. Neustel, this earth dam stands at 22 feet high and spans 1050 feet in length. With a storage capacity of 131 acre-feet and a surface area of 361 acres, Big V serves the primary purposes of fish and wildlife pond and recreation. The dam has a low hazard potential and fair condition assessment, last inspected in May 2021.

Owned privately, Big V is regulated by the State of Wyoming and falls under the jurisdiction of the State Engineer's Office. The dam features an uncontrolled spillway and an outlet gate for controlled water release. While the risk assessment for Big V is moderate, the dam meets all state permitting, inspection, and enforcement requirements. The surrounding area offers opportunities for outdoor enthusiasts to enjoy fishing, wildlife viewing, and recreational activities in a picturesque setting.