Tomahawk is a privately owned earth dam located in Gunnison, Colorado, specifically in the city of Paonia. It was designed by the USDA NRCS and completed in 1957 for the primary purpose of irrigation. The dam stands at a height of 30 feet and has a hydraulic height of 32 feet, with a length of 388 feet and a storage capacity of 144 acre-feet.

The dam serves multiple purposes including irrigation, fire protection, stock, small fish pond, and recreation. It is regulated by the Colorado Department of Water Resources and is subject to state permitting, inspection, and enforcement. Despite being in fair condition as of the last assessment in September 2019, Tomahawk has a significant hazard potential and a high risk assessment ranking, indicating the need for ongoing risk management measures to ensure its continued safety and functionality.

Located along Muddy Creek, Tomahawk plays a crucial role in water resource management in the region. With its historical significance dating back over six decades, the dam remains a key feature in the local landscape and a vital infrastructure for supporting agricultural activities in the area. Water resource and climate enthusiasts can appreciate the intricate design and engineering behind Tomahawk, as well as the ongoing efforts to maintain its integrity and mitigate potential risks associated with its operation.