Knoll is a state-regulated dam located in Coconino, Arizona, near the city of Winslow. Built in 1963, this Earth dam stands at a height of 58 feet and serves primarily as a Fish and Wildlife Pond, with additional purposes including recreation. The dam has a storage capacity of 1,774 acre-feet and covers a surface area of 77 acres, drawing water from the East Leonard Canyon Creek.

Managed by the Arizona Department of Water Resources, Knoll has a low hazard potential and a moderate risk assessment rating. The dam has not been rated for its condition, with the last inspection taking place in May 2012. It is equipped with an uncontrolled spillway with a width of 40 feet and a maximum discharge capacity of 875 cubic feet per second. While there are no locks associated with the dam, it is crucial for the conservation of fish and wildlife in the area.

Water resource and climate enthusiasts will find Knoll to be an intriguing structure due to its role in supporting local ecosystems and recreational activities. With its picturesque location in the Coconino County, this dam serves as a vital water source for the region while also providing a habitat for various species. The management and maintenance of Knoll by the Arizona Department of Water Resources ensure its continued functionality and safety for the community and the environment.