Masonry #2 is a historic dam located in Coconino, Arizona, along the Johnson Canyon stream. Built in 1911, this masonry dam stands at a height of 48 feet and spans a length of 596 feet, providing a reservoir with a storage capacity of 247 acre-feet for purposes such as fish and wildlife habitat, fire protection, and recreation. The dam is regulated by the Arizona Department of Water Resources and is inspected regularly to ensure its structural integrity.

Despite its age, Masonry #2 has been assessed as being in satisfactory condition, with a high hazard potential due to its location and the volume of water it holds. The dam features an uncontrolled spillway and is classified as a multi-arch masonry structure built on a rock foundation. With a surface area of 15 acres and a drainage area of 29.5 square miles, the dam plays a crucial role in managing water resources in the region and supporting the local ecosystem.

While Masonry #2 poses a moderate risk level and has not been modified in recent years, it remains a key component of the area's infrastructure for maintaining water supply and supporting wildlife. As a fish and wildlife pond, the dam serves as a vital resource for the community and highlights the intersection of water management, climate resilience, and environmental conservation in the region.