A-1, also known as A-1 Lake, is a federally owned recreational water resource located in Apache County, Arizona. Managed by the Bureau of Indian Affairs, this Earth dam was completed in 1966 and has a structural height of 37 feet. With a storage capacity of 271 acre-feet, A-1 serves as a popular spot for outdoor activities and water-based recreation.

Situated on the North Fork White River, A-1 has a controlled spillway and a high hazard potential. Despite its condition assessment being listed as "Not Available," the risk assessment categorizes A-1 as having a very high risk level. With an inspection frequency of 5 years and emergency action plan last revised in 2011, efforts are being made to ensure the safety and integrity of this vital water resource in the region.

As a significant water infrastructure in the area, A-1 plays a crucial role in providing recreational opportunities while also facing potential safety risks. With its scenic location and important function, it remains a focal point for water resource and climate enthusiasts interested in understanding the complexities and challenges of managing such structures in the face of changing environmental conditions.