Atchison is a privately owned earth dam located in Eagar, Arizona, along the Water Canyon Creek. Constructed in 1920, this dam serves multiple purposes including fire protection, stock watering, and creating a fish and wildlife pond. With a height of 8 feet and a length of 220 feet, Atchison has a storage capacity of 205 acre-feet and covers a surface area of 52 acres.

Despite being classified as having a low hazard potential, Atchison poses a high risk due to its condition being rated as "Not Rated." The dam is under the jurisdiction of the Arizona Department of Water Resources and is subject to state regulations, inspections, and enforcement. The last inspection was conducted in August 2005, with an inspection frequency of 5 years.

Climate and water resource enthusiasts will find Atchison an interesting structure to study, given its historical significance and its role in providing water for wildlife and irrigation. As a privately owned dam, it highlights the importance of proper maintenance and management to ensure safety and sustainability in water resource infrastructure. Researchers and policymakers may also be intrigued by the risk assessment and management measures associated with Atchison, emphasizing the need for proactive monitoring and maintenance of critical water infrastructure.