Upper Chalk Tank is a private water resource located in Cochise, Arizona, with a primary purpose of serving as a fire protection, stock, or small fish pond. Completed in 2002, this earth dam stands at a height of 30.8 feet and has a hydraulic height of 41.1 feet, providing a storage capacity of 117.6 acre-feet. The tank covers a surface area of 11.5 acres and has a drainage area of 2.8 acres, making it an essential resource for the local community.

Managed by the Arizona Department of Water Resources, Upper Chalk Tank is regulated, permitted, inspected, and enforced by state agencies to ensure its safety and functionality. With a low hazard potential and moderate risk assessment rating, the tank presents a reliable water storage solution for firefighting, livestock watering, and recreational fishing. Despite not being currently rated for its condition, the tank's last inspection in 2010 deemed it to be in satisfactory working order, highlighting its importance in the region's water management infrastructure.

Located at coordinates 32.07778 latitude and -109.81917 longitude, Upper Chalk Tank plays a crucial role in water conservation and climate resilience efforts in Arizona. As a key component of the state's water infrastructure, this tank serves as a model for sustainable water resource management, showcasing the importance of private initiatives in safeguarding water availability for various purposes while mitigating potential risks associated with dam operations.