Lower Chalk Tank, located in Cochise, Arizona, is a privately owned earth dam completed in 2002 for fire protection, stock, and small fish pond purposes. With a dam height of 22.4 feet and a storage capacity of 54.3 acre-feet, this tank serves a vital role in water resource management in the area. The dam's low hazard potential and moderate risk assessment make it a reliable asset for the community.

Managed by the Arizona Department of Water Resources, Lower Chalk Tank is subject to state regulation, permitting, inspection, and enforcement to ensure its safety and functionality. Despite not being rated for condition assessment, the tank has a history of regular inspections, with the last one conducted in December 2010. The tank's location in a remote area with unknown river or stream connections highlights its importance in providing water resources for local wildlife and firefighting efforts.

Overall, Lower Chalk Tank stands as a valuable water resource infrastructure in Arizona, contributing to water storage, fire protection, and ecological support in the region. Its strategic location, design, and management by state authorities make it a crucial component in sustaining water availability and climate resilience in Cochise County.