The Salt Watershed (HUC 07130009) covers an area of approximately 4,200 square miles in central Arizona, USA. The hydrology of the watershed is characterized by a mix of surface water and groundwater sources, with most of the surface water coming from the Salt and Verde rivers. The watershed receives a significant amount of snowpack during the winter months, which contributes to the surface water levels during the spring and summer. The reservoirs within the watershed, including Roosevelt, Apache, and Canyon, are important sources of water for the region. The climate in the watershed is semi-arid, with hot summers and mild winters. Over the past few decades, the watershed has experienced an increase in temperature and a decrease in precipitation, which has led to concerns about water scarcity and drought. The watershed is also home to a diverse array of plant and animal species, including the threatened Mexican spotted owl and the sensitive Chiricahua leopard frog.