The Lower Salt Watershed (HUC 15060106) covers an area of approximately 433 square miles in central Arizona. The hydrology of the area is dominated by the Salt River, which flows through the watershed and is fed by several smaller tributaries. The watershed is characterized by a semi-arid climate, with hot summers and mild winters. Snowpack is typically limited in this area, and surface water is largely dependent on precipitation events. There are several reservoirs in the watershed, including the Roosevelt Lake and Saguaro Lake, which provide water for irrigation, municipal use, and recreation. As with many areas in the southwestern United States, the Lower Salt Watershed is facing challenges related to water management and drought. In recent years, there has been a trend toward decreasing precipitation and increasing temperatures in the region.