The Santa Cruz River is a major waterway in southern Arizona that flows from the San Rafael Valley to Mexico. The river has been the subject of various research areas, including hydrology, ecology, and environmental science. Researchers have studied the flow patterns, water quality, and biodiversity of the Santa Cruz River to better understand the impact of human activities, such as agriculture and urban development, on the river's ecosystem. Additionally, researchers have explored the history of the Santa Cruz River and its role in shaping the cultural and natural landscapes of the region. Overall, research on the Santa Cruz River aims to inform conservation efforts and sustainable water management practices in the area.