This chapter provides a detailed examination of the main rivers originating from the northern Qinling Mountains, which serve as critical water sources for the Guanzhong Plain. A total of 253 river valleys span the northern slopes, with rivers classified into two major types based on geomorphology and recharge sources, narrow mountainous rivers fed primarily by precipitation and broader valley rivers sustained by groundwater. The chapter provides case studies on key rivers across Baoji, Xi’an, and Weinan. Each case includes hydrological characteristics, water quality conditions, recharge mechanisms, ecological functions, and infrastructure projects such as reservoirs. The chapter emphasizes the importance of these rivers for urban water supply, ecological conservation, and regional water security, laying the foundation for further hydrological assessment and integrated water resource management strategies.