The Sundar River is a significant waterway located in the Sundarbans region of India and Bangladesh. It flows through a mangrove forest, contributing to the unique ecosystem of the area. The river is known for its rich biodiversity, including various fish species and wildlife. The Gomti River is a tributary of the Ganges River in northern India, primarily flowing through the state of Uttar Pradesh. It is an important source of water for irrigation and supports local communities. The river is also culturally significant, with several historical sites along its banks.