The Gandak River is a significant river in northern India and Nepal, flowing through the Himalayan region. It originates from the Napal mountains and travels approximately 507 kilometers before merging with the Ganges River in Bihar, India. The river is known for its rich biodiversity and supports various ecosystems along its banks. The Gandak River serves as an important water source for irrigation and drinking water in the surrounding areas. It also plays a vital role in the local economy, supporting agriculture and fishing activities. The river's basin is home to several towns and villages, contributing to the livelihoods of many residents.