The Vaigai River is a significant river in the southern Indian state of Tamil Nadu. It originates from the Western Ghats near the town of Perumalmalai and flows through several districts, including Madurai, before emptying into the Gulf of Mannar. The river plays a crucial role in irrigation and supports agriculture in the region. The Vaigai River is approximately 258 kilometers long and is known for its seasonal flow, which varies significantly between the monsoon and dry seasons. It is also home to various aquatic species and supports local ecosystems. The river is vital for the livelihoods of many communities along its banks.