The Neyyar River is a river of south-western India

India

India , officially the Republic of India , is a country in South Asia. It is the seventh-largest country by geographical area, the second-most populous country with over 1.2 billion people, and the most populous democracy in the world...

 in the Western Ghats

Western Ghats

The Western Ghats, Western Ghauts or the Sahyādri is a mountain range along the western side of India. It runs north to south along the western edge of the Deccan Plateau, and separates the plateau from a narrow coastal plain along the Arabian Sea. The Western Ghats block rainfall to the Deccan...

. It flows from the Agastya Mala

Agastya Mala

Agastya Mala is a peak within Neyyar Wildlife Sanctuary, Kerala in the Western Ghats of South India. The mountain lies on the border between the Indian states of Kerala and Tamil Nadu...

 (also known as Agastyarkoodam) hills in of Thiruvananthapuram District

Thiruvananthapuram district

Thiruvananthapuram District is the southernmost district of the Indian state of Kerala. It came into existence in the year 1957. The headquarters is the city of Thiruvananthapuram which is also the capital city of Kerala....

 of Kerala

Kerala

or Keralam is an Indian state located on the Malabar coast of south-west India. It was created on 1 November 1956 by the States Reorganisation Act by combining various Malayalam speaking regions....

 state.

The river passes through Neyyattinkara taluk into the Arabian Sea

Arabian Sea

The Arabian Sea is a region of the Indian Ocean bounded on the east by India, on the north by Pakistan and Iran, on the west by the Arabian Peninsula, on the south, approximately, by a line between Cape Guardafui in northeastern Somalia and Kanyakumari in India...

 near Poovar

Poovar

Poovar is a small coastal village in the Trivandrum district of Kerala state, south India. This village is almost at the southern tip of Trivandrum and there is only one last village Pozhiyoor which mark the end of kerala. This village has a beautiful beach which attracts tourists. There are also...

. It has a total length of 56 km. Tributaries include the Kallar River

Kallar River

Kallar is a river flowing in the Vellore district of the Indian state of Tamil Nadu....

, Mullayar River, and the Karavaliyar River. It has several small canals along the river and the Neyyar Irrigation Project is situated in this river. A safari park is located near the river.