Edamalayar or Idamalayar is one of the major

tributaries A tributary, or affluent, is a stream or river that flows into a larger stream or main stem (or parent) river or a lake. A tributary does not flow directly into a sea or ocean. Tributaries and the main stem river drain the surrounding drainage b ...

of the

Periyar river Periyar, , (meaning: ''big river'') is the longest river and the river with the largest discharge potential in the Indian state of Kerala. It is one of the few perennial rivers in the region and provides drinking water for several major towns. ...

, the longest river in

Kerala Kerala ( ; ) is a state on the Malabar Coast of India. It was formed on 1 November 1956, following the passage of the States Reorganisation Act, by combining Malayalam-speaking regions of the erstwhile regions of Cochin, Malabar, South ...

state

south India South India, also known as Dakshina Bharata or Peninsular India, consists of the peninsular southern part of India. It encompasses the Indian states of Andhra Pradesh, Karnataka, Kerala, Tamil Nadu, and Telangana, as well as the union territo ...

Idamalayar Dam Idamalayar Dam is a multipurpose concrete gravity dam located at Ennakkal between Ayyampuzha and Bhoothathankettu in Ernakulam district of Kerala on the Idamalayar, a tributary of the Periyar River in Kerala, South India. The dam however ex ...

is situated in this river. It originates in the

Anamalai The Anamala or Anaimalai, also known as the Elephant Mountains, are a range of mountains in the southern Western Ghats of central Kerala ( Idukki district, Ernakulam district, Palakkad district, Thrissur district) and span the border of west ...

s of

Ernakulam district Ernakulam, ; ISO: ''Eṟaṇākuḷaṁ'', in Malayalam: എറണാകുളം), is one of the 14 districts in the Indian state of Kerala, that takes its name from the eponymous city division in Kochi. It is situated in the central part o ...

, and flows into

Tamil Nadu Tamil Nadu (; , TN) is a States and union territories of India, state in southern India. It is the List of states and union territories of India by area, tenth largest Indian state by area and the List of states and union territories of India ...

. It re-enters Kerala near

Malakkappara Malakkappara or Malakhappara is a small hill station in Thrissur district, in Thrissur district of the state of Kerala, India. This place is situated on the border between Kerala and Tamil Nadu. Etymology The place gets its name from the Mala ...

, and flows into the

. It joins the

Periyar Erode Venkatappa Ramasamy (17 September 1879 – 24 December 1973), revered as Periyar or Thanthai Periyar, was an Indian social activist and politician who started the Self-Respect Movement and Dravidar Kazhagam. He is known as the 'F ...

near

Kuttampuzha Kuttampuzha is a village and gram panchayat in Ernakulam district in the Indian state of Kerala.2001 Village code=00087900 Situated 71km east of Kochi, Kuttampuzha panchayat is home to the 17.7% of total area of the Ernakulam District. The v ...

Other major tributaries of Periyar river

Muthirapuzha River Muthirapuzha River is one of the major tributaries of the Periyar River, the longest river in Kerala state south India. It begins in remote forests above the Pooyamkutty- Edamalayar valley in Ernakulam district of Kerala, and joins the Periyar a ...

Mullayar Mullayar River is a tributary of the Periyar River, the longest river in Kerala. It originates at Kottamalai peak in the Periyar Tiger Reserve. The Mullayar flows west through the reserve and joins the Periyar at Mullakudy just at the beginni ...

Cheruthoni Cheruthoni () is a town on the banks of Cheruthoni River, a major tributary of the Periyar River, the second longest river in Kerala state, India. The area is known by Cheruthoni Dam, which is a part of Idukki reservoir, which provide hydroelect ...

Perinjankutti Perinjankutti River is one of the major tributaries of the Periyar River, the longest river in Kerala state of south India. See also * Periyar River - Main river Other major tributaries of Periyar river *Muthirapuzha River *Mullayar *Cheruth ...

Rivers of Ernakulam district Periyar (river) {{India-river-stub