Kerala Waterfalls and Lakes — Athirappilly, Vembanad, Ashtamudi, Pookode

Kerala’s waterfalls and lakes are frequently tested in Kerala PSC exams. District-wise identification and unique features are the most common question patterns. Expect 2-3 questions per paper.

Major Waterfalls of Kerala

Waterfall	District	River/Location	Height (approx.)	Key Facts
Athirappilly	Thrissur	Chalakudy River	24 m	Largest waterfall in Kerala; called “Niagara of India”; Vazhachal forest
Vazhachal	Thrissur	Chalakudy River	24 m	Located just upstream of Athirappilly; twin waterfalls
Meenmutty (Wayanad)	Wayanad	Tributary of Kabini	300 m (3 tiers)	Largest plunge waterfall; 3-tiered cascade; trek required
Meenmutty (Thiruvananthapuram)	Thiruvananthapuram	Neyyar tributary	45 m	Different from Wayanad Meenmutty; near Neyyar Dam
Thusharagiri	Kozhikode	Chalippuzha (tributary of Iruvanjhippuzha)	75 m (3 tiers)	Name means “Snow-capped peaks”; 3 falls — Thanni Muthassi, Erattakallu, Mazhavil Chattam
Soochipara	Wayanad	Tributary of Kabini	200 m (3 tiers)	Also called Sentinel Rock Waterfalls; trekking and swimming spot
Cheeyappara	Idukki	Deviyar River	7 cascades	On Kochi-Munnar highway; roadside waterfall
Valara	Idukki	Deviyar River	—	Near Cheeyappara on same highway
Palaruvi	Kollam	Palliyar River	91 m	Name means “Stream of Milk”; Aryankavu, near Thenmala
Aripara	Kozhikode	—	—	Near Thusharagiri; trekking destination
Thommankuthu	Idukki	—	12 m (7 steps)	Near Thodupuzha; seven-step waterfall
Dhoni	Palakkad	—	—	Near Dhoni Hills; dense forest area
Siruvani	Palakkad	Siruvani River	—	Famous for water quality (called “second tastiest water in the world” locally)
Keezharkuthu	Idukki	Near Munnar	—	One of the tallest waterfalls in South India

District-wise Waterfall Summary

District	Notable Waterfalls
Thrissur	Athirappilly, Vazhachal, Charpa
Wayanad	Meenmutty, Soochipara, Kanthanpara
Kozhikode	Thusharagiri, Aripara
Idukki	Cheeyappara, Valara, Thommankuthu, Keezharkuthu
Kollam	Palaruvi
Palakkad	Dhoni, Siruvani
Thiruvananthapuram	Meenmutty (TVM)

Major Lakes of Kerala

Backwater Lakes (Kayals)

Lake	District	Area	Key Facts
Vembanad Lake	Kottayam / Alappuzha / Ernakulam	2,033 sq km (largest lake in Kerala; longest lake in India)	Nehru Trophy Boat Race held here; Kumarakom Bird Sanctuary on eastern shore; Willingdon Island is artificial island in this lake; Ramsar site (2002)
Ashtamudi Lake	Kollam	61.4 sq km	”Gateway of Backwaters”; 8-armed (ashtamudi = eight branches); Ramsar site (2002); important clam fishery
Sasthamcotta Lake	Kollam	3.73 sq km	Largest freshwater lake in Kerala; only freshwater Ramsar site in Kerala; drinking water source for Kollam
Vellayani Lake	Thiruvananthapuram	0.89 sq km	Freshwater lake; irrigates surrounding paddy fields
Paravur Lake	Kollam	—	Backwater lake; connected to Arabian Sea

Hill Lakes

Lake	District	Key Facts
Pookode Lake	Wayanad	Freshwater lake at 770m altitude; shaped like India’s map; surrounded by evergreen forest; no inlet stream (rain-fed); rare Nilgiri Marten found nearby
Devikulam Lake	Idukki (Munnar)	Hill station lake; 1,800m altitude
Kundala Lake	Idukki (Munnar)	Artificial lake formed by Kundala Dam; shikara boating
Mattupetty Lake	Idukki (Munnar)	Artificial lake formed by Mattupetty Dam; popular tourist spot
Banasura Sagar	Wayanad	India’s largest earth dam; reservoir in Kalpetta

Artificial Lakes/Reservoirs

Reservoir	District	Dam	Key Facts
Idukki Reservoir	Idukki	Idukki Arch Dam	Asia’s first arch dam; between Kuravan and Kurathi hills
Malampuzha Reservoir	Palakkad	Malampuzha Dam	”Garden city”; Yakshi statue by Kanai Kunhiraman
Periyar Lake	Idukki	Mullaperiyar Dam	Part of Periyar Tiger Reserve; famous for boat safari
Sholayar Reservoir	Thrissur	Sholayar Dam	Hydroelectric project
Neyyar Reservoir	Thiruvananthapuram	Neyyar Dam	Crocodile rehabilitation centre; lion safari

Ramsar Wetland Sites in Kerala

Site	District	Year	Area (hectares)
Vembanad-Kol	Kottayam/Alappuzha/Ernakulam	2002	1,51,250
Ashtamudi	Kollam	2002	6,140
Sasthamcotta	Kollam	2002	373

Kerala has 3 Ramsar sites out of India’s 80+ total Ramsar sites (as of 2024).

Important Boat Races

Boat Race	Lake/River	District	Month
Nehru Trophy Boat Race	Punnamada Lake (part of Vembanad)	Alappuzha	August (2nd Saturday)
Aranmula Boat Race	Pampa River	Pathanamthitta	August-September (Onam)
Champakulam Moolam Boat Race	Pampa River	Alappuzha	June-July (oldest boat race in Kerala)
President’s Trophy Boat Race	Ashtamudi Lake	Kollam	November
Payippad Jalotsavam	Payippad Lake	Alappuzha	August-September

Rivers Associated with Waterfalls

River	Waterfalls
Chalakudy River	Athirappilly, Vazhachal
Chalippuzha	Thusharagiri
Deviyar	Cheeyappara, Valara
Palliyar	Palaruvi
Kabini tributaries	Meenmutty (Wayanad), Soochipara

PSC Quick Recall

Question	Answer
Largest waterfall in Kerala	Athirappilly (Thrissur)
Largest lake in Kerala	Vembanad Lake
Longest lake in India	Vembanad Lake
Largest freshwater lake in Kerala	Sasthamcotta Lake (Kollam)
Nehru Trophy Boat Race venue	Punnamada Lake (Vembanad), Alappuzha
Ashtamudi means	Eight branches
Ramsar sites in Kerala	3 — Vembanad-Kol, Ashtamudi, Sasthamcotta
Pookode Lake shape	Shaped like India’s map
Pookode Lake district	Wayanad
Stream of Milk waterfall	Palaruvi (Kollam)
Niagara of India	Athirappilly Falls
Thusharagiri means	Snow-capped peaks
Oldest boat race in Kerala	Champakulam Moolam
Willingdon Island is in which lake?	Vembanad Lake