Geography of Kerala

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Agroecological zones of Kerala
Kerala's agroecological zones. Kerala ecozones map labelled3.png
Kerala's agroecological zones.

Kerala's districts, shaded by biome and soil types.
[1]

Kerala (38,863 km2; 1.18% of India's land) is situated between the Lakshadweep Sea to the west and the Western Ghats to the east. Kerala's coast runs some 580 km in length, while the state itself varies between 35–120 km in width. Geologically, pre-Cambrian and Pleistocene formations comprise the bulk of Kerala's terrain. The topography consists of a hot and wet coastal plain gradually rising in elevation to the high hills and mountains of the Western Ghats. Kerala lies between northern latitude of 8°.17'.30" N and 12°. 47'.40" N and east longitudes 74°.27'.47" E and 77°.37'.12" E. [2] Kerala's climate is mainly wet and maritime tropical, [3] heavily influenced by the seasonal heavy rains brought up by the monsoon.

Contents

Climate

Athirappilly Falls, the largest waterfall in the state. The View of the Athirapally Falls during the onset of Monsoon.jpg
Athirappilly Falls, the largest waterfall in the state.

Kerala, which lies in the tropic region, is mostly subject to the type of humid tropical wet climate experienced by most of Earth's rainforests. As per Köppen climate classification, it belongs to the category of Tropical monsoon climate [4] Meanwhile, its extreme eastern fringes experience a drier tropical wet and dry climate. Kerala receives an average annual rainfall of 3107 mm – some 7,030  crore m3 of water. This compares to the all-India average is 1,197 mm. Parts of Kerala's lowlands may average only 1250 mm annually while the cool mountainous eastern highlands of Idukki district – comprising Kerala's wettest region – receive in excess of 5,000 mm of orographic precipitation (4,200 crore of which are available for human use) annually. Kerala's rains are mostly the result of seasonal monsoons. As a result, Kerala averages some 120–140 rainy days per year. In summer, most of Kerala is prone to gale-force winds, storm surges, and torrential downpours accompanying dangerous cyclones coming in off the Indian Ocean. Kerala's average maximum daily temperature is around 37 °C; the minimum is 19.8 °C.

The moisture-laden winds of the Southwest Monsoon, on reaching the southernmost point of the Indian Peninsula, because of its topography, divides into two branches; the "Arabian Sea Branch" and the "Bay of Bengal Branch". [5] The "Arabian Sea Branch" of the Southwest monsoon first hits the Western Ghats, [6] making Kerala the first state in India to receive rain from the Southwest monsoon. [7] [8]


Geography

Topography of Kerala's largest backwaters region
Topographical chart of the backwaters region, centered on the districtrs of Eranakulam, Alappuzha, Kottayam, Pathanamthitta, and Kollam. Kerala Backwaters.png
Topographical chart of the backwaters region, centered on the districtrs of Eranakulam, Alappuzha, Kottayam, Pathanamthitta, and Kollam.
   Indian Ocean.
   Inland freshwater bodies and estuaries.
   Coastal lowlands and midlands.
   Montane highlands (Western Ghats).
   Urbanized areas (towns and cities).
   Land transportation network (e.g., roads).
Chembra Peak, Wayanad Blue, Green & White.jpg
Chembra Peak, Wayanad
Vembanad, the largest lake in India, is a portion of the Kerala Backwaters Vembanad Lake at Kumarakom.jpg
Vembanad, the largest lake in India, is a portion of the Kerala Backwaters

A substantial portion of Malabar Coast including the western coastal lowlands and the plains of the midland may have been under the sea in ancient times. Marine fossils have been found in an area near Changanassery, thus supporting the hypothesis. [9] Pre-historical archaeological findings include dolmens of the Neolithic era in the Marayur area of the Idukki district, which lie on the eastern highland made by Western Ghats. Rock engravings in the Edakkal Caves, in Wayanad, date back to the Neolithic era around 6000 BCE. [10] [11]

Eastern Kerala consists of land encroached upon by the Western Ghats; the region thus includes high mountains, gorges, and deep-cut valleys. The wildest lands are covered with dense forests, while other regions lie under tea and coffee plantations (established mainly in the 19th and 20th centuries) or other forms of cultivation. Forty-one of Kerala's forty-four rivers originate in this region, and the Cauvery River descends from there and drains eastwards into neighboring states. Here, the Western Ghats form a wall of mountains penetrated near Palakkad; here, a natural mountain pass known as the Palakkad Gap breaks through to access inner India. The Western Ghats rises on average to 1500 m elevation above sea level. Certain peaks may reach to 2500 m. Just west of the mountains lie the midland plains, comprising a swathe of land running along central Kerala. Here, rolling hills and shallow valleys fill a gentler landscape than the highlands. In the lowest lands, the midlands region hosts paddy fields; meanwhile, elevated lands slopes play host to groves of rubber and fruit trees in addition to other crops such as black pepper, tapioca, and others. Wayanad is the sole Plateau in Kerala. [12] The eastern regions in the districts of Wayanad, Malappuram (Chaliyar valley at Nilambur), and Palakkad (Attappadi Valley), which together form parts of the Nilgiri Biosphere Reserve and a continuation of the Mysore Plateau, are known for natural Gold fields, along with the adjoining districts of Karnataka. [13]

Muzhappilangad Beach, the longest drive-in beach in Asia Muzhappilangad Drive-in Beach 2.jpg
Muzhappilangad Beach, the longest drive-in beach in Asia
Payyambalam beach at Kannur. Payyambalam Beach Back Water.jpg
Payyambalam beach at Kannur.

Finally, Kerala's coastal belt is relatively flat, teeming with paddy fields, groves of coconut trees, and heavily crisscrossed by a network of interconnected canals and rivers. The comparative water-richness of the coastal belt can be partly gauged by the fact that Kuttanad, with its backwaters canals and rivers, itself comprises more than 20% of India's waterways by length. Kuttanad, also known as The Rice Bowl of Kerala, has the lowest altitude in India, and is also one of the few places in world where cultivation takes place below sea level. [14] [15] Minerals including Ilmenite, Monazite, Thorium, and Titanium, are found in the coastal belt of Kerala. [16] Kerala's coastal belt of Karunagappally is known for high background radiation from thorium-containing monazite sand. In some coastal panchayats, median outdoor radiation levels are more than 4 mGy/yr and, in certain locations on the coast, it is as high as 70 mGy/yr. [17] The most important of Kerala's forty-four rivers include the Periyar (244 km in length), the Bharathapuzha (209 km), the Pamba River (176 km),the Chaliyar river(169) the Chalakudy Puzha(144 km), the Kadalundipuzha (130 km), and the Achancoil (128 km). Most of the remainder are small and entirely fed by the Monsoons.

Periyar, the longest river of Kerala. Fish net over Periyar River 0.jpg
Periyar, the longest river of Kerala.

There are 44 rivers in Kerala, all but three originating in the Western Ghats. 41 of them flow westward and 3 eastward. The rivers of Kerala are small, in terms of length, breadth and water discharge. The rivers flow faster, owing to the hilly terrain and as the short distance between the Western Ghats and the sea. All the rivers are entirely monsoon-fed and many of them shrink into rivulets or dry up completely during summer.

A House Boat View from Biyyam backwater, Ponnani, India Kerala Houseboat (191490747).jpeg
A House Boat View from Biyyam backwater, Ponnani, India

The Kerala Backwaters region is a particularly well-recognized feature of Kerala; it is an interconnected system of brackish water lakes and river estuaries that lies inland from the coast and runs virtually the length of the state. These facilitate inland travel throughout a region roughly bounded by Thiruvananthapuram in the south and Vatakara (which lies some 450 km to the north). There are 34 backwaters in Kerala Lake Vembanad—India's largest body of water —dominates the backwaters; it lies between Alappuzha and Kochi and is over 200 km2 in area. Major lakes of Kerala include:

Mountains

The peak of Anamudi in Kerala is the highest peak in the Western Ghats, as well as the highest in India outside the Himalayas AnaimudiPeak DSC 4834.jpg
The peak of Anamudi in Kerala is the highest peak in the Western Ghats, as well as the highest in India outside the Himalayas

The Western Ghats is a continuous mountain range of 450 km along the eastern side of Kerala. It forms almost an unbroken wall guarding the eastern frontier and helps the people of Kerala to lead a sheltered life of their own through the centuries. The Western Ghats is also responsible for the high and steady rainfall in Kerala. It converts 50% of Kerala into highlands and is studded with more than 50 peaks above 5000 feet above Mean Sea Level. With a height of 8841 feet (2,695 metres), Anamudi is the highest peak in India outside Himalayas. Anamudi is located in Idukki district in Kerala. The Athirappilly Falls, which is situated on the background of Western Ghat mountain ranges, is also known as The Niagara of India. [18] It originates from the peak of Anamudi and is also the largest waterfall in the state. [18]

Natural Hazards in Kerala

Districts and multi-hazard zones of Kerala
Multi-hazard map of Kerala. Kerala India multi hazard zones map.PNG
Multi-hazard map of Kerala.

The districts of Kerala shaded by the risk faced from cyclonic winds (denoted as "W/C"), earthquakes ("E"), and catastrophic flooding ("F"). Risk levels range from high ("H") to medium ("M") to low/none ("L").
Source: (UNDP 2002).

Kerala is prone to several natural hazards, the most common of them being landslides, flooding, lightning, drought, coastal erosion, earthquakes, Tsunami, wind fall and epidemics. [19]

Landslides

The highlands of Kerala experience several types of landslides, of which debris flows are the most common. They are called 'Urul Pottal' in the local vernacular. The characteristic pattern of this phenomenon is the swift and sudden downslope movement of highly water saturated overburden containing a varied assemblage of debris material ranging in size from soil particles to boulders, destroying and carrying with it every thing that is lying in its path. The west facing Western Ghats scarps that runs the entire extent of the mountain system is the most prone physiographic unit for landslides. These scarp faces are characterised by thin soil (regolith) cover modified heavily by anthropogenic activity. [20] The highlands of the region experience an annual average rainfall as high as 500 cm from the South-West, North-East and Pre-Monsoon showers. A review of ancient documents, investigation reports and news paper reports indicates a lesser rate of slope instability in the past; 29 major landslide events that occurred in the recent past was identified through the review. [21] The processes leading to landslides were accelerated by anthropogenic disturbances such as deforestation since the early 18th century, terracing and obstruction of ephemeral streams and cultivation of crops lacking capability to add root cohesion in steep slopes. The events have become more destructive given the increasing vulnerability of population and property. Majority of mass movements have occurred in hill slopes >20° along the Western Ghats scarps, the only exception being the coastal cliffs. Studies conducted in the state indicates that prolonged and intense rainfall or more particularly a combination of the two and the resultant persistence and variations of pore pressure are the most important trigger of landslides. [22] The initiation of most of the landslides were in typical hollows generally having degraded natural vegetation. All except 1 of the 14 districts in the state are prone to landslides. Wayanad and Kozhikode districts are prone to deep-seated landslides while Idukki and Kottayam are prone to shallow landslides. A very recent study indicates that the additional cohesion provided by vegetation roots in soil is an important contributor to slope stability in the scarp faces of the Western Ghats of Kerala. [23]

Flooding

Although the Kerala state does not experience floods as severe as in the Indo-Gangetic plains, incidence of floods in the State is becoming more frequent and severe. The latest among them was the 2020 Kerala floods. The continuous occurrence of high intensity rainfall for a few days is the primary factor contributing to the extreme floods in the State. Other factors include wrong land use practices and mismanagement of the water resources and forests. The human interventions contributing to flood problems are predominantly in the form of reclamation of wetlands and water bodies, change in land use pattern, construction of dense networks of roads, establishment of more and more settlements, deforestation in the upper catchments etc. Increasing floodplain occupancy results in increasing flood damages. A number of extreme flood events occurred during the last century causing considerable damage to life and property highlight the necessity for proper flood management measures in the State. The flood problems are likely to worsen with the continued floodplain occupancy and reclamation of water bodies and wetlands. It is estimated that about 26% of the total geographical area accommodating about 18% of the total population of the State is prone to floods. [19]

Lightning

Kerala is a place of high lightning incidence compared to most of the other parts in India because of its weather patterns and the location of the Western Ghats. Higher population density and vegetation density result in more casualties. Lack of awareness also aggravates the situation. Accidents caused by ground conduction from trees, which is a special feature of Kerala, add to the casualties and loss of property. The records show that the months April, May, October and November have the highest lightning rates. The most active time of the day is from 15:00 to 19:00. Of the fourteen districts, five have much higher rates than others. The severe impact of the hazard on the state and its people is seen from the very high average casualty rates of 71 deaths, 112 injuries and 188 accidents per annum. Losses to telephone communications, networked systems and electrical equipment are also very high. [19]

Drought

Topographic map showing major cities Topography of Kerala.png
Topographic map showing major cities

Kerala has been experiencing increasing incidents of drought in the recent past due to the weather anomalies and developmental pressures resulting from the changes in land use, traditional practices, and life style of the people. The increase in population and subsequent expansion in irrigated agriculture, and industrial growth necessitated the exploitation of more water resources. The changes in the land and water management practices affected the fresh water availability during summer months. Although the deviation in the annual rainfall received in Kerala, in any year from the long term average is very small, there is considerable variation in the rainfall availability during the different seasons. About 95 percent of annual rainfall is confined to a six-month monsoon period between June and November, leaving the remaining six months as practically dry. Soman (1988) reported that over major part of the Kerala State, extreme as well as these where the rainfall is more compared to other areas. The changes in rainfall pattern may have association with the environmental modifications due to human interventions on the natural ecosystems. The State of Kerala experiences seasonal drought conditions every year during the summer months. Even in the years of normal rainfall, summer water scarcity problems are severe in the midland and highland regions. Severe drought conditions often result from the anomalies in monsoon rainfall combined with the various anthropogenic pressures. A study on the incidence of droughts based on the aridity index shows that during the period 1871– 2000, the State of Kerala experienced 66 drought years, out of which, twelve each were moderate and severe droughts. The droughts have a large dimension of economic, environmental and social impacts. With the implementation of a number of irrigation projects, the idea of drought in Kerala slowly shifted to unirrigated paddy, and upland crops. The water scarcity in summer is mainly reflected in dry rivers and lowering of water table. This adversely affects the rural and urban drinking water supply. As seen in the majority of drought incidents, even a 20% fall in the northeast monsoon, can make the water scarcity situation worse during the summer. Since the State has more of perennial plantation crops compared to other places of India, the effect of a drought year in Kerala continues to be felt for several more years after it has occurred. Thus, for better planning of the drought management measures, the term drought with reference to plantation crops should be redefined based on rainfall received or available soil moisture during summer months instead of total monsoon rainfall. [19]

Tsunami

The Kerala coast was significantly affected by the 2004 Indian Ocean tsunami. The coast located in the shadow zone with respect to the direction of propagation of the tsunami encountered unexpected devastation. Although the tsunami affected parts of Kerala coast, maximum devastation was reported in the low coastal land of Kollam, Alappuzha and Ernakulam districts, particularly a strip of 10 km in Azhikkal, Kollam district. This varying effect along the coast could be attributed to local amplification of tsunami waves in certain regions. About 176 people were killed and 1600 injured in the coastal belt. Further, the tsunami pounded 187 villages affecting nearly 250,000 persons in Kerala. As many as 6,280 dwelling units were completely destroyed, 11,175 were damaged and nearly 84,773 persons were evacuated from the coastal areas and accommodated in 142 relief camps after tsunami. As this tsunami is believed to be first of its kind to have significantly affected the Kerala coast, the post-tsunami field investigations and measurements would give valuable information on various changes brought by the tsunami. Immediately after the tsunami, several organizations have carried out field surveys in many affected areas along the coast. [19]

Geography education in Kerala

Undergraduate and Masters level education is offered in the Universities of Kerala. Research in Geography is carried out in a variety of organizations like Department of Geography, University College, National Centre for Earth Sciences Studies, Kannur University etc.

Related Research Articles

<span class="mw-page-title-main">Geography of India</span> Geography of the country of India

India is situated north of the equator between 8°4' north to 37°6' north latitude and 68°7' east to 97°25' east longitude. It is the seventh-largest country in the world, with a total area of 3,287,263 square kilometres (1,269,219 sq mi). India measures 3,214 km (1,997 mi) from north to south and 2,933 km (1,822 mi) from east to west. It has a land frontier of 15,200 km (9,445 mi) and a coastline of 7,516.6 km (4,671 mi).

<span class="mw-page-title-main">Western Ghats</span> Mountain range along the western coast of India

The Western Ghats or the Western Mountain range is a mountain range that covers an area of 160,000 km2 (62,000 sq mi) in a stretch of 1,600 km (990 mi) parallel to the western coast of the Indian peninsula, traversing the states of Gujarat, Maharashtra, Goa, Karnataka, Kerala and Tamil Nadu. It is a UNESCO World Heritage Site and is one of the 36 biodiversity hotspots in the world. It is sometimes called the Great Escarpment of India. It contains a very large proportion of the country's flora and fauna, many of which are endemic to this region. According to UNESCO, the Western Ghats are older than the Himalayas. They influence Indian monsoon weather patterns by intercepting the rain-laden monsoon winds that sweep in from the south-west during late summer. The range runs north to south along the western edge of the Deccan Plateau and separates the plateau from a narrow coastal plain called Konkan along the Arabian Sea. A total of 39 areas in the Western Ghats, including national parks, wildlife sanctuaries and reserve forests, were designated as world heritage sites in 2012 – twenty in Kerala, ten in Karnataka, six in Tamil Nadu and four in Maharashtra.

<span class="mw-page-title-main">Idukki district</span> District in Kerala, India

Idukki (ഇടുക്കി), IPA: [iɖukːi], is one of the 14 districts in the Indian state of Kerala. Idukki district lies amid the Cardamom Hills of Western Ghats in Kerala. Idukki district contains two municipal towns - Kattappana and Thodupuzha. The district currently includes five taluks in it.

<span class="mw-page-title-main">South Western Ghats moist deciduous forests</span> Ecoregion in India

The South Western Ghats moist deciduous forests is an ecoregion in the Western Ghats of southern India with tropical and subtropical moist broadleaf forests. This biome covers the Nilgiri Hills between elevation of 250 and 1,000 m in Kerala, Karnataka and Tamil Nadu states.

<span class="mw-page-title-main">Cardamom Hills</span> Mountain range in Kerala, India

The Cardamom Hills or Yela Mala are mountain range of southern India and part of the southern Western Ghats located in Idukki district, Kerala, India. Their name comes from the cardamom spice grown in much of the hills' cool elevation, which also supports pepper and coffee. The Western Ghats and Periyar Sub-Cluster including the Cardamom Hills are UNESCO World Heritage Sites.

<span class="mw-page-title-main">Periyar River</span> River in Kerala, India

Periyar, IPA: [peɾijɐːr], 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 Periyar is of utmost significance to the economy of Kerala. It generates a significant proportion of Kerala's electrical power via the Idukki Dam and flows along a region of industrial and commercial activity. The river also provides water for irrigation and domestic use throughout its course besides supporting a rich fishery. Due to these reasons, the river has been named the "Lifeline of Kerala". Kochi city, in the vicinity of the river mouth draws its water supply from Aluva, an upstream site sufficiently free of seawater intrusion. Twenty five percent of Kerala's industries are along the banks of river Periyar. These are mostly crowded within a stretch of 5 kilometres (3 mi) in the Eloor-Edayar region (Udhyogamandal), about 10 kilometres (6 mi) north of Kochi harbor.

<span class="mw-page-title-main">Anaimalai Hills</span> Mountain range in India

The Anamala or Anaimalai, also known as the Elephant Mountains, are a range of mountains in the southern Western Ghats of central Kerala and span the border of western Tamil Nadu in Southern India. The name anamala is derived from the Malayalam word aana and the Tamil word aanai, meaning elephant, or from tribal languages. Mala or Malai means 'hill', and thus 'Elephant hill'.

The term Malabar rainforests refers to one or more distinct ecoregions recognized by biogeographers:

  1. the Malabar Coast moist forests formerly occupied the coastal zone to the 250 metre elevation
  2. the South Western Ghats moist deciduous forests grow at intermediate elevations
  3. the South Western Ghats montane rain forests cover the areas above 1000 metres elevation
<span class="mw-page-title-main">Ghat Roads</span> Access routes into the mountainous Western and Eastern Ghats in India

Ghat Roads are access routes into the mountainous Western and Eastern Ghats, mountain ranges of the Indian subcontinent. These roads are remarkable feats of engineering, and most were constructed during the British Raj. Ghat roads were built to connect to the hill stations established in the mountains for residents to avoid summer heat. They generally served to connect coastal (seaside) areas with the upper Deccan plateau of the Indian subcontinent.

<span class="mw-page-title-main">Lakkidi, Wayanad</span> Village in Kerala, India

Lakkidi is a rain forest located in a gateway of the Wayanad district of the Indian state of Kerala. During British Raj, a horse track in Wayanad attracted European investors and traders. They cultivated Malabar pepper, spices, tea, and coffee. National Highway 766 connects Kozhikode in Kerala with Kollegal in Karnataka via Mysore, creating business opportunities in tourism and agriculture. Lakkidi is surrounded by a biodiverse environment and unspoiled nature which attracts visitors interested in bird-watching, trekking, and off-roading. Jawahar Navodaya Vidyalaya is situated there.

<span class="mw-page-title-main">Natural disasters in India</span> Natural disasters in India

Natural catastrophe in India, many of them related to the climate of India, cause massive losses of life and property. Droughts, flash floods, cyclones, avalanches, landslides brought by torrential rains, and snowstorms pose the greatest threats. A natural disaster might be caused by earthquakes, flooding, volcanic eruption, landslides, hurricanes etc. In order to be classified as a disaster, it will need to have a profound environmental effect and/or human loss and frequently incurs a financial loss. Other dangers include frequent summer dust storms, which usually track from north to south; they cause extensive property damage in North India and deposit large amounts of dust and dirt from arid regions. Hail is also common in parts of India, causing severe damage to standing crops such as rice and wheat and many more crops.

<span class="mw-page-title-main">Geography of South India</span>

The Geography of South India comprises the diverse topological and climatic patterns of South India. South India is a peninsula in the shape of a vast inverted triangle, bounded on the west by the Arabian Sea, on the east by the Bay of Bengal and on the north by the Vindhya and Satpura ranges.

<span class="mw-page-title-main">Geography of Tamil Nadu</span>

Tamil Nadu is the tenth largest state in India and covers an area of 130,058 square kilometres (50,216 sq mi). It is bordered by Kerala to the west, Karnataka to the northwest, Andhra Pradesh to the north, the Bay of Bengal to the east and the Indian Ocean to the south. Cape Comorin (Kanyakumari), the southernmost tip of the Indian Peninsula which is the meeting point of the Arabian Sea, the Bay of Bengal, and the Indian Ocean is located in Tamil Nadu.

<span class="mw-page-title-main">Geography of Thiruvananthapuram</span>

The Indian city of Thiruvananthapuram is located in Thiruvananthapuram district in the state of Kerala. The city is located at 8.5°N 76.9°E on the west coast, near the southern tip of mainland India. The city situated on the west coast of India, and is bounded by Arabian Sea to its west and the Western Ghats to its east. The city and the suburbs spans an area of 250 km2 (96.53 sq mi). The average elevation of the city is 16 ft above sea level. The highest point within the city limits is the observatory. Agastya Mala, which has an elevation of 1,868 metres (6,129 ft) is only about 60 km from the city. The Ponmudi hill station which has an elevation of 1,100 metres (3,609 ft) is also near the city.

Operation Madad is the name of rescue operations conducted by Indian Navy in various occasions within India. The word "madad" in Hindi means "help".

<span class="mw-page-title-main">Malabar Coast</span> Southwestern coast of the Indian subcontinent

The Malabar Coast is the southwestern coast of the Indian subcontinent. Geographically, it comprises the wettest regions of southern India, as the Western Ghats intercept the moisture-laden monsoon rains, especially on their westward-facing mountain slopes. The term is used to refer to the entire Indian coast from the western coast of Konkan to the tip of India at Kanyakumari. The peak of Anamudi, which is also the point of highest altitude in India outside the Himalayas, and Kuttanad, which is the point of least elevation in India, lie on the Malabar Coast. Kuttanad, also known as The Rice Bowl of Kerala, has the lowest altitude in India, and is also one of the few places in the world where cultivation takes place below sea level.

<span class="mw-page-title-main">Geography of Thrissur</span>

The city of Thrissur is situated in the southwest of the South Indian state of Kerala of Thrissur district. A landlocked city, Thrissur is located on a hillock which is surrounded by Thrissur Kole Wetlands. Thrissur district borders with Palakkad district in east, Malappuram district in the north, Ernakulam district in the South and Arabian Sea in the west.

The 2019 Indian floods were a series of floods that affected over thirteen states in late July and early August 2019, due to excessive rains. At least 200 people died and about a million people were displaced. Karnataka and Maharashtra were the most severely affected states. People died but many were rescued with the help of the Indian Navy.

<span class="mw-page-title-main">2020 Kerala floods</span> Indian flood

During the heavy rainfall over the monsoon period from 1 June to 18 August 2020, all 14 districts in Kerala were affected with 104 dead and 40 injured. Five districts in Kerala were flooded on 7 August 2020. Major reported incidents in relation to flooding include a landslide in Idukki district on 6 August, claiming 66 lives and an Air India plane crash that caused the death of 21 people. The 2020 flood in Kerala marked the third year in a row of severe monsoon flooding.

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  22. Kuriakose SL, Jetten VG, van Westen CJ, Sankar G & van Beek LPH, 2008, Pore Water Pressure as a Trigger of Shallow Landslides in the Western Ghats of Kerala, India: Some Preliminary Observations from an Experimental Catchment, Physical Geography 29(4) 374–386 "Pore Water Pressure as a Trigger of Shallow Landslides in the Western Ghats of Kerala, India: Some Preliminary Observations from an Experimental Catchment - Physical Geography - Volume 29, Number 4 / July-August 2008 - Bellwether Publishing, Ltd". Archived from the original on 28 January 2013. Retrieved 13 January 2009., Retrieved on 12 January 2009.
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See also