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70-539: Gangamoola is a part of the Gangamoola-Aroli-Gangrikal range of Western Ghats . Having an altitude of 1458 meters above sea level, the hill is within the boundaries of the Kudremukh National Park . The hill is thickly forested and receives an annual rainfall of 575 cm. The area in the vicinity of the hill is rich in magnetite - quartzite deposits which yield iron ore. Gangamoola is a part of

140-484: A sink , which may be a permanent lake, a dry lake , or a point where surface water is lost underground . Drainage basins are similar but not identical to hydrologic units , which are drainage areas delineated so as to nest into a multi-level hierarchical drainage system . Hydrologic units are defined to allow multiple inlets, outlets, or sinks. In a strict sense, all drainage basins are hydrologic units but not all hydrologic units are drainage basins. About 48.71% of

210-414: A watershed , though in other English-speaking places, "watershed" is used only in its original sense, that of the drainage divide line. A drainage basin's boundaries are determined by watershed delineation , a common task in environmental engineering and science. In a closed drainage basin, or endorheic basin , rather than flowing to the ocean, water converges toward the interior of the basin, known as

280-507: A 2010 report, following is the distribution of faunal species in the Western Ghats apart from more than 6,000 insect species. The Western Ghats region has one of the highest tiger population, estimated at 985 in 2022. The Western Ghats ecoregion has the largest Indian elephant population in the wild, with an estimated 11,000 individuals across eight distinct populations. Other mammals include endangered and vulnerable species such as

350-408: A 2014 report, at least 227 species of reptiles are found in the Western Ghats. The major population of the snake family Uropeltidae is restricted to the region. Several endemic reptile genera and species occur here, with the region having a significant population of mugger crocodiles . The amphibians of the Western Ghats are diverse and unique, with a high proportion of species being endemic to

420-449: A drainage basin, and there are different ways to interpret that data. In the unlikely event that the gauges are many and evenly distributed over an area of uniform precipitation, using the arithmetic mean method will give good results. In the Thiessen polygon method, the drainage basin is divided into polygons with the rain gauge in the middle of each polygon assumed to be representative for

490-540: A drainage boundary is referred to as watershed delineation . Finding the area and extent of a drainage basin is an important step in many areas of science and engineering. Most of the water that discharges from the basin outlet originated as precipitation falling on the basin. A portion of the water that enters the groundwater system beneath the drainage basin may flow towards the outlet of another drainage basin because groundwater flow directions do not always match those of their overlying drainage network. Measurement of

560-450: A large number of different species of flora and fauna, most of which are endemic to this region. At least 325 globally threatened species occur in the Western Ghats. The region was declared as a UNESCO World Heritage Site in 2012. The name Western Ghats derives from the word ghat and the cardinal direction in which it is located with respect to the Indian mainland. Ghat , a term used in

630-564: A single point, such as a river mouth , or flows into another body of water , such as a lake or ocean . A basin is separated from adjacent basins by a perimeter, the drainage divide , made up of a succession of elevated features, such as ridges and hills . A basin may consist of smaller basins that merge at river confluences , forming a hierarchical pattern . Other terms for a drainage basin are catchment area , catchment basin , drainage area , river basin , water basin , and impluvium . In North America, they are commonly called

700-464: A unique type of stunted tropical montane forest found in the valleys between the mountains. Earlier sources indicated about four to five thousand vascular plant species of which nearly one-third was endemic to the region. Later studies and publications have recorded 7,402 species of flowering plants occurring in the Western Ghats of which 5,588 were described as indigenous, 376 are naturalized exotics, and 1,438 species are cultivated or planted. Among

770-618: Is around 1,200 m (3,900 ft). The Western Ghats form one of the major watersheds of India, feeding many perennial river systems that drain almost 40% of the land area of the country. Because of the higher elevation of the Deccan plateau on the west, most rivers flow from eastwards towards the Bay of Bengal , resulting in chiselled eastern slopes and steeper western slopes facing the Arabian Sea . The Western Ghats play an important role in determining

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840-480: Is referred to as " watershed management ". In Brazil , the National Policy of Water Resources, regulated by Act n° 9.433 of 1997, establishes the drainage basin as the territorial division of Brazilian water management. When a river basin crosses at least one political border, either a border within a nation or an international boundary, it is identified as a transboundary river . Management of such basins becomes

910-600: Is the Dead Sea . Drainage basins have been historically important for determining territorial boundaries, particularly in regions where trade by water has been important. For example, the English crown gave the Hudson's Bay Company a monopoly on the fur trade in the entire Hudson Bay basin, an area called Rupert's Land . Bioregional political organization today includes agreements of states (e.g., international treaties and, within

980-601: Is the origin of three rivers, Tunga, Bhadra and Netravathi. From its origin, the Tunga flows in a north-easterly direction passing the towns of Sringeri , Thirthahalli and Shimoga . A dam has been constructed across it at Gajanur . After covering a total distance of 147 km, it joins the Bhadra at Koodli near Shivamogga and forms the Tungabhadra river. From its origin, the Bhadra river first flows east and then north-east passing

1050-682: The African Great Lakes , the interiors of Australia and the Arabian Peninsula , and parts in Mexico and the Andes . Some of these, such as the Great Basin, are not single drainage basins but collections of separate, adjacent closed basins. In endorheic bodies of water where evaporation is the primary means of water loss, the water is typically more saline than the oceans. An extreme example of this

1120-792: The Continental Divide , northern Alaska and parts of North Dakota , South Dakota , Minnesota , and Montana in the United States, the north shore of the Scandinavian peninsula in Europe, central and northern Russia, and parts of Kazakhstan and Mongolia in Asia , which totals to about 17% of the world's land. Just over 13% of the land in the world drains to the Pacific Ocean . Its basin includes much of China, eastern and southeastern Russia, Japan,

1190-614: The Cyprinids (72 species), hillstream loaches (34 species; including stone loaches , now regarded a separate family), Bagrid catfishes (19 species), and Sisorid catfishes (12 species). The region is home to several ornamental fishes like the Denison (or red line torpedo) barb , melon barb , several species of Dawkinsia barbs, zebra loach , Horabagrus catfish, dwarf pufferfish and dwarf Malabar pufferfish . The rivers are also home to Osteobrama bakeri , and larger species such as

1260-477: The Eastern Ghats at Nilgiris before continuing south. The Western Ghats have many peaks that rise above 2,000 m (6,600 ft), with Anamudi (2,695 m (8,842 ft)) being the highest peak. The Western Ghats form one of the major watersheds of India, feeding many perennial rivers. These major river systems drain almost 40% of the land area of the country. The major river systems originating in

1330-749: The Indian subcontinent , depending on the context, could either refer to a range of stepped hills such as the Eastern Ghats and Western Ghats, or a series of steps leading down to a body of water or wharf . As per linguist Thomas Burrow , the word Ghat was derived from similar words used in various Dravidian languages such as kattu (mountain side, ridge, or dam) in Tamil , katte (dam), gatta (mountain), and gattu (bank or shore) in Kannada , and katta (dam), and gatte (shore or embankment) in Telugu . The ancient name for

1400-461: The Indomalayan realm , with the northern portion of the range generally drier than the southern portion. These include the following: Other types of ecosystems include dry deciduous forests on the leeward rain shadow region, scrub forests at the foothills, peat bogs , and swamps . Montane grasslands are found in high altitude locations in the south Western Ghats interspersed with sholas ,

1470-681: The Korean Peninsula , most of Indochina, Indonesia and Malaysia, the Philippines, all of the Pacific Islands , the northeast coast of Australia , and Canada and the United States west of the Continental Divide (including most of Alaska), as well as western Central America and South America west of the Andes. The Indian Ocean 's drainage basin also comprises about 13% of Earth's land. It drains

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1540-535: The Kudremukh biodiversity sub-cluster of the Western Ghats which has been nominated to receive the designation of a World Heritage Site by UNESCO . A survey conducted by the ornithologist Davidar in 1980 recorded 107 species of birds in the Kudremukh-Aroli-Gangamoola tract. The presence of a large number of bird species is due to trees like Myristica dactyloides that are favoured by birds. Gangamoola

1610-662: The Malabar snakehead , and Malabar mahseer . A few are adapted to an underground life, including some Rakthamichthys swamp eels, and the catfish Horaglanis and Kryptoglanis . 97 freshwater fish species were considered threatened in 2011, including 12 critically endangered, 54 endangered, and 31 vulnerable. The reservoirs in the region are important for their commercial and sport fisheries of rainbow trout , mahseer , and common carp . There are more than 200 freshwater fish species including 35 also known from brackish or marine water. Several new species have been described from

1680-448: The crimson-backed sunbird . There is a higher fish species richness in the southern part of the Western Ghats. There are 13 genera entirely restricted to the Western Ghats ( Betadevario , Dayella , Haludaria , Horabagrus , Horalabiosa , Hypselobarbus , Indoreonectes , Lepidopygopsis , Longischistura , Mesonoemacheilus , Parapsilorhynchus , Rohtee , and Travancoria ). The most species-rich families are

1750-431: The lion-tailed macaque , Nilgiri tahr , leopard , Nilgiri langur , dhole , and gaur . The endemic Nilgiri tahr, which was on the brink of extinction, has recovered and had an estimated 3,122 individuals in 2015. Smaller endemic species include the Malabar large-spotted civet , Nilgiri marten , brown palm civet , stripe-necked mongoose , Indian brown mongoose , small Indian civet , and leopard cat . As per

1820-447: The tropical rainforests of India . New frog species have continued to be discovered in the 21st century. Frogs of the genera Micrixalus , Indirana , and Nyctibatrachus , toads like Pedostibes , Ghatophryne , and Xanthophryne , arboreal frogs like Ghatixalus , Mercurana , and Beddomixalus , and microhylids like Melanobatrachus are endemic to this region. There are at least 19 species of birds endemic to

1890-567: The western coast of the Indian peninsula . Covering an area of 160,000 km (62,000 sq mi), it traverses the states of Gujarat , Maharashtra , Goa , Karnataka , Kerala , and Tamil Nadu . The range forms an almost continuous chain of mountains along the western edge of the Deccan Plateau , from the Tapti River to Swamithoppe in Kanyakumari district at the southern tip of

1960-492: The 334 Western Ghats butterfly species, 316 species have been reported to occur in the Nilgiri Biosphere Reserve . The Western Ghats are home to 174 species of odonates (107 dragonflies and 67 damselflies ), including 69 endemics. Most of the endemic odonate are closely associated with rivers and streams, while the non-endemics are typically generalists . There are several species of leeches found all along

2030-525: The Arabian Sea is known as the Western Coastal Plains . The mountains can be roughly divided into three parts: the northern section with an elevation ranging from 900–1,500 m (3,000–4,900 ft), the middle section starting from the south of Goa with a lower elevation of less than 900 m (3,000 ft), and the southern section where the altitude rises again. The Western Ghats meet with

2100-494: The Indian peninsula. The Western Ghats meet with the Eastern Ghats at Nilgiris before continuing south. Geologic evidence indicates that the mountains were formed during the break-up of the supercontinent of Gondwana . The mountains came along the west coast of India somewhere in the late Jurassic and early Cretaceous periods when India separated from the African continent. The mountains can be roughly divided into three parts:

2170-598: The US, interstate compacts ) or other political entities in a particular drainage basin to manage the body or bodies of water into which it drains. Examples of such interstate compacts are the Great Lakes Commission and the Tahoe Regional Planning Agency . In hydrology , the drainage basin is a logical unit of focus for studying the movement of water within the hydrological cycle . The process of finding

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2240-518: The Western Ghats are the Godavari , Kaveri , and Krishna . Most rivers flow eastwards towards the Bay of Bengal owing to the steeper gradient moving from east to west, and many smaller streams drain the region, often carrying a large volume of water during the monsoon months. The streams and rivers give rise to numerous waterfalls in the region. The rivers have been dammed for hydroelectric and irrigation purposes, with major reservoirs spread across

2310-510: The Western Ghats including the endangered rufous-breasted laughingthrush , the vulnerable Nilgiri wood-pigeon , white-bellied shortwing , and broad-tailed grassbird , the near threatened grey-breasted laughingthrush , black-and-rufous flycatcher , Nilgiri flycatcher , and Nilgiri pipit , and the least concern Malabar (blue-winged) parakeet , Malabar grey hornbill , white-bellied treepie , grey-headed bulbul , rufous babbler , Wayanad laughingthrush , white-bellied blue-flycatcher , and

2380-852: The Western Ghats were severely fragmented due to clear-felling for plantations. The introduction of non-native species threatened the rare endemic species and habitat specialists, which depleted faster than other species. Complex and species-rich habitats like the tropical rainforests are much more adversely affected than other habitats. The primary threats to fauna were not only from habitat loss , but also from overexploitation , illicit grazing , mining , poaching , and introduced species . The Government of India has established many protected areas , including two biosphere reserves , 13 national parks to restrict human access, several wildlife sanctuaries to protect specific endangered species, and many reserve forests . The Nilgiri Biosphere Reserve , comprising 5,500 km (2,100 sq mi) of

2450-559: The Western Ghats, but the actual number is likely higher. This includes 28 endemics. Among the threatened freshwater molluscs are the mussel species Pseudomulleria dalyi , which is a Gondwanan relict, and the snail Cremnoconchus , which is restricted to the spray zone of waterfalls. According to the IUCN, four species of freshwater molluscs are considered endangered and three are vulnerable. An additional 19 species are considered data deficient. There are roughly 6,000 insect species. Of

2520-443: The Western Ghats. Historically, the Western Ghats were covered in dense forests. which formed the natural habitat for wildlife along with the native tribal people . Its inaccessibility made it difficult for people from the plains to cultivate the land and build settlements. After the establishment of British colonial rule in the region, large swathes of territory were cleared for agricultural plantations and timber. The forests in

2590-406: The basin, it can form tributaries that change the structure of the land. There are three different main types, which are affected by the rocks and ground underneath. Rock that is quick to erode forms dendritic patterns, and these are seen most often. The two other types of patterns that form are trellis patterns and rectangular patterns. Rain gauge data is used to measure total precipitation over

2660-464: The climate and seasons in India. It blocks the rain-bearing monsoon winds flowing eastward from the Arabian Sea, resulting in rainfall along the western coast. By the time the air rises above the mountains, it becomes dry, forming a rain shadow region with very little rainfall on the leeward side towards the interior of the Deccan plateau. The Western Ghats region is a biodiversity hotspot . It contains

2730-430: The discharge of water from a basin may be made by a stream gauge located at the basin's outlet. Depending on the conditions of the drainage basin, as rainfall occurs some of it seeps directly into the ground. This water will either remain underground, slowly making its way downhill and eventually reaching the basin, or it will permeate deeper into the soil and consolidate into groundwater aquifers. As water flows through

2800-441: The drainage area is dependent on the soil type. Certain soil types such as sandy soils are very free-draining, and rainfall on sandy soil is likely to be absorbed by the ground. However, soils containing clay can be almost impermeable and therefore rainfall on clay soils will run off and contribute to flood volumes. After prolonged rainfall even free-draining soils can become saturated , meaning that any further rainfall will reach

2870-692: The drainage basin to the mouth, and may accumulate there, disturbing the natural mineral balance. This can cause eutrophication where plant growth is accelerated by the additional material. Because drainage basins are coherent entities in a hydrological sense, it has become common to manage water resources on the basis of individual basins. In the U.S. state of Minnesota , governmental entities that perform this function are called " watershed districts ". In New Zealand, they are called catchment boards. Comparable community groups based in Ontario, Canada, are called conservation authorities . In North America, this function

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2940-773: The eastern coast of Africa, the coasts of the Red Sea and the Persian Gulf , the Indian subcontinent , Burma, and most parts of Australia . The five largest river basins (by area), from largest to smallest, are those of the Amazon (7 million km ), the Congo (4 million km ), the Nile (3.4 million km ), the Mississippi (3.22 million km ), and the Río de la Plata (3.17 million km ). The three rivers that drain

3010-458: The equator receive lower annual rainfall and have rain spells lasting several months in a year. The Western Ghats region is a biodiversity hotspot . It consists of nearly 30% of all the species of flora and fauna found in India, most of which are endemic to this region. At least 325 globally threatened species occur in the Western Ghats. The Western Ghats consist of four tropical and subtropical moist broadleaf terrestrial ecoregions of

3080-638: The forests, forms the largest contiguous protected area in the Western Ghats. In August 2011, the Western Ghats Ecology Expert Panel (WGEEP), appointed by the Union Ministry of Environment and Forests to assess the biodiversity and environmental issues of the Western Ghats, designated the entire region as an Ecologically Sensitive Area (ESA) and assigned three levels of Ecological Sensitivity to its different regions. Subsequent committees formed have recommended various suggestions to protect

3150-567: The greatest portion of western Sub-Saharan Africa , as well as Western Sahara and part of Morocco . The two major mediterranean seas of the world also flow to the Atlantic. The Caribbean Sea and Gulf of Mexico basin includes most of the U.S. interior between the Appalachian and Rocky Mountains , a small part of the Canadian provinces of Alberta and Saskatchewan , eastern Central America ,

3220-435: The ground and along rivers it can pick up nutrients , sediment , and pollutants . With the water, they are transported towards the outlet of the basin, and can affect the ecological processes along the way as well as in the receiving water body . Modern use of artificial fertilizers , containing nitrogen (as nitrates ), phosphorus , and potassium , has affected the mouths of drainage basins. The minerals are carried by

3290-744: The ground at its terminus, the area can go by several names, such playa, salt flat, dry lake , or alkali sink . The largest endorheic basins are in Central Asia , including the Caspian Sea , the Aral Sea , and numerous smaller lakes. Other endorheic regions include the Great Basin in the United States, much of the Sahara Desert , the drainage basin of the Okavango River ( Kalahari Basin ), highlands near

3360-555: The indigenous species, 2,253 species are endemic to India and of them, 1,273 species are exclusively confined to the Western Ghats. 645 tree species were recorded with a high endemic ratio of 56%. There are 850 – 1000 species of bryophytes including 682 species of mosses (28% endemic) and 280 species of liverworts (43% endemic), 277 species of pteridophytes and 949 species of lichens (26.7% endemic). The Western Ghats are home to thousands of species of fauna, including at least 325 globally threatened species . As per

3430-619: The islands of the Caribbean and the Gulf, and a small part of northern South America. The Mediterranean Sea basin, with the Black Sea , includes much of North Africa , east-central Africa (through the Nile River ), Southern , Central, and Eastern Europe , Turkey , and the coastal areas of Israel , Lebanon , and Syria . The Arctic Ocean drains most of Western Canada and Northern Canada east of

3500-544: The majority of the rainfall to the plains up north. Climate in the mountains shows variations with altitude across the range. Due to its physical proximity to the equator and the Arabian Sea, the region experiences a warm and humid tropical climate throughout the year. Mean temperatures range from 20 °C (68 °F) in the south to 24 °C (75 °F) in the north. Subtropical or temperate climates, and occasional near-zero temperatures during winter are experienced in regions with higher elevations. The coldest period in

3570-504: The mining was disturbing the sensitive ecological balance in the region and also polluting the rivers, mainly the river Bhadra. The Supreme Court of India gave a ruling that the company should stop its mining operations and, in accordance with that decision, the mining was stopped on 31 December 2005. Western Ghats The Western Ghats , also known as the Sahyadri , is a mountain range that stretches 1,600 km (990 mi) along

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3640-506: The most water, from most to least, are the Amazon, Ganges , and Congo rivers. Endorheic basin are inland basins that do not drain to an ocean. Endorheic basins cover around 18% of the Earth's land. Some endorheic basins drain to an Endorheic lake or Inland sea . Many of these lakes are ephemeral or vary dramatically in size depending on climate and inflow. If water evaporates or infiltrates into

3710-467: The mountain range is Sahyadri , derived from Sanskrit , meaning benevolent or tolerant mountain. The Western Ghats are the mountainous faulted , and eroded edge of the Deccan Plateau . Geologic evidence indicates that they were formed during the break-up of the super-continent of Gondwana . After the break-up, the Deccan plateau was formed by basalt rocks, which caused the western side to rise at an elevation. Geophysical evidence indicates that

3780-438: The mountains came along the west coast of India somewhere in the late Jurassic and early Cretaceous periods when India separated from the African continent. Several faults triggered the formation of Western Ghats, then interspersed with valleys and river gorges. Because of the elevation of the Deccan plateau on the west, most rivers flow from west to east, resulting in chiselled eastern slopes and steeper western slopes facing

3850-437: The northern section with an elevation ranging from 900–1,500 m (3,000–4,900 ft), the middle section starting from the south of Goa with a lower elevation of less than 900 m (3,000 ft), and the southern section where the altitude rises again. The Western Ghats have several peaks that rise above 2,000 m (6,600 ft), with Anamudi (2,695 m (8,842 ft)) being the highest peak. The average elevation

3920-418: The rainfall on the area of land included in its polygon. These polygons are made by drawing lines between gauges, then making perpendicular bisectors of those lines form the polygons. The isohyetal method involves contours of equal precipitation are drawn over the gauges on a map. Calculating the area between these curves and adding up the volume of water is time-consuming. Isochrone maps can be used to show

3990-409: The region are the wettest monsoon period in the southern part of the mountain range. Annual rainfall in this region averages 100 cm (39 in) to 900 cm (350 in), with an average rainfall of 250 cm (98 in). The total amount of rain does not depend on the spread of the area; areas in northern Maharashtra receive heavy rainfall followed by long dry spells, while regions closer to

4060-428: The region since the last decade (e.g., Dario urops and S. sharavathiensis ). Seasonal rainfall patterns in the Western Ghats necessitate a period of dormancy for its land snails , resulting in their high abundance and diversity, including at least 258 species of gastropods from 57 genera and 24 families. A total of 77 species of freshwater molluscs (52 gastropods and 25 bivalves ) have been recorded from

4130-416: The region. The Western Ghats play an important role in determining the climate and seasons in India. During the dry summer months of April – May, heat builds up on the land, which draws air from the sea. The air, which picks up moisture along the way and flows eastward from the Arabian Sea, is blocked by the Western Ghats. The rising air cools and brings about orographic precipitation along

4200-579: The region. In 2006, India applied to the UNESCO Man and the Biosphere Programme (MAB) for the Western Ghats to be listed as a protected World Heritage Site . In 2012, 39 sites divided into seven clusters across the Western Ghats, were declared as World Heritage Sites. [REDACTED] Media related to Western Ghats at Wikimedia Commons Drainage basin A drainage basin is an area of land in which all flowing surface water converges to

4270-625: The responsibility of the countries sharing it. Nile Basin Initiative , OMVS for Senegal River , Mekong River Commission are a few examples of arrangements involving management of shared river basins. Management of shared drainage basins is also seen as a way to build lasting peaceful relationships among countries. The catchment is the most significant factor determining the amount or likelihood of flooding . Catchment factors are: topography , shape, size, soil type, and land use (paved or roofed areas). Catchment topography and shape determine

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4340-461: The river rather than being absorbed by the ground. If the surface is impermeable the precipitation will create surface run-off which will lead to higher risk of flooding; if the ground is permeable, the precipitation will infiltrate the soil. Land use can contribute to the volume of water reaching the river, in a similar way to clay soils. For example, rainfall on roofs, pavements , and roads will be collected by rivers with almost no absorption into

4410-665: The sea. The Western Ghats extend from the Satpura Range south of the Tapti River in the north and runs approximately 1,600 km (990 mi) to the southern tip of the Indian peninsula, where it ends at the Marunthuvazh Malai at Swamithoppe in Kanyakumari district . It covers an area of 160,000 km (62,000 sq mi), traversing across the Indian states of Gujarat , Maharashtra , Goa , Karnataka , Kerala , and Tamil Nadu . The Western Ghats form an almost continuous chain of mountains running parallel to

4480-418: The speed with which the runoff reaches a river. A long thin catchment will take longer to drain than a circular catchment. Size will help determine the amount of water reaching the river, as the larger the catchment the greater the potential for flooding. It is also determined on the basis of length and width of the drainage basin. Soil type will help determine how much water reaches the river. The runoff from

4550-415: The time taken for rain to reach the river, while catchment size, soil type, and development determine the amount of water to reach the river. Generally, topography plays a big part in how fast runoff will reach a river. Rain that falls in steep mountainous areas will reach the primary river in the drainage basin faster than flat or lightly sloping areas (e.g., > 1% gradient). Shape will contribute to

4620-477: The time taken for runoff water within a drainage basin to reach a lake, reservoir or outlet, assuming constant and uniform effective rainfall. Drainage basins are the principal hydrologic unit considered in fluvial geomorphology . A drainage basin is the source for water and sediment that moves from higher elevation through the river system to lower elevations as they reshape the channel forms. Drainage basins are important in ecology . As water flows over

4690-562: The town of Bhadravathi . After travelling a distance of 178 km, it joins the Tunga at Koodli. From its origin, the Netravathi flows west, passing the towns of Dharmasthala and Mangalore before joining the Arabian Sea . Iron ore was being mined in this area by the Kudremukh Iron Ore Company Ltd (KIOCL) despite the area being part of a national park . Environmentalists raised concerns about this, since they felt that

4760-399: The western coast of India along the Arabian Sea . The average elevation is around 1,200 m (3,900 ft). There are three gaps in the mountain range: the northernmost Goa Gap , formed 65–80 million years ago (Mya), the oldest and widest  Palghat Gap , formed 500 Mya, and the southernmost, narrowest  Shencottah Gap . The narrow coastal plain between the Western Ghats and

4830-503: The western coast. This signifies the onset of the monsoon season in June. By the time the air rises above the mountains, it becomes dry, resulting in a rain shadow region with very little rainfall on the leeward side towards the interior of the Deccan plateau. The monsoon winds rounding up the peninsula and moving from the east from the Bay of Bengal pass over the Eastern Ghats and bring

4900-641: The world's land drains to the Atlantic Ocean . In North America , surface water drains to the Atlantic via the Saint Lawrence River and Great Lakes basins, the Eastern Seaboard of the United States, the Canadian Maritimes , and most of Newfoundland and Labrador . Nearly all of South America east of the Andes also drains to the Atlantic, as does most of Western and Central Europe and

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