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The CHOTA NAGPUR PLATEAU is a plateau in eastern India, which covers much of Jharkhand
Jharkhand
state as well as adjacent parts of Odisha
Odisha
, West Bengal , Bihar
Bihar
and Chhattisgarh . The Indo-Gangetic plain
Indo-Gangetic plain
lies to the north and east of the plateau, and the basin of the Mahanadi
Mahanadi
River lies to the south. The total area of the Chota Plateau
Plateau
is approximately 65,000 square kilometres (25,000 sq mi).

CONTENTS

* 1 Etymology * 2 Formation

* 3 Divisions

* 3.1 Pat region * 3.2 Ranchi plateau * 3.3 Hazaribagh plateau * 3.4 Koderma plateau * 3.5 Damodar trough * 3.6 Palamu * 3.7 Manbhum-Singhbhum

* 4 Climate

* 5 Ecology

* 5.1 Protected areas

* 6 Minerals * 7 See also * 8 References * 9 Further reading * 10 External links

ETYMOLOGY

The name Nagpur is probably taken from Nagavanshis , who ruled in this part of the country. Chota is a corruption of the word small, a village in the outskirts of Ranchi , which has the remains of an old fort belonging to the Nagavanshis .

FORMATION

The Damodar River
Damodar River
flows through Chota Nagpur Plateau
Plateau

The Chota Nagpur Plateau
Plateau
is a continental plateau—an extensive area of land thrust above the general land. The plateau has been formed by continental uplift from forces acting deep inside the earth. The Gondwana
Gondwana
substrates attest to the plateau's ancient origin. It is part of the Deccan Plate, which broke free from the southern continent during the Cretaceous
Cretaceous
to embark on a 50-million-year journey that was violently interrupted by the northern Eurasian continent. The northeastern part of the Deccan Plateau
Plateau
, where this ecoregion sits, was the first area of contact with Eurasia.

DIVISIONS

The Chota Nagpur Plateau
Plateau
consists of three steps. The highest step is in the western part of the plateau, where pats, as a plateau is locally called, are 910 to 1,070 metres (3,000 to 3,500 ft) above sea level. The highest point is 1,164 metres (3,819 ft). The next part contains larger portions of the old Ranchi and Hazaribagh districts and some parts of old Palamu district, before these were broken up into smaller administrative units. The general height is 610 metres (2,000 ft). The topography in undulating with prominent gneissic hills, often dome-like in outline. The lowest step of the plateau is at an average level of around 300 metres (1,000 ft). It covers the old Manbhum and Singhbhum districts. High hills are a striking part of this section - Parasnath Hills rise to a height of 1,370 metres (4,480 ft) and Dalma Hills to 1,038 metres (3,407 ft). The large plateau is subdivided into several small plateaux or sub plateaux.

PAT REGION

The western plateau with an average elevation of 1,000 metres (3,300 ft) above mean sea level merges into the plateau of Surguja district of Chhattisgarh. The flat topped plateaux, locally known as pats are characterized by level surface and accordance of their summit levels shows they are part of one large plateau. Examples include Netarhat Pat, Jamira Pat, Khamar Pat, Rudni Pat etc. The area is also referred to as Western Ranchi Plateau. It is believed to be composed of Deccan lava.

RANCHI PLATEAU

Dassam falls in the plateau

It is the largest part of the Chota Nagpur Plateau. The elevation of the plateau land in this part is about 700 m (2,300 ft) and gradually slopes down towards south-east into the hilly and undulating region of Singhbhum (earlier Singhbhum district or what is now Kolhan division ). The plateau is highly dissected. Damodar River
Damodar River
originates here and flows through a rift valley. To the north it is separated from the Hazaribagh plateau by the Damodar trough. To the west is a group of plateaux called pat

There are many waterfalls at the edges of Ranchi plateau where rivers coming from over the plateau surface form waterfalls when they descend through the precipitous escarpments of the plateau and enter the area of significantly lower height. The North Karo River has formed a 17 m (56 ft) high Pheruaghaugh Falls at the southern margin of Ranchi plateau. Such falls are called scarp falls. Hundru Falls (75 m) on Subarnarekha River near Ranchi, Dassam Falls
Dassam Falls
(39.62 m) on Kanchi River, east of Ranchi, Sadni Falls (60 m) on Sankh River (Ranchi plateau) are examples of scarp falls. Sometimes waterfalls of various dimensions are formed when tributary streams join the master stream from great height forming hanging valleys. At Rajrappa (10 m), the Bhera river coming over from the Ranchi plateau hangs above the Damodar River
Damodar River
at its point of confluence with the latter. The Jonha Falls (25.9 m) is another example of this category of falls. In fact the Gunga River hangs over its master stream, Raru River (to the east of Ranchi city) and forms the said falls.

HAZARIBAGH PLATEAU

The Hazaribagh plateau is often subdivided into two parts – the higher plateau and the lower plateau. Here the higher plateau is referred to as Hazaribagh plateau and the lower plateau as Koderma plateau. The Hazaribagh plateau on which Hazaribagh town is built is about 64 km (40 mi) east by west and 24 km (15 mi) north by south with an average elevation of 610 m (2,000 ft). The north-eastern and southern faces are mostly abrupt; but to the west it narrows and descends slowly in the neighbourhood.of Simaria and Jabra where it curves to the south and connects with the Ranchi Plateau
Plateau
through Tori pargana. It is generally separated from the Ranchi plateau by the Damodar trough.

The western portion of Hazaribagh plateau constitutes a broad watershed between the Damodar drainage on the south and the Lilajan and Mohana rivers on the north. The highest hills in this area are called after the villages of Kasiatu, Hesatu and Hudu, and rise fronting the south 180 m (600 ft) above the general level of the plateau. Further east along the southern face a long spur projects right up to the Damodar river where it ends in Aswa Pahar, elevation 751 metres (2,465 ft). At the south-eastern corner of the plateau is Jilinga Hill at 932 metres (3,057 ft). Mahabar Jarimo at 666 m (2,185 ft) and Barsot at 660 m (2,180 ft) stand in isolation to the east, and on the north-west edge of the plateau Sendraili at 670 m (2,210 ft) and Mahuda at 734 m (2,409 ft) are the most prominent features. Isolated on the plateau, in the neighbourhood of Hazaribagh town are four hills of which the highest Chendwar rises to 860 m (2,810 ft). On all sides it has an exceedingly abrupt scarp, modified only on the south-east. In the south it falls almost sheer in a swoop of 670 m (2,200 ft) to the bed of Bokaro River , below Jilinga Hill. Seen from the north the edge of this plateau has the appearance of a range of hills, at the foot of which (on the Koderma plateau) runs the Grand Trunk Road and NH 2 (new NH19 ).

KODERMA PLATEAU

The Koderma plateau is also referred to as the Hazaribagh lower plateau or as the Chauparan-Koderma-Girighi sub-plateau.

The northern face of the Koderma plateau, elevated above the plains of Bihar, has the appearance of a range of hills, but in reality it is the edge of a plateau, 240 metres (800 ft) from the level of the Gaya plain. Eastward this northern edge forms a well-defined watershed between heads of the tributaries of Gaya and those of the Barakar River , which traverses the Koderma and Giridih districts in an easterly direction. The slope of this plateau to the east is uniform and gentle and is continued past the river, which bears to the south-east, into the Santhal Parganas and gradually disappears in the lower plains of Bengal. The western boundary of the plateau is formed by the deep bed of the Lilajan River .The southern boundary consists of the face of the higher plateau, as far as its eastern extremity, where for some distance a low and undistinguished watershed runs eastward to the western spurs of Parasnath Hills . The drainage to the south of this low line passes by the Jamunia River to the Damodar.

DAMODAR TROUGH

The Damodar basin forms a trough between the Ranchi and Hazaribagh plateaux resulting from enormous fractures at their present edges, which caused the land between to sink to a great depth and incidentally preserved from denudation the Karanpura, Ramgarh and Bokaro coalfields. The northern boundary of the Damodar valley is steep as far as the south eastern corner of the Hazaribagh plateau. On the south of the trough the Damodar keeps close to the edge of the Ranchi plateau till it has passed Ramgarh, after which a turn to the north-east leaves on the right hand a wide and level valley on which the Subarnarekha begins to intrude, south of Gola till the Singhpur Hills divert it to the south. Further to the east the Damodar River passes tamely into the Manbhum sector of lowest step of the Chotanagpur plateau.

PALAMU

The Palamu division generally lies at a lower height than the surrounding areas of Chota Nagpur Plateau. On the east the Ranchi plateau intrudes into the division and the southern part of the division merges with the Pat region. On the west are the Surguja highlands of Chhattishgarh and Sonbhadra district of Uttar Pradesh. The Son River touches the north-western corner of the division and then forms the state boundary for about 72 kilometres (45 mi). The general system of the area is a series of parallel ranges of hills running east and west through which the North Koel River passes. The hills in the south are the highest in the area, and the picturesque and isolated cup-like Chhechhari valley is surrounded by lofty hills on every side. Lodh Falls drops from a height of 150 metres (490 ft) from these hills, making it the highest waterfall on the Chota Nagpur Plateau. Netarhat and Pakripat plateaux are physiographically part of the Pat region.

MANBHUM-SINGHBHUM

Joychandi Pahar in Purulia district
Purulia district
in West Bengal
West Bengal

In the lowest step of the Chota Nagpur Plateau, the Manbhum area covers the present Purulia district
Purulia district
in West Bengal
West Bengal
, and Dhanbad district and parts of Bokaro district in Jharkhand, and the Singhbhum area broadly covers Kolhan division of Jharkhand. The Manbhum area has a general elevation of about 300 metres (1,000 ft) and it consists of undulating land with scattered hills – Baghmundi and Ajodhya range, Panchakot and the hills around Jhalda are the prominent ones. Adjacent Bankura district
Bankura district
of West Bengal
West Bengal
has been described as the “connecting link between the plains of Bengal on the east and Chota Nagpur plateau on the west.” The same could be said of the Asansol and Durgapur subdivisions of Bardhaman district
Bardhaman district
.Recently a website launched for chotonagpur Manbhum-Singhbhum region specially with the mission to save wildlife and conserve the forest in plateau. Visit chotonagpurplateau.in for a detail information and articles.

The Singhbhum area contains much more hilly and broken country. The whole of the western part is a mass of hill ranges rising to 910 metres (3,000 ft) in the south-west. Jamshedpur sits on an open plateau, 120 to 240 metres (400 to 800 ft) above mean sea level, with a higher plateau to the south of it. The eastern part is mostly hilly, though near the borders of West Bengal
West Bengal
it flattens out into an alluvial plain. In the Singhbhum area, there are hills alternating with valleys, steep mountains, deep forests on the mountain slopes, and, in the river basins, some stretches of comparatively level or undulating country. The centre of the area consists of an upland plateau enclosed by hill ranges. This strip, extending from the Subarnarekha River on the east to the Angarbira range to the west of Chaibasa, is a very fertile area. Saranda forest is reputed to have the best Sal forests in Asia.

CLIMATE

The Chota Nagpur Plateau
Plateau
has an attractive climate. For five to six months of the year, from October onward the days are sunny and bracing. The mean temperature in December is 23 °C (73 °F). The nights are cool and temperatures in winter may drop below freezing point in many places. In April and May the day temperature may cross 38 °C (100 °F) but it is very dry and not sultry as in the adjacent plains. The rainy season (June to September) is pleasant. The Chota Nagpur Plateau
Plateau
receives an annual average rainfall of around 1,400 millimetres (55 in), which is less than the rainforested areas of much of India
India
and almost all of it in the monsoon months between June and August.

ECOLOGY

Sal trees (Shorea robusta) are found in forests of Chota Nagpur Plateau
Plateau

The Chota Nagpur dry deciduous forests, a tropical and subtropical dry broadleaf forests ecoregion , encompasses the plateau. The ecoregion has an area of 122,100 square kilometres (47,100 sq mi), covering most of Jharkhand
Jharkhand
state and adjacent portions of Odisha, West Bengal, Bihar, Chhattisgarh, Uttar Pradesh, and Madhya Pradesh.

The ecoregion is drier than surrounding ones, including the Eastern Highlands moist deciduous forests that covers the Eastern Ghats
Eastern Ghats
and Satpura Range to the south, and the Lower Gangetic Plains moist deciduous forests in the lowlands to the east and north.

The plateau is covered with a variety of different habitats of which Sal forest is predominant. The plateau is home to the Palamau Tiger Reserve and other large blocks of natural habitat which are among the few remaining refuges left in India
India
for large populations of tiger and Asian elephants .

Forests range from dry to wet and reach up to 25 metres (82 ft) tall. The plateau is also swampy in some places and in other parts is covered with bamboo grasslands and shrubs such as Holarrhena and Dodonaea . The flora of the plateau is distinct from the wetter parts of India
India
that surround it and includes a number of endemic plants such as Aglaia haslettiana and endangered plant species including Madhuca longifolia and Butea monosperma
Butea monosperma
.

Tigers, Asian elephants, four-horned antelope (Tetracerus quadricornis), blackbuck (Antilope cervicapra), chinkara (Gazella bennettii), dhole wild dog (Cuon alpinus) and sloth bear (Melursus ursinus) are some of the animals found here while birds include the threatened lesser florican (Eupodotis indica), Indian grey hornbill and other hornbills.

More than half of the natural forest on the plateau has been cleared for grazing land and the scale of the mining operations on the plateau is disturbing to the movement and therefore the survival of wildlife including elephants and tigers.

PROTECTED AREAS

About 6 percent of the ecoregion's area is within protected areas, comprising 6,720 square kilometres (2,590 sq mi) in 1997. The largest are Palamau Tiger Reserve and Sanjay National Park .

* Bhimbandh Wildlife Sanctuary , Bihar
Bihar
(910 km2) * Dalma Wildlife Sanctuary , Jharkhand
Jharkhand
(630 km2) * Gautam Buddha Wildlife Sanctuary , Bihar
Bihar
(110 km2) * Hazaribagh Wildlife Sanctuary , Jharkhand
Jharkhand
(450 km2) * Koderma Wildlife Sanctuary , Jharkhand
Jharkhand
(180 km2) * Lawalong Wildlife Sanctuary , Jharkhand
Jharkhand
(410 km2) * Palamau tiger Reserve , Jharkhand
Jharkhand
(1,330 km2) * Ramnabagan Wildlife Sanctuary , West Bengal
West Bengal
(150 km2) * Sanjay National Park , Madhya Pradesh (1,020 km2, a portion of which is in the Narmada Valley dry deciduous forests ecoregion) * Semarsot Wildlife Sanctuary , Chhattisgarh (470 km2) * Simlipal National Park , Odisha
Odisha
(420 km2) * Saptasajya Wildlife Sanctuary , Odisha
Odisha
(20 km2) * Tamor Pingla Wildlife Sanctuary , Chhattisgarh (600 km2) * Topchanchi Wildlife Sanctuary , Jharkhand
Jharkhand
(40 km2)

MINERALS

Chota Nagpur plateau is a store house of minerals like mica , bauxite , copper , limestone , iron ore and coal . The Damodar valley is rich in coal and it is considered as the prime centre of coking coal in the country. Massive coal deposits are found in the central basin spreading over 2,883 square kilometres (1,113 sq mi). The important coalfields in the basin are Jharia , Raniganj , West Bokaro , East Bokaro , Ramgarh , South Karanpura and North Karanpura .

SEE ALSO

* Ecoregions of India
India

REFERENCES

* ^ "Chhota Nagpur Plateau". mapsofindia. Retrieved 2010-05-02. * ^ A B Sir John Houlton, Bihar, the Heart of India, pp. 127-128, Orient Longmans, 1949. * ^ A B C D Geography By Yash Pal Singh. Retrieved 2010-05-02. * ^ A B "Chhota-Nagpur dry deciduous forests". The Encyclopaedia of Earth. Retrieved 2010-05-02. * ^ Perspectives in geomorphology By Hari Shanker Sharma. Retrieved 2010-05-02. * ^ A B C " Jharkhand
Jharkhand
Overview" (PDF). Retrieved 2010-05-02. * ^ "Effects of Urbanisation on ground water in Ranchi.". Retrieved 2010-05-02. * ^ Physical Geography: Hydrosphere By K. Bharatdwaj. Retrieved 2010-05-02. * ^ A B C D E Hazaribagh By Edward Lister. Retrieved 2010-05-02. * ^ "Natural Resources Data Management System". Ministry of Science and Technology, Govt. of India. Retrieved 2010-05-02. * ^ "Forest Resources Survey, Hazaribagh 2004" (PDF). Retrieved 2010-05-02. * ^ Sir John Houlton, p. 159 * ^ "Gazetteer of Palamu District". Retrieved 2010-05-04. * ^ Sir John Houlton, p. 170 * ^ O’Malley, L.S.S., ICS, Bankura, Bengal District Gazetteers, pp. 1-20, 1995 reprint, Government of West Bengal * ^ Sir John Houlton, p. 165 * ^ "The West Singhbhum District" (PDF). Retrieved 2010-04-20. * ^ Sir John Houlton, p. 126 * ^ "Damodar Valley". About the Region – Damodar Basin. Ministry of Environments and Forests. Archived from the original on 2007-09-27. Retrieved 2008-05-25. * ^ Wikramanayake, Eric; Eric Dinerstein; Colby J. Loucks; et al. (2002). Terrestrial Ecoregions of the Indo-Pacific: a Conservation Assessment. Island Press; Washington, DC
Washington, DC
. pp. 321-322 * ^ "Mineral Resources and Coal
Coal
Mining". Archived from the original on 2011-08-15. Retrieved 2010-05-03.

FURTHER READING

* Gupta, Satya Prakash. Tribes of Chotanagpur Plateau: An Ethno-Nutritional Akademie-Verlag, Berlin 1983 * Mukhopadhyay, Subhash Chandra. Geomorphology of the Subarnarekha Basin: The Chota Nagpur Plateau, Eastern India. : University of Burdwan, 1980. * Sinha, Birendra K. Light at the End of the Tunnel: A Journey Towards Fulfilment in the Chotanagpur Plateau
Plateau
: a Study in Dynamics of Social-Economic-Cultural-Administrative-Political Growth.

* Media related to Chota Nagpur Plateau
Plateau
at Wikimedia Commons

* v * t * e

Geography of South Asia
South Asia

MOUNTAINS AND PLATEAUS

* Himalayas
Himalayas

* Mount Everest
Mount Everest

* Western Ghats
Western Ghats
* Eastern Ghats
Eastern Ghats
* Aravalli Range * Nilgiris * Vindhya Range
Vindhya Range
* Satpura Range * Garo Hills * Shivalik Hills * Mahabharat Range * Khasi Hills * Annamalai Hills * Cardamom Hills
Cardamom Hills
* Sulaiman Mountains * Toba Kakar Range * Karakoram
Karakoram
* Hindu Kush
Hindu Kush
* Chittagong Hill Tracts
Chittagong Hill Tracts
* Deccan Plateau
Plateau
* Thar Desert
Thar Desert
* Makran
Makran
* Chota Nagpur * Naga Hills * Mysore Plateau
Plateau
* Ladakh
Ladakh
Plateau
Plateau
* Gandhamardan Hills * Malwa
Malwa

LOWLANDS AND ISLANDS

* Indo-Gangetic plain
Indo-Gangetic plain
* Doab
Doab
* Indus Valley * Indus River
Indus River
Delta * Ganges Basin
Ganges Basin
* Ganges Delta
Ganges Delta
* Terai * Atolls of the Maldives
Atolls of the Maldives
* Coromandel Coast
Coromandel Coast
* Konkan
Konkan
* Lakshadweep
Lakshadweep
* Andaman and Nicobar Islands
Andaman and Nicobar Islands
* Sundarbans Reserve Forest
Sundarbans Reserve Forest
* Greater Rann of Kutch * Little Rann of Kutch
Little Rann of Kutch
* Protected areas in Tamil Nadu

BY COUNTRY

* India
India
* Pakistan * Nepal * Bhutan * Sri Lanka * Bangladesh * Maldives * Afghanistan

* v * t * e

Damodar Basin

RIVERS

* Barakar * Bokaro * Damodar * Jamunia * Konar * Mundeswari * Rupnarayan

DAMS, BARRAGES

* Damodar Valley Corporation * Durgapur * Konar * Maithon * Panchet * Tenughat * Tilaiya

GEOGRAPHICAL FEATURES

* Chota Nagpur Plateau * Rajrappa * Rarh region * Shikharji
Shikharji
(Parasnath Hills) * Usri Falls

RIPARIAN DISTRICTS

JHARKHAND

* Bokaro * Dhanbad * Giridih * Hazaribagh * Koderma * Palamu * Ramgarh

WEST BENGAL

* Bankura * Bardhaman * Hooghly * Howrah * Paschim Medinipur * Purba Medinipur * Purulia

LANGUAGES

* Bengali * Hindi
Hindi
* Kurukh * Magahi * Mal Paharia * Malto * Santali

COALFIELDS

* East Bokaro Coalfield * North Karanpura Coalfield * Ramgarh Coalfield * Raniganj Coalfield * South Karanpura Coalfield * West Bokaro Coalfield

INDUSTRIES

* Bokaro Steel Plant * Bokaro Thermal Power Station B * Durgapur Steel Plant
Durgapur Steel Plant
* Durgapur Thermal Power Station * IISCO * Mejia Thermal Power Station * Santaldih Thermal Power Station

TRANSPORT

ROAD

* Grand Trunk Road * National Highway 17 * National Highway 18 * National Highway 2 * National Highway 50 * National Highway 522 * National Highway 60

RAIL

* Asansol–Gaya section * Asansol–Tatanagar–Kharagpur line * Bardhaman–Asansol section * Grand Chord

OTHER BASINS

* Godavari * Kosi * Mahanadi
Mahanadi
–Brahmani –Baitarani * Narmada * Son

* v * t * e

Plateaus of India
India

NORTH

* Changtang
Changtang

SOUTH

* Kolar Plateau
Plateau
* Mysore Plateau
Plateau
* Sigur Plateau
Plateau
* Vallam Plateau
Plateau

EAST

* Changthang plateau * Chota Nagpur Plateau * Karbi-Meghalaya plateau * Karbi Anglong Plateau
Plateau
* Rohtas Plateau
Plateau
* Shillong Plateau
Plateau

WEST

* Mangi-Tungi * Kaas plateau * Deccan Plateau
Plateau

CENTRAL

* Bhander Plateau
Plateau
* Bijawar-Panna Plateau
Plateau
* Malwa
Malwa
* Rewa Plateau
Plateau

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