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Plateaus and Rolling Uplands
The high plateaus are found in mountain ranges with an
average elevation of 300-600 meters. They are almost flat and the monotony
of orography is interrupted by the deep river valleys. The plateaus are
morphologically divided into the following divisions:-
a) The Panposh-Kendujhar-pala
Lahara plateau of the upper Baitarani catchment basin
b) The Nabaranyapur-Jaypur plateau of the upper Sabari basin
The rolling uplands are lower in elevation and they vary between
150 and 300 meters. These uplands are the product of revise action and are flat
in nature. They are rich in soil nutrients and afford good opportunities for
cultivation of paddy in wet areas.
The rolling uplands are grouped into the following morphological
units:-
a) The Rajgangpur-panposh uplands of the Koel and the
Sankh rivers.
b) The Jharsuguda uplands of the Ib basin.
c) The Baragarh uplands of the
Jira and the Jhaun basins.
d) The
Balangir-Titilagarh-Patnagarh uplands of northern Tel
basin
e) The Bhawanipatna uplands of the southern Tel
basin
f) The Malkangiri uplands of the Sabari basin
The river Valleys
The valleys have been carved out by the major rivers of Orissa
due to fluvial action. They are mostly narrow and deep in the upper reaches,
slightly wide in the middle reaches and widest in the lower reaches where they
enter the plains of Orissa. These river valleys are as follows:-
a) The Valley of the Mahanadi
b) The Valley of Brahmani
c) The Valley of the Vamsadhara
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