Plateaus in India: Deccan, Malwa and Chota Nagpur Regions

India’s plateaus form a broad belt of raised land across central, western, southern, eastern and northeastern India. They include ancient crystalline uplands, basalt-covered surfaces, dissected tablelands, river-cut plateaus, forested uplands and dry interior terrain.

The main parent landform is the Peninsular Plateau. Within this wider system are several regional plateau groups, including the Deccan, Central Highlands, Malwa, Chota Nagpur, Karnataka, Telangana, Bastar and the detached Meghalaya or Shillong Plateau. These names operate at different geographic scales and should not be treated as equivalent units.

What Counts as a Plateau in India?

A plateau is raised land with a broad regional surface, but it does not need to be perfectly flat. Many Indian plateaus are rolling, rocky, dissected by rivers or broken by hills and escarpments.

Elevation alone does not define the landform. Mountain valleys in the Himalayas can stand higher than many plateau surfaces without being plateaus. The distinction depends on the broader shape of the terrain and its position relative to neighboring plains, basins and mountain belts.

How India’s Plateau Belt Fits on a Physical Map

The plateau belt lies mainly south of the Indo-Gangetic plains and occupies a large share of peninsular India. It is bordered and interrupted by mountain ranges, river valleys, coastal plains and regional depressions.

The Narmada corridor is a useful broad divider. Many descriptions place the Central Highlands mainly to its north and the Deccan Plateau mainly to its south. Farther east, the Chota Nagpur region forms a separate elevated area, while the Meghalaya Plateau stands detached in northeastern India.

The Western Ghats form a strong western margin to much of the southern plateau country. The Eastern Ghats are lower and more discontinuous, producing a different transition toward the Bay of Bengal coast.

The Peninsular Plateau Is the Parent System

The Peninsular Plateau is the broad landform system underlying much of central and southern India. It contains some of the country’s oldest exposed rocks together with younger volcanic and sedimentary terrain.

Its surface is divided by rivers, escarpments, regional uplands and mountain ranges, so it should not be pictured as one smooth table. Different parts have been shaped by different combinations of uplift, erosion, faulting, volcanism and weathering.

At country scale, three large divisions are useful:

• Southern plateau country: dominated by the Deccan and its regional subdivisions.
• Northern and central uplands: including the Central Highlands and Malwa.
• Eastern and northeastern plateau country: including Chota Nagpur and the detached Meghalaya block.

Major Plateau Regions at Country Scale

The Deccan forms the largest southern plateau region within the Peninsular Plateau. It occupies much of the peninsula between the Western and Eastern Ghats and contains several regional subdivisions rather than one uniform surface.

The Central Highlands lie mainly north of the Narmada and include several older uplands, plateau surfaces and dissected regions. Malwa is one of their better-known regional plateaus, while Bundelkhand and Baghelkhand are commonly treated as related upland areas.

The Chota Nagpur region forms an eastern plateau system centered on Jharkhand. It contains several internal plateau surfaces and valleys and is geographically separate from the main southern Deccan tableland.

The Meghalaya or Shillong Plateau stands apart in northeastern India. It is separated from the main Peninsular Plateau by lower terrain associated with the Ganga-Brahmaputra system and is best treated as a detached plateau block.

Farther south and east, the Karnataka, Telangana, Rayalaseema and Bastar-Dandakaranya uplands form regional subdivisions of the wider peninsular plateau landscape rather than separate national-scale systems.

How the Main Plateau Regions Compare

Regional Plateau Names Operate at Different Scales

Indian plateau terminology can become confusing because very large parent regions and smaller subdivisions often appear in the same lists.

Plateau and Mountain Boundaries Often Meet

India’s plateau regions are bordered by or contain several mountain and hill systems. The Western Ghats form a steep western margin to much of the Deccan, while the Eastern Ghats form a more fragmented eastern boundary.

The Vindhya and Satpura ranges are also closely connected with the transition between northern and southern plateau divisions. These ranges should not automatically be counted as plateaus simply because they occur inside or beside the peninsular upland.

The same distinction applies in northeastern India. The Garo, Khasi and Jaintia hills occupy the Meghalaya Plateau, but individual hills and ridges are local relief features within the wider raised block.

Broad Drainage Pattern Across the Plateau Belt

India’s plateau regions form headwaters and drainage divides for several large river systems. The overall peninsular surface generally favors eastward drainage toward the Bay of Bengal, although important structural valleys create westward-flowing exceptions.

The exact river courses, tributary networks and individual basin relationships differ from one plateau to another and are better treated at regional scale.

India’s Plateau Geology Is Not Uniform

The country’s plateau regions rest on several different geological foundations. Large parts of the Peninsular Plateau expose very old crystalline rocks, while volcanic terrain dominates parts of western and central India and sedimentary rocks appear across other plateau sectors.

At national scale, the main geological patterns can be separated into three broad groups:

• Ancient crystalline uplands formed on old continental crust.
• Volcanic plateau surfaces developed across areas covered by large lava sequences.
• Sedimentary and mixed plateau terrain where different rock units influence escarpments, valleys and tablelands.

River erosion and long weathering have modified all of these surfaces. A plateau can therefore remain a recognizable regional landform even after valleys and hills have divided its original surface.

Climate Varies Across India’s Plateau Regions

India’s plateau belt crosses several climatic settings. Elevation, latitude, distance from the sea, monsoon direction and mountain barriers all influence rainfall and temperature.

The Western Ghats intercept moist southwest monsoon air, while parts of the interior lie in drier rain-shadow zones. Eastern plateau regions have different rainfall patterns, and the Meghalaya Plateau receives very high monsoon rainfall along parts of its southern margin.

Climate zones do not follow plateau boundaries exactly. A large plateau can cross several rainfall, soil and vegetation regions.

Plateau, Highland, Ghats and Plains

Several terms appear together on Indian physical maps, but they describe different kinds or scales of terrain.

Plateaus and Surrounding Lowlands

India’s plateau geography becomes clearer when raised surfaces are compared with adjacent lower terrain. The northern plains lie below the Peninsular Plateau. Coastal plains form narrow or broader lowland belts along the peninsula, while river valleys and basins cut into the elevated interior.

These transitions can be gradual or abrupt. Western plateau margins can descend sharply toward coastal terrain, while eastern margins are often more broken and irregular. River valleys can also create low corridors deep inside otherwise elevated regions.

A plateau boundary therefore does not always appear as a continuous cliff. Many Indian plateau margins consist of a sequence of escarpments, dissected slopes, foothills and lower basins.

How to Separate the Main Plateau Names

Keeping these geographic levels separate allows the country page to function as a national plateau inventory without turning every named plateau into a full regional profile.