Introduction

• The Eastern Ghats are a discontinuous chain of hills and uplands running roughly parallel to the eastern coast of India and the Bay of Bengal.
• They are generally lower and more broken than the Western Ghats because they have been extensively dissected by rivers flowing eastward into the Bay of Bengal.

Location and extent

• The Eastern Ghats extend through parts of:
  • Odisha
  • Andhra Pradesh
  • Telangana
  • Tamil Nadu
  • with associated hill sections also linking into parts of Karnataka at the southern junction zone
• They form the eastern edge of the Peninsular Plateau in many stretches.

Nature of the range

• The Eastern Ghats are not a continuous wall-like mountain chain.
• They are called discontinuous because major rivers have cut across them and divided them into separate hill blocks.
• This makes them very different from the more continuous Western Ghats.

Relief and elevation

• The Eastern Ghats are generally lower than the Western Ghats.
• Their average elevation is about 600 metres.
• Some peaks rise above 1,200 metres.
• The highest point is Arma Konda in Andhra Pradesh, at about 1,680 metres.

Major hill ranges and sections

• Important sections and hill systems associated with the Eastern Ghats include:
  • Nallamala Hills
  • Seshachalam Hills
  • Javadi Hills
  • Shevaroy Hills
  • Kalrayan Hills
• The Tirumala Hills are part of the Seshachalam range, which belongs to the Eastern Ghats system.

Geological character

• The Eastern Ghats are very old mountains and belong to the ancient geological formations of Peninsular India.
• They are composed largely of old crystalline rocks and highly metamorphosed formations.
• Their present broken form is the result of long geological history and prolonged erosion. This is an inference consistent with standard geographic treatment of the Ghats as ancient, eroded uplands rather than young fold mountains.

Rivers cutting across the Eastern Ghats

• Several important east-flowing rivers cut through the Eastern Ghats, making the range discontinuous.
• Major rivers associated with this feature include:
  • Mahanadi
  • Godavari
  • Krishna
  • Kaveri
• These rivers have formed wide valleys and gaps across the range.

Relation with the Deccan Plateau

• The Eastern Ghats form an important physiographic link between the Peninsular Plateau and the Eastern Coastal Plains.
• They mark the eastern margin of the plateau in many regions and slope down toward the coastal lowlands.

Climatic significance

• The Eastern Ghats influence regional climate, rainfall distribution, and drainage patterns in eastern and southern India.
• However, their effect as a rainfall barrier is much less pronounced than that of the Western Ghats because:
  • they are lower
  • they are discontinuous
• As a result, they do not create a strong continuous orographic barrier.

Vegetation

• The Eastern Ghats support a variety of forest types, especially:
  • tropical moist deciduous forests
  • tropical dry deciduous forests
  • patches of scrub and mixed forests
• Vegetation varies with rainfall, elevation, and local ecological conditions.

Biodiversity significance

• The Eastern Ghats are ecologically important and contain many areas of biodiversity value and local endemism.
• Though they are not treated as globally prominent as the Western Ghats in standard hotspot discourse, several protected areas and forest tracts within the Eastern Ghats are important for conservation.
• Botanical Survey of India publications continue to record species diversity and new regional records from Eastern Ghats landscapes such as Papikonda National Park.

Protected areas and conservation importance

• Important conservation-linked landscapes associated with the Eastern Ghats include:
  • Seshachalam Biosphere Reserve
  • Papikonda National Park
  • Tirumala Hills
• UNESCO’s tentative listing note on Tirumala Hills identifies them as part of the Seshachalam range of the Eastern Ghats.

Economic significance

• The Eastern Ghats are important for:
  • forest resources
  • minerals in some sections
  • tribal livelihoods
  • watershed functions
  • agriculture in adjoining valleys and plains
• Their hill tracts also support pilgrimage centres, ecotourism, and region-specific horticulture in some areas.

Human geography

• Many parts of the Eastern Ghats are inhabited by tribal communities, especially in Odisha, Andhra Pradesh, and adjoining regions.
• These hill areas are important from the perspective of:
  • tribal culture
  • forest dependence
  • developmental challenges
  • conservation-policy debates
• This is a widely accepted geographical and policy relevance of the region, though exact community distribution varies by state.

Difference from the Western Ghats

• The Eastern Ghats differ from the Western Ghats in several ways:
  • they are discontinuous
  • they are generally lower in elevation
  • they are more eroded
  • they are cut across by major rivers
  • they have a weaker role as a continuous climatic barrier
• The Western Ghats, by contrast, are far more continuous and topographically prominent.

Significance in Indian geography

• The Eastern Ghats are important in Indian geography because they help explain:
  • the physiography of Peninsular India
  • east-flowing river systems
  • plateau–coastal transitions
  • ecological variation in eastern India
• They are also relevant in questions related to biodiversity, protected areas, tribal regions, and regional development.

Limitations and concerns

• The Eastern Ghats have faced pressures from:
  • deforestation
  • mining
  • habitat fragmentation
  • infrastructure expansion
• Because the range is already fragmented geographically, ecological fragmentation can create additional conservation challenges. This is an inference supported by the conservation importance of Eastern Ghats protected landscapes and ongoing biodiversity documentation.

Conclusion

• The Eastern Ghats are an old, discontinuous mountain system along the eastern margin of Peninsular India.
• Their importance lies in:
  • shaping the physical geography of eastern India
  • influencing drainage and ecology
  • supporting biodiversity and tribal communities
  • linking the Peninsular Plateau with the Eastern Coastal Plains
• Even though they are less prominent than the Western Ghats in popular discussion, they remain a major physiographic and ecological feature of India.