Western Ghats vs Eastern Ghats
Continuous west-coast escarpment versus discontinuous east-coast hills — geology, rainfall, biodiversity, and UNESCO status.
Start here
The Western Ghats are a continuous escarpment along India’s west coast, blocking the southwest monsoon and hosting a UNESCO biodiversity hotspot. The Eastern Ghats are a discontinuous, lower hill chain inland from the Coromandel coast, extending from Odisha to Tamil Nadu.
Both are “Ghats” but geomorphologically different. The Western Ghats block southwest monsoon — creating wet Konkan/Malabar and rain shadow beyond. Eastern Ghats are broken hills from Odisha to Tamil Nadu, separated from the coast by coastal plains.
UPSC tests continuity, highest peaks, biodiversity hotspot tag (Western only), and river origins (Godavari, Krishna, Cauvery rise in Western Ghats; Mahanadi in Eastern Ghats).
Side-by-side comparison
| Feature | Western Ghats | Eastern Ghats |
|---|---|---|
| Geological age | Older, more stable block | Older but heavily eroded, dismembered |
| Biodiversity | Hotspot — lion-tailed macaque, Nilgiri tahr | Important but less globally flagged |
| Rivers originating | Godavari, Krishna, Cauvery, Periyar | Mahanadi, Pennar, Palar (partial) |
| Passes / gaps | Palakkad, Thal Ghat, Bhor Ghat | Araku, Gangam (regional gaps) |
| Vegetation | Evergreen, moist deciduous, shola-grassland | Dry deciduous, scrub; less rainforest cover |
| Economic use | Tea, coffee, spices, hydro projects | Bauxite, tribal agriculture; less plantation belt |
At a glance
Continuity
Continuous from Gujarat to Kanyakumari
Discontinuous — broken by rivers
Highest peak
Anaimudi (2,695 m), Kerala
Mahendragiri (~1,501 m), Odisha
Rainfall role
Major orographic barrier for SW monsoon
Less blocking; Bay branch dominates east coast
UNESCO WHS
Yes (2012 — serial sites)
No comparable serial designation
Mumbai vs Visakhapatnam rain shadow
Mumbai on the windward Western Ghats slope receives ~2,400 mm — lush. Pune, leeward, gets ~700 mm. Visakhapatnam on the Coromandel plain receives monsoon from Bay branch; Eastern Ghats are lower and broken — less dramatic orographic lift than the Western wall.
What this means for the exam
Western Ghats = continuous orographic barrier | Eastern Ghats = fragmented, lower, east of Deccan.
Understand the difference
Western Ghats as water tower
Peninsular rivers carrying monsoon water to water-stressed east originate in Western Ghats forests. Gadgil-Kasturirangan reports on ecologically sensitive zones stem from this hydrological and biodiversity role — a GS-III Environment link.
Prelims statement check
“Eastern Ghats are a continuous mountain range parallel to the west coast.”
Incorrect — Continuity
Eastern Ghats are discontinuous and lie along the east; Western Ghats are the continuous west-coast range.
“Anaimudi is the highest peak of the Western Ghats.”
Correct — Peak fact
Correct — in Kerala’s Idukki district.
PYQ Linkage
Which of the following statements about Eastern Ghats is correct?
Key Takeaway
Western = continuous, wet, hotspot | Eastern = broken, lower, east of Deccan