Consider the following rivers: 1. Brahmani 2. Nagavali 3. Subarnarekha 4. Vamsadhara Which of the above rise from the Eastern Ghats?
Contents13
- A1 and 2
- B2 and 4
- C3 and 4
- D1 and 3
Show answer
Answer: (B) 2 and 4
Brahmani (Option 1) is wrong:
Formed by Sankh and South Koel rivers near Rourkela — both originate in the Chota Nagpur Plateau, not the Eastern Ghats.
Nagavali (Option 2) is correct:
Originates from the eastern slopes of the Eastern Ghats near Lakhbahal in Kalahandi district, Odisha, at about 1,300 m altitude.
Subarnarekha (Option 3) is wrong:
Originates near Ranchi in Jharkhand, on the Chota Nagpur Plateau.
Vamsadhara (Option 4) is correct:
Rises in the Eastern Ghats on the border of Kalahandi and Rayagada districts of Odisha.
Options 2 and 4 are correct.
Answer: (b).
Rivers from Eastern Ghats flow eastward into Bay of Bengal, while Chota Nagpur Plateau rivers like Brahmani and Subarnarekha have different source regions despite flowing in similar directions.
UPSC tests precise knowledge of river origins to distinguish between Eastern Ghats and Chota Nagpur Plateau - two highland regions in eastern India that students commonly confuse.
Nagavali River
Geography Nagavali
Nagavali River: Eastern Ghats Origin & Course
Nagavali originates from Eastern Ghats in Kalahandi district, Odisha at 1,300m altitude
Flows eastward into Bay of Bengal through Andhra Pradesh
Major tributary is Vamsadhara river
Nagavali is a peninsular river that definitively rises from the Eastern Ghats near Lakhbahal in Kalahandi district, Odisha, making it one of the key east-flowing rivers from this mountain range.
Nagavali River Profile
Aspect | Details |
|---|---|
Origin | Eastern Ghats, Lakhbahal, Kalahandi district, Odisha |
Elevation | 1,300 meters above sea level |
Direction | East-flowing (typical for Eastern Ghats rivers) |
States | Odisha → Andhra Pradesh |
Outfall | Bay of Bengal |
Length | Approximately 256 km |
Never confuse Nagavali with Chota Nagpur Plateau rivers like Brahmani or Subarnarekha
Nagavali = Eastern Ghats origin (correct), Brahmani = Chota Nagpur (incorrect for this question)
Kalahandi district is the key location marker for Nagavali's Eastern Ghats origin
Vamsadhara River
Geography Vamsadhara
Vamsadhara River: Eastern Ghats Border Origin
Vamsadhara rises from Eastern Ghats on Kalahandi-Rayagada border in Odisha
Flows through Odisha and Andhra Pradesh to reach Bay of Bengal
Length approximately 254 km with major dams for irrigation
Vamsadhara is another confirmed Eastern Ghats river, originating on the border between Kalahandi and Rayagada districts of Odisha, making it a clear example of eastward drainage from this mountain system.
Vamsadhara River Profile
Aspect | Details |
|---|---|
Origin | Eastern Ghats, Kalahandi-Rayagada border, Odisha |
Direction | East-flowing toward Bay of Bengal |
States | Odisha → Andhra Pradesh |
Length | 254 km |
Major Infrastructure | Gotta Barrage, Thotapalli Barrage |
Significance | Irrigation for both states |
Border location trap: Vamsadhara rises on Kalahandi-Rayagada border, not entirely within one district
Don't mix Eastern Ghats rivers (Vamsadhara, Nagavali) with Chota Nagpur rivers
Both Nagavali and Vamsadhara are from Eastern Ghats — remember the pair for UPSC questions
Brahmani River
Geography Brahmani
Brahmani River: Chota Nagpur Formation, Not Eastern Ghats
Brahmani is formed by Sankh + South Koel rivers near Rourkela
Both tributaries originate in Chota Nagpur Plateau, NOT Eastern Ghats
Flows through Odisha to reach Bay of Bengal at Dhamra
Brahmani is the classic UPSC trap river — it flows through Odisha like Eastern Ghats rivers, but actually forms from Chota Nagpur Plateau tributaries, making it incorrect for Eastern Ghats origin questions.
Brahmani Formation & Course
Component | Details |
|---|---|
Formation Point | Confluence near Rourkela, Odisha |
Sankh River Origin | Chota Nagpur Plateau (Jharkhand) |
South Koel Origin | Chota Nagpur Plateau (Jharkhand) |
Combined Length | 799 km total |
Outfall | Bay of Bengal at Dhamra (Odisha) |
Key Cities | Rourkela, Talcher, Dhenkanal |
Major trap: Brahmani flows in Odisha (like Eastern Ghats rivers) but originates from Chota Nagpur
Formation confusion: Brahmani = Sankh + South Koel, both from Chota Nagpur Plateau
UPSC loves this: Rivers in same state can have different source regions
Subarnarekha River
Geography Subarnarekha
Subarnarekha River: Chota Nagpur Origin Near Ranchi
Subarnarekha originates near Ranchi, Jharkhand on Chota Nagpur Plateau
Name means 'golden line' — flows through Jharkhand, West Bengal, Odisha
Meets Bay of Bengal, NOT from Eastern Ghats
Subarnarekha (meaning 'golden line') is a clear Chota Nagpur Plateau river starting near Ranchi, making it another wrong answer for Eastern Ghats origin questions despite its eastward flow.
Subarnarekha River Profile
Aspect | Details |
|---|---|
Origin | Near Ranchi, Jharkhand (Chota Nagpur Plateau) |
Name Meaning | 'Swarna-rekha' = Golden Line |
States Crossed | Jharkhand → West Bengal → Odisha |
Length | 395 km |
Major Cities | Ranchi, Jamshedpur, Ghatsila |
Outfall | Bay of Bengal near Kirtania |
Location trap: Ranchi = Chota Nagpur, not Eastern Ghats origin
Name recognition: Subarnarekha is famous but from wrong source region for this question
Multi-state confusion: Crosses 3 states but origin determines source classification
Eastern Ghats Drainage Pattern
Geography
Eastern Ghats vs Chota Nagpur: River Source Classification
Eastern Ghats rivers: Nagavali, Vamsadhara, Pennar, some Godavari tributaries
Chota Nagpur rivers: Damodar, Subarnarekha, Brahmani components
Both regions produce east-flowing rivers but are geographically distinct
Eastern Ghats and Chota Nagpur Plateau are distinct upland regions that both generate eastward-flowing rivers toward the Bay of Bengal, creating classic UPSC confusion traps in river classification questions.
Source Region Comparison
Region | Location | Major Rivers from This Source | UPSC Trap Factor |
|---|---|---|---|
Eastern Ghats | Odisha-Andhra hills | Nagavali, Vamsadhara, Pennar | Often confused with nearby regions |
Chota Nagpur | Jharkhand plateau | Subarnarekha, Brahmani (components) | Students mix with Eastern Ghats |
Western Ghats | Maharashtra-Kerala range | West-flowing + some Godavari/Krishna | Opposite drainage direction |
Satpura Range | Central India | Narmada, Tapti (west-flowing) | Different drainage altogether |
River Source Regions
Source: Testbook — Peninsular River System, Evolution, Characteristics & Major Rivers · testbook.com
Geographic proximity trap: Both Eastern Ghats and Chota Nagpur are in eastern India but are separate uplands
Flow direction confusion: All drain eastward but UPSC asks about source region, not destination
State overlap: Odisha has rivers from both sources — check origin, not the state they flow through
Chota Nagpur Plateau Rivers
Geography
Chota Nagpur Plateau: Major River Source Region
Chota Nagpur Plateau spans Jharkhand, parts of Odisha, West Bengal, Chhattisgarh
Major rivers: Damodar, Subarnarekha, Sankh, South Koel
Rich in minerals — coal, iron ore, mica belt
Chota Nagpur Plateau is a major peninsular plateau region centered in Jharkhand that serves as the source for several important east-flowing rivers, often creating UPSC confusion with Eastern Ghats rivers.
Major Chota Nagpur Rivers
River | Origin Point | Key Features | UPSC Relevance |
|---|---|---|---|
Subarnarekha | Near Ranchi | Golden line, 395 km | Often confused with Eastern Ghats |
Damodar | Palamu hills | Sorrow of Bengal, DVC | Classic plateau river |
Sankh | Chota Nagpur hills | Forms Brahmani with South Koel | Brahmani formation component |
South Koel | Jharkhand plateau | Merges near Rourkela | Other Brahmani component |
Plateau confusion: Chota Nagpur ≠ Eastern Ghats despite both being eastern uplands
Ranchi marker: If origin is near Ranchi/Jharkhand, it's Chota Nagpur, not Eastern Ghats
Composite rivers: Brahmani seems like one river but is Sankh + South Koel from Chota Nagpur