🔆 India Adds 3,582 km to Coastline & 7 New Islands

📍A new reassessment using improved tech has increased India’s official coastline length by ~50%
✅ Previous coastline (1970s): 7,516 km
✅ New official length: 11,058.6 km
✅ Reason: Higher-resolution data (1:25000 map scale vs older 1:45000)
✅ 3,582 km “added” due to better capture of curves, bends & offshore island coastlines
✅ 7 new offshore islands identified; total island count now 1,389 (1,298 offshore + 91 inshore)
✅ Coastline measurement now to be done every 10 years

📍State-wise highest coastline
✅ Gujarat (2,340 km), Andaman & Nicobar (3,083 km), Tamil Nadu (1,068 km)

📍Implications
✅ Better disaster management, CRZ rules, coastal zone protection
✅ Improved planning for shipping, security, and tourism
✅ Reclassification will not affect boundaries, only accuracy

📝 Prelims Question:
Which state has the longest coastline in India as per the revised measurements?
(a) Maharashtra
(b) Tamil Nadu
(c) Gujarat ✅
(d) Andhra Pradesh

📝 Mains Question:
Explain the significance of scientific reassessment of coastline and islands in India’s disaster management and developmental planning.

UPSC Mapping Prelims Mains

🔆 India Adds 3,582 km to Coastline & 7 New Islands

📍A new reassessment using improved tech has increased India’s official coastline length by ~50%
✅ Previous coastline (1970s): 7,516 km
✅ New official length: 11,058.6 km
✅ Reason: Higher-resolution data (1:25000 map scale vs older 1:45000)
✅ 3,582 km “added” due to better capture of curves, bends & offshore island coastlines
✅ 7 new offshore islands identified; total island count now 1,389 (1,298 offshore + 91 inshore)
✅ Coastline measurement now to be done every 10 years

📍State-wise highest coastline
✅ Gujarat (2,340 km), Andaman & Nicobar (3,083 km), Tamil Nadu (1,068 km)

📍Implications
✅ Better disaster management, CRZ rules, coastal zone protection
✅ Improved planning for shipping, security, and tourism
✅ Reclassification will not affect boundaries, only accuracy

📝 Prelims Question:
Which state has the longest coastline in India as per the revised measurements?
(a) Maharashtra
(b) Tamil Nadu
(c) Gujarat ✅
(d) Andhra Pradesh

📝 Mains Question:
Explain the significance of scientific reassessment of coastline and islands in India’s disaster management and developmental planning.

#GS1 #Geography #Coastline #Mapping

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7.13K viewsedited  Jun 29 at 16:53