Coastline Overview
India's vast coastline stretches across two seas and an ocean, supporting millions of livelihoods
🌊 India's Peninsular Coastline
India is a peninsular nation bounded by the Arabian Sea on the west, the Bay of Bengal on the east, and the Indian Ocean to the south. The coastline stretches from the Rann of Kutch (Gujarat) in the northwest to the Sundarbans (West Bengal) in the northeast.
The western coast is generally narrow, rocky, and indented with few natural harbours (except where rivers form estuaries), while the eastern coast is comparatively broad, smooth, and low-lying with large river deltas. This fundamental difference is due to the steeper Western Ghats backing the west coast vs. the gentler Eastern Ghats behind the east coast.
Coastal States (9)
- West Coast: Gujarat, Maharashtra, Goa, Karnataka, Kerala
- East Coast: Tamil Nadu, Andhra Pradesh, Odisha, West Bengal
Coastal Union Territories (4)
- Puducherry, Lakshadweep, Andaman & Nicobar Islands, Daman & Diu (now Dadra & Nagar Haveli and Daman & Diu)
Coastline Length by State
State-wise coast distribution
*A&N Islands coast is island territory, not mainland. Gujarat has the longest mainland coast.
Western Coast (Arabian Sea)
From Gujarat's creeks to Kerala's backwaters — the narrow, rocky, estuarine western coastline
The western coast runs from the Rann of Kutch (Gujarat) to Kanyakumari (Kerala). It is generally narrow (10–80 km wide), rocky and indented, backed by the steep Western Ghats. Rivers entering the Arabian Sea form estuaries (not deltas) because of the narrow coastal strip and strong tidal action. This coast is regionally known as Konkan (Maharashtra), Kanara/Karnataka coast, and Malabar (Kerala).
Gujarat Coast
Longest coastline of any Indian stateGujarat has India's longest coastline, stretching from the Rann of Kutch in the north to the Daman border in the south. The coast is highly indented and marshy, with two major gulfs — the Gulf of Kachchh and the Gulf of Khambhat (Cambay). The Kathiawar (Saurashtra) Peninsula juts into the Arabian Sea between these two gulfs. The coast features creeks, mudflats, salt marshes, and coral reefs (Gulf of Kachchh Marine National Park).
Maharashtra Coast (Konkan)
Rocky coast with India's busiest portKnown as the Konkan Coast, this stretch from Daman to Goa is characterized by rocky headlands, cliffs, pocket beaches, and laterite terrain. The Western Ghats rise sharply behind, with numerous waterfalls during monsoon. Mumbai's natural harbour (one of the finest in the world) is formed by Salsette and Trombay islands. The coast receives heavy monsoon rainfall (2,000–4,000mm).
Goa Coast
India's beach tourism capitalDespite being India's smallest state, Goa's coast is world-renowned for its golden sandy beaches — Calangute, Baga, Anjuna, Palolem, and Colva. The coast features estuaries of the Mandovi and Zuari rivers, which merge at the Cabo Aguada headland. The Mormugao harbour is one of India's oldest and busiest iron ore export ports.
Karnataka Coast (Kanara)
Rocky coast with river mouthsDivided into North Kanara (Uttara Kannada) and South Kanara (Dakshina Kannada). The coast is rocky with occasional sandy stretches and mangrove patches. Major rivers like Sharavathi (Jog Falls — India's highest plunge waterfall) and Netravati meet the sea here. The Ghats are very close to the coast, creating dramatic landscapes.
Kerala Coast (Malabar)
Backwaters, lagoons & coconut-fringed shoresThe Malabar Coast is unique for its backwater system — an interconnected network of lagoons, canals, rivers, and lakes parallel to the coast. The Vembanad Lake (2,033 km², largest lake in Kerala) and Ashtamudi Lake are key backwater bodies. Kuttanad is one of the few regions in the world where farming occurs below sea level (-2.2m). The coast is smooth, low-lying, and palm-fringed.
Eastern Coast (Bay of Bengal)
Broad, deltaic, and cyclone-prone — the wide eastern seaboard from Tamil Nadu to West Bengal
The eastern coast extends from Kanyakumari to the Ganga-Brahmaputra delta in West Bengal. It is broader (100–130 km wide in places) and smoother than the western coast, with extensive river deltas (Krishna, Godavari, Kaveri, Mahanadi). The Eastern Ghats are set back from the coast, allowing wide alluvial plains. This coast is regionally called Coromandel (TN/AP) and Northern Circars (AP/Odisha). It is highly cyclone-prone.
Tamil Nadu Coast (Coromandel)
Smooth delta coast with India's 2nd largest city portThe Coromandel Coast of Tamil Nadu is low-lying, sandy, and relatively smooth. The Kaveri River delta is the granary of South India. The coast receives northeast monsoon rainfall (Oct-Dec), unlike the rest of India. Marina Beach (Chennai) is one of the longest urban beaches in the world (13 km). The Gulf of Mannar coast features coral reefs and marine biodiversity. Palk Strait separates India from Sri Lanka.
Andhra Pradesh Coast (Northern Circars)
Fertile deltas & major port cityThe AP coast features two of India's largest river deltas — the Krishna and Godavari deltas — among the most fertile agricultural regions. The historic Northern Circars region covers the northern coast. Visakhapatnam is a major port and India's eastern naval command HQ. The coast also has Pulicat Lake (2nd largest brackish water lagoon in India) at the AP-TN border.
Odisha Coast
Sandy beaches, Chilika lagoon & cyclone corridorThe Odisha coast is smooth and sandy, with the Mahanadi River delta in the north. It hosts Chilika Lake — India's largest brackish water lagoon (1,100 km²) and a Ramsar wetland, famous for migratory birds and Irrawaddy dolphins. The coast is one of the most cyclone-prone in India (1999 Super Cyclone, Fani 2019, Amphan 2020). Puri's Golden Beach and the Konark Sun Temple are nearby.
West Bengal Coast
Sundarbans mangrove delta — world's largestThough shortest among mainland coastal states, West Bengal's coast is home to the Sundarbans — the world's largest mangrove forest (10,000 km² shared with Bangladesh) and a UNESCO World Heritage Site. The Ganga-Brahmaputra-Meghna delta (world's largest delta) dominates the landscape. The coast is marshy, low-lying, and subject to tidal flooding. Digha is a popular beach resort.
Island Territory Coasts
Coral atolls and volcanic archipelagos — India's oceanic frontiers
Andaman & Nicobar Islands
Bay of Bengal — volcanic & coral archipelago572 islands (38 inhabited) stretching 800 km north to south. The islands are peaks of a submerged mountain chain — an extension of the Arakan Yoma range of Myanmar. Features include coral-fringed coastline, white sand beaches, dense tropical rainforest (86% forest cover), and India's only active volcano — Barren Island. Radhanagar Beach (Havelock) is rated among Asia's best.
Lakshadweep Islands
Arabian Sea — coral atolls & lagoons36 islands (10 inhabited) — India's smallest UT. These are coral atolls (ring-shaped coral reefs enclosing lagoons) sitting atop the underwater Chagos-Laccadive Ridge. The islands are low-lying (max elevation ~5m), making them vulnerable to sea-level rise. Minicoy is closest to the Maldives. The lagoons have crystal-clear turquoise water and rich marine biodiversity.
Interactive Coastal Map
Explore ports, beaches, lagoons, deltas, and coastal features across India
Coastal Features Map of India
Click markers to explore ports, beaches, lagoons & coastal landforms
Deltas & Estuaries
India's river mouths — deltaic on the east coast, estuarine on the west
🔺 Major Deltas (East Coast)
The east coast features extensive river deltas because the Eastern Ghats are lower and set back, allowing rivers to deposit sediment over broad, gently sloping plains. Major deltas:
- Ganga-Brahmaputra Delta (Sundarbans): World's largest delta (~80,000 km²). Shared with Bangladesh. Mangrove forests, Royal Bengal Tiger habitat, UNESCO site.
- Godavari Delta: ~6,000 km² in AP. Known as "Konaseema" — rich rice-growing region, palm-fringed.
- Krishna Delta: ~4,000 km² in AP. Highly fertile, major rice and sugarcane production.
- Kaveri (Cauvery) Delta: ~4,000 km² in TN. Called "Granary of South India," Thanjavur district is the heartland.
- Mahanadi Delta: ~9,000 km² in Odisha. Includes Chilika Lake on its southern margin.
🌀 Major Estuaries (West Coast)
The west coast rivers form estuaries (funnel-shaped tidal river mouths) rather than deltas, because the Western Ghats are steep and close to the coast, leaving no room for sediment deposition. Key estuaries:
- Narmada Estuary: Opens into the Gulf of Khambhat, Gujarat. India's largest west-flowing river. Ria-like estuary.
- Tapi (Tapti) Estuary: Also into Gulf of Khambhat. Surat city is on this estuary.
- Mandovi-Zuari Estuary: Goa's twin lifelines. Merge near Cabo Raj Niwas. Important for fisheries and iron ore transport.
- Sharavathi Estuary: Enters sea at Honnavar, Karnataka.
- Periyar Estuary: Opens at Kochi, Kerala. The basis for Kochi's famous harbour.
Western Ghats are steep and close to the coast → rivers are short, fast-flowing, carry sediment directly to sea (tides sweep it away) → estuaries. Eastern Ghats are lower and set back → rivers are long, slow-flowing, deposit sediment → deltas.
Lagoons of India
Brackish water bodies separated from the sea by sandbars or barrier islands
Famous Beaches of India
From urban waterfronts to pristine tropical shores — India's iconic beaches
Major Ports of India
13 major ports (central government) handle ~55% of India's maritime trade; 200+ minor ports under state governments
200+ minor ports are managed by respective state governments. Gujarat alone has 42+ minor ports, including Mundra (India's largest private port by cargo volume, operated by Adani Group). JNPT is India's largest container port. Visakhapatnam handles the most cargo by tonnage among east coast ports. India aims to develop Sagarmala Project — port-led industrialization and coastal economic zones.
Maritime Zones
India's maritime jurisdiction under UNCLOS (United Nations Convention on the Law of the Sea)
Land
Waters
Zone
Full sovereign rights over resources
| Zone | Extent | Rights |
|---|---|---|
| Internal Waters | Inside baseline | Full sovereignty, same as land territory |
| Territorial Sea | 0–12 NM from baseline | Full sovereignty; innocent passage allowed for foreign ships |
| Contiguous Zone | 12–24 NM | Customs, immigration, fiscal, sanitary enforcement |
| Exclusive Economic Zone (EEZ) | 24–200 NM | Sovereign rights over natural resources (fish, oil, minerals); freedom of navigation for others |
| Continental Shelf | Up to 350 NM | Rights over seabed resources (mineral, sedentary species) |
Coastal Ecosystems
Mangroves, coral reefs, seagrass beds, and estuarine ecosystems that sustain India's coastal biodiversity
⚠️ Coastal Threats
Coastal Regulation Zone (CRZ)
India's regulatory framework for coastal land use — protecting ecologically sensitive areas while allowing sustainable development
The CRZ Notification (2019) issued under the Environment Protection Act, 1986 classifies coastal areas into four categories. The regulations control construction, industrial activity, and development within 500m of the High Tide Line (HTL) on the landward side and up to 12 nautical miles on the seaward side.
Ecologically Sensitive
Mangroves, coral reefs, sand dunes, biologically active mudflats, national parks, marine parks, wildlife habitats, salt marshes, turtle nesting grounds, horse-shoe crab habitats, seagrass beds, nesting sites of birds. No new construction permitted except eco-tourism facilities with strict guidelines.
Urban / Developed Areas
Areas already substantially built-up close to the shoreline within municipal limits. Construction allowed only on the landward side of existing roads/structures. Floor Space Index (FSI) limited. No new buildings seaward of existing structures. Existing buildings can be repaired/reconstructed.
Rural / Undeveloped Areas
Coastal areas that are not substantially built-up — rural, agricultural, and undeveloped areas. No Development Zone (NDZ): 200m from HTL for densely populated areas; 50m for sparsely populated. Agriculture, horticulture, rain-fed parks, public facilities allowed beyond NDZ.
Water Area (Aquatic)
The water area from the Low Tide Line (LTL) to the territorial water limit (12 NM). Includes tidal-influenced water bodies. Fishing, traditional activities allowed. No untreated sewage discharge. Dredging, reclamation only with prior environmental clearance.