Navigating India’s Waterways: Building a Safer, Smarter Network

1. At a Glance

• India is building navigation support for its inland waterways so vessels can move more safely, more predictably and around the clock. The main tools are hydrographic surveys, fairway maintenance/dredging, Aids to Navigation (AtoN), digital depth, route and weather platforms, and India's first riverine lighthouses on the Brahmaputra [1].
• Moving a tonne of freight by water costs about one-third of road and half of rail, and emits a fraction of the carbon [1].
• The topic covers GS-III (infrastructure, logistics, green growth), GS-I (river geography) and GS-II (the India–Bangladesh Protocol route) [1].

2. Why in the News

• 16 Oct 2026: PIB backgrounder on safer, smarter inland navigation. Cargo reached 218 MMT in 2025–26, above the Maritime India Vision 2030 target of 200 MMT [1].
• Mar 2026: Foundation stones laid at Lachit Ghat, Guwahati for India's first riverine lighthouses on NW-2 (Brahmaputra) [2].
• 2025–26: Smaller National Waterways being made operational, e.g. Kopili River (NW-57) with its first cement cargo [7].

3. Background & Evolution

• Lighthouse Act, 1927: the earlier law on lighthouses. It was repealed by the Marine Aids to Navigation Act, 2021 (Sec. 52) [5].
• National Waterways Act, 2016: declared 111 NWs (5 existing + 106 new). PIB gives its date of effect as 12 Apr 2016; a later PIB note says enacted 25 Mar 2016 [8].
• 2020-21 to 2024-25: IWAI took up Comprehensive Development of NW-2 at a cost of ₹474 crore [4].
• 2021: Two laws:
• Marine Aids to Navigation Act, 2021 (Act No. 20 of 2021; assent 31 Jul 2021) [5].

• Inland Vessels Act, 2021, which replaced the Inland Vessels Act, 1917 to bring uniform national rules for inland navigation and safety [8].

• 8 Apr 2025: IWAI–DGLL MoU signed for four riverine lighthouses [2].

• 2025–26: Cargo rose from 29 MMT (2014–15) to 218 MMT (2025–26), a CAGR of 20.13% [1].

4. Core Static Facts

Item	Fact
National Waterways	111 NWs, 20,187 km, across 23 States + 4 UTs; 32 operational [1]
Nodal body for NW surveys	Inland Waterways Authority of India (IWAI) [1]
Parent ministry	Ministry of Ports, Shipping & Waterways (MoPSW); DGLL is its subordinate office [5]
Hydrography	Measuring and describing water bodies: bed structure, depth, flow direction, hazards. The main output is navigation charts [1]
Thalweg survey	Identifies and monitors the deepest navigable channel of a river stretch [1]
Thalweg survey coverage	22 NWs (as of Sep 2026), done weekly, fortnightly or monthly; also covers the Indian portion of the Indo-Bangladesh Protocol route [1]
Terminal & jetty surveys	Check depth and approach conditions near terminals and jetties [1]
Dredging	Removing sediment from the bottom of a water body to improve navigability [1]
Least Available Depth (LAD)	Minimum water depth in a navigation channel for a given stretch and period. It sets the permissible vessel draft and cargo capacity [1]
AtoN (Marine AtoN Act, 2021)	A device, system or service external to vessels that improves safe, efficient navigation. Examples: lighted buoys, radar beacons, lamp posts, channel markers, lighthouses, lightships [1]
Buoy types	Lateral, cardinal, isolated danger, safe water, special, emergency wreck marking [1]
Riverine lighthouses	4 on NW-2: Bogibeel (Dibrugarh), Pandu (Kamrup Metro), Silghat (Nagaon), Biswanath Ghat (Biswanath). Total about ₹84 crore; built by DGLL + IWAI [2]
Lighthouse completion timeline	Within 24 months of contract award [2]
Marine AtoN Act – Sec. 8	Central Government develops, maintains and manages general AtoN [5]
Marine AtoN Act – Sec. 23	Lets the Centre designate Heritage Lighthouses for educational, cultural and tourism use [5]
Marine AtoN Act – penalties	Obstructing an AtoN: up to 6 months / ₹1 lakh. Damaging one: up to 1 year / ₹5 lakh [6]
Marine AtoN Act – other provisions	Mandatory training certificate to operate AtoN or Vessel Traffic Services; AtoN dues on ships at Indian ports [6]

5. Multi-Dimensional Analysis

Economic

• Water freight costs about 1/3 of road and 1/2 of rail. It lowers logistics costs and frees highways for passengers and time-sensitive goods [1].
• Cargo growth of 29 to 218 MMT has already beaten the MIV-2030 target, so the sector has moved "from potential to performance" [1].
• Cargo on NW-2 rose 53% in 2024–25, which is why lighthouses were added there [2].

Scientific / Technological

• River beds keep shifting, so regular thalweg surveys and LAD reporting are what decide vessel draft and schedules [1].
• Digital platforms give real-time depth, route, vessel movement and weather information [1].
• The riverine lighthouses give long-range guidance for 24×7 navigation and also take weather observations [1][2].

Environmental

• Water transport emits a fraction of road transport's carbon, which supports India's low-carbon logistics goals [1].
• Repeated dredging is a trade-off: it keeps channels open but can disturb river ecology. It is best planned using survey data [1] (analytical point).

Geopolitical / Strategic

• The Indo-Bangladesh Protocol route is included in thalweg monitoring, which supports India–Bangladesh transit trade [1].
• NW-2 in Assam improves the North-East's connectivity, which is otherwise constrained by land routes [2].

Legal / Governance

• The 2021 AtoN Act replaced a colonial-era 1927 law. It covers modern AtoN and Vessel Traffic Services and adds heritage-lighthouse provisions [5][6].
• The Inland Vessels Act, 2021 created uniform national rules in place of the 1917 framework [8].

Administrative

• Two agencies are involved: IWAI (inland channels) and DGLL (lighthouses, AtoN). The riverine lighthouses are their joint project under an MoU [2].
• Only 32 of 111 NWs are operational, so turning declared waterways into working ones remains a bottleneck [1].

6. Recent Developments (last 12–18 months)

• 8 Apr 2025: IWAI–DGLL MoU for four riverine lighthouses on NW-2 [2].
• 2025: Indian Lighthouse Festival 3.0 in Visakhapatnam announced the four riverine lighthouse sites. A 77-m Lighthouse Museum is being built there [3].
• 2025–26: Kopili (NW-57) made operational; first cargo of 300 MT of cement from Chandrapur to Hatsingimari, Assam [7].
• Mar 2026: Foundation stones for the riverine lighthouses laid at Lachit Ghat, Guwahati [2].
• Sep 2026: Thalweg surveys cover 22 NWs [1].
• 16 Oct 2026: PIB reports 2025–26 cargo of 218 MMT at 20.13% CAGR [1].

7. Prelims Hooks

• India has 111 National Waterways covering 20,187 km; 32 are operational [1].
• The NWs span 23 States and 4 UTs [1].
• Inland waterway cargo was 218 MMT in 2025–26, up from 29 MMT in 2014–15 (CAGR 20.13%) [1].
• Maritime India Vision 2030 set an inland cargo target of 200 MMT, which has now been crossed [1].
• India's first riverine lighthouses are on the Brahmaputra (NW-2), at Bogibeel, Pandu, Silghat and Biswanath Ghat [2].
• The riverine lighthouses are a joint project of DGLL and IWAI, costing about ₹84 crore [2].
• Thalweg means the line of the deepest navigable channel of a river [1].
• LAD (Least Available Depth) decides the permissible vessel draft [1].
• AtoN are devices external to vessels under the Marine Aids to Navigation Act, 2021 [1].
• The Marine AtoN Act, 2021 repealed the Lighthouse Act, 1927 [5].
• The Marine AtoN Act allows "Heritage Lighthouses" to be designated (Sec. 23) [5].
• The Inland Vessels Act, 2021 replaced the Inland Vessels Act, 1917 [8].
• National Waterways are declared under the National Waterways Act, 2016 (5 existing + 106 new) [8].
• Kopili River is NW-57 [7].

8. What the 218 MMT Headline Does Not Tell You

• Most cargo moves on only a few waterways
• A parliamentary committee found that just 5 National Waterways carry 80% of all inland cargo [9].
• So a big national total can hide the fact that most of the 111 declared waterways carry very little.

• When you read "218 MMT", ask which waterways carried it, not just how much it adds up to.

• Tonnes are not the same as distance moved

• MMT (million metric tonnes) counts weight only. It does not say how far the cargo travelled.
• A short river crossing and a 1,000-km haul each add the same weight to the total.

• Freight economists use tonne-km (weight × distance) to measure how much freight a mode really moves. Look for it before you say waterways have "arrived".

• India's share of freight on water is still very small

• Inland waterways carry only about 2% of India's freight. The figure is 4% for the USA, 14% for China, 48% for Vietnam and 49% for the Netherlands [9].
• India's own target is 5% by 2030 [9].

• Beating the MIV-2030 tonnage target is real progress. But on modal share (the part of all freight each transport mode carries), India is less than halfway to its goal.

• "Operational" is a moving count

• In Sep 2023, only 23 of 111 NWs were operational [9]. The 2026 figure is 32 [1].
• That is 9 more in about three years. At that pace, most declared waterways will still not be working by 2030.

9. Why Water Depth, Not Lighthouses, Decides Whether Cargo Moves

• A ship cannot sail where the river is too shallow
• LAD (Least Available Depth) sets how deep a loaded ship can sit in the water. That depth is called its draft [1].
• In 2022, a parliamentary committee said water transport carries little freight mainly because of (i) too little depth for cargo ships and (ii) too few inland vessels [10].

• Lighthouses and buoys help ships move safely at night. They cannot add a single centimetre of depth.

• Dredging is a cost that never ends

• The committee found that dredging takes up a major part of both the building cost and the running cost [10].
• Rivers like the Brahmaputra are braided: they split into many shifting channels and drop huge loads of silt. So a channel dredged this year can fill up again by next season.

• That is why surveys must be weekly or monthly [1]. The bill keeps coming every year.

• Half-finished channels waste the money already spent

• The CAG (Comptroller and Auditor General, India's top public auditor) checked NW-3 in Kerala.
• It found that ₹73.97 crore spent on dredging and ₹21.46 crore spent on terminals gave no benefit, because two stretches were never finished [11].

• A waterway is only as useful as its shallowest, unfinished stretch.

• Few ships, poor road and rail links

• Companies stay away because of slow development, weak links to roads and railways, and the high cost of vessels and equipment [9].
• Even a well-marked channel stays empty if no ships can sail it and no truck or train can meet the cargo at the jetty.

10. What Dredging Costs the River and Its Dolphins

• The green argument has a blind spot
• Water freight emits less carbon per tonne than road freight [1]. But that only counts what comes out of the vessel's exhaust.

• It leaves out what happens to the river itself: the bed is dug up, silt gets stirred into the water, and vessel traffic adds noise underwater.

• This damage has already been seen on the Ganga

• The parliamentary committee recorded that dredging and construction on NW-1 disturbed the activity of the Gangetic dolphin [9].
• Dolphins find their way and their food by sound, so underwater noise and churned-up mud affect them directly.

• The committee asked IWAI to carry out environmental studies before developing any National Waterway [9].

• What it means for an answer

• Don't call waterways "green" without adding the river-ecology cost.
• A balanced answer says: low carbon per tonne, but only if dredging is kept to what is needed and planned around the river's wildlife.

11. Should India Really Try to Develop All 111 Waterways?

• The strongest case against: most of them may never pay
• MoPSW itself told Parliament that 63 waterways are not being developed because there is not enough money or staff [9].
• The committee went further. It said developing these 63 is unviable (not worth the cost) for now, and should not be taken up [9].

• The danger: money spread thin across many rivers produces several half-finished channels. The NW-3 audit shows what that looks like [11].

• The case for declaring them anyway

• Declaring a river under the National Waterways Act, 2016 puts it under the Centre and under IWAI. Surveys and planning can then start without each state having to agree first [8].
• Small waterways can carry real local cargo. Kopili (NW-57) started with a cement shipment [7].

• In the North-East, where hills make roads and railways hard to build, even a small waterway can matter a lot [2].

• An honest answer

• The critics are right on money. Developing all 111 at once is not realistic, and the government itself says so [9].
• But being declared costs little. The real mistake would be developing waterways without first checking for cargo demand, depth and ecology.
• The sensible path is to declare widely and develop selectively, choosing the waterways that have cargo, depth and road or rail links.

12. "Safer" Navigation — But Safer for Whom?

• The new tools mainly help cargo ships

• Lighthouses, buoys and digital depth platforms help big, well-equipped vessels on main channels [1][2].

• The deaths happen on small passenger boats

• The committee noted that boat capsizings increased over two years. The causes were overloading with passengers, poor-quality boats and badly balanced loads [9].
• None of these is solved by a lighthouse. They are problems of rules and enforcement.

• Enforcing them falls under the Inland Vessels Act, 2021, which sets the rules for registering inland vessels and keeping them safe [8].

• Small operators cannot use expensive systems

• The committee asked IWAI to build a simple mobile app for small operators who cannot afford advanced navigation systems [9].
• It also asked for local, state and regional weather-watch networks and warning systems [9].

13. Who Should Do What Next

• MoPSW: pay for dredging as a national asset
• Today, dredging costs are added to port charges. That makes Indian ports more expensive than their rivals [10].
• A parliamentary committee asked the government to treat shipping channels as a national asset and pay the full dredging cost [10].

• It pointed to the US, where the federal (central) government pays 50–90% of these costs [10].

• IWAI: check the river's ecology before developing a waterway

• Do environmental studies before any NW is developed, as the committee recommended after the dolphin damage on NW-1 [9].

• Use the weekly and monthly survey data [1] to dredge only where and when the depth actually falls short.

• IWAI with Railways and road agencies: plan the links from day one

• For newly declared waterways, plan the rail, road and port links at the planning stage, not after the jetty is built [9].

• This fits the goal of PM Gati Shakti: one shared plan for all transport modes.

• MoPSW: help shippers and operators make the switch

• Give financial incentives to shippers and build loading/unloading facilities at terminals [9].

• This tackles the high vessel cost and the shortage of ships that keep cargo on roads [9][10].

• State governments and IWAI: make small boats safer

• Enforce the Inland Vessels Act, 2021 rules against overloading and poor-quality boats [8][9].
• Roll out the low-cost mobile app and the local warning networks the committee asked for [9].

14. Anchors for Answers

• Data: Inland waterways carry about 2% of India's freight, against 14% in China, 48% in Vietnam and 49% in the Netherlands; the target is 5% by 2030 [9]
• Data: Just 5 National Waterways carry 80% of inland cargo [9]
• Data: MoPSW has put 63 of 111 NWs on hold because of money and staff shortages [9]
• Report/Committee: Standing Committee on Transport, Tourism and Culture, Development and Expansion of Existing and New National Inland Waterways (Sep 2023): calls 63 NWs unviable for now; dredging disturbed Gangetic dolphins on NW-1; boat capsizings rising [9]
• Report/Committee: Same committee, Progress made in Implementation of Sagarmala Projects (Mar 2022): low depth and too few vessels hold back water freight; fund dredging as a national asset [10]
• Report/Committee: CAG, Union Government (Commercial) Report No. 15 of 2016: ₹73.97 crore of dredging and ₹21.46 crore of terminals on NW-3 gave no benefit because stretches were left unfinished [11]
• Law/Case: National Waterways Act, 2016; Inland Vessels Act, 2021; Marine Aids to Navigation Act, 2021 [5][8]
• Comparison: USA: the federal government pays 50–90% of channel dredging costs, while India adds dredging costs to port charges [10]
• Scheme: Sagarmala (port-led development, which is where dredging funding is decided); PM Gati Shakti (planning rail and road links together with waterways)

15. Mains Relevance

• GS-III: Infrastructure (ports, waterways); investment models; environment and conservation.
• GS-I: Distribution of key natural resources (river systems); changes in geographical features (river morphology).
• GS-II: India and its neighbourhood (India–Bangladesh Protocol route).
• Question stems: 1. Inland waterways are moving from potential to performance. Discuss the role of navigation infrastructure — hydrographic surveys, AtoN and digital platforms — in this shift. 2. Only a fraction of India's 111 National Waterways are operational. Analyse the technical, ecological and institutional constraints, and suggest a way forward. 3. Examine how inland water transport can help India decarbonise logistics, with special reference to the North-East.

16. Related Topics to Study Next

• Maritime India Vision 2030 / Maritime Amrit Kaal Vision 2047: they set the cargo and modal-share targets.
• Sagarmala Programme: funds port-led development and NW-2 projects.
• Jal Marg Vikas Project (NW-1, Ganga): the flagship capacity-building project on India's busiest waterway.
• India–Bangladesh Protocol on Inland Water Transit and Trade: the route covered by IWAI's monitoring.
• PM Gati Shakti / National Logistics Policy: aims to shift freight to cheaper, greener modes.
• Brahmaputra river morphology and braiding: explains why surveys and dredging are needed so often.
• Lighthouse tourism / Heritage Lighthouses: part of the same 2021 Act.
• Inland Vessels Act, 2021: the safety and registration rules for inland vessels.

17. NCERT Concepts to Revise

• Inland Waterways Authority of India (Geography): IWAI is the statutory body that runs surveys, dredging and development of National Waterways, so it anchors the note.
• National Waterways Act 2016 (Geography): This law declared the 111 National Waterways; the gap between 111 declared and 32 operational drives the analysis.
• National Waterway 2 (Geography): The Brahmaputra stretch where India's first riverine lighthouses are being built and cargo rose 53%.
• Thalweg (Geography): Thalweg surveys track the deepest channel of a river, which decides where vessels can safely sail.
• Indo-Bangladesh Protocol Route (Geography): Thalweg monitoring covers this route, which gives the North-East a water link to the sea.
• PM Gati Shakti National Master Plan (Geography): The note recommends planning rail and road links with waterways from the start, which is what this plan does.

18. Common Errors / Trap Areas

• IWAI vs DGLL: IWAI develops inland waterways and runs the hydrographic surveys. DGLL handles lighthouses and AtoN. Both work under MoPSW, not MoRTH or Jal Shakti [1][2][5].
• Declared vs operational: 111 NWs are declared but only 32 are operational [1].
• Act years: The Lighthouse Act is 1927, the old Inland Vessels Act is 1917, and both new Acts are 2021. Don't mix up the old years [5][8].
• Thalweg vs LAD: The thalweg is a channel line; LAD is a minimum depth value for a given stretch and period [1].
• "First riverine lighthouse": these are on the Brahmaputra (NW-2), not the Ganga (NW-1) [2].