National Waterway 1

Also called: NW-1 · Topic: Transport and Communication in India · NCERT: Class 10, Ch 7 "Lifelines of National Economy"; Class 12, Ch 7 "Transport and Communication"

Meaning

National Waterway 1 (NW-1) is the Ganga–Bhagirathi–Hooghly river route from Prayagraj (Allahabad) to Haldia. It is 1,620 km long and runs through Uttar Pradesh, Bihar, Jharkhand and West Bengal. It is the longest and most important of India's five original National Waterways, and it serves the crowded Ganga plain. It is also the main focus of the World Bank-aided Jal Marg Vikas Project, which is bringing cheap, low-pollution cargo transport back to the Ganga.

Explanation

The river that makes NW-1

• Where the river starts:
• The Bhagirathi rises at Gaumukh (Gangotri glacier, Uttarakhand).

• It joins the Alaknanda at Devprayag. Together they form the Ganga.

• Where it goes:

• The Ganga flows east across UP and Bihar.
• Near Farakka (West Bengal) the river splits in two.
• The Bhagirathi–Hooghly branch goes south past Kolkata to the Bay of Bengal.

• The main stream, the Padma, flows into Bangladesh.

• The eastern end: Haldia sits on the Hooghly estuary in Purba Medinipur district, West Bengal. An estuary is the wide mouth where a river meets the sea.

• Type of waterway: NW-1 is a canalised waterway. This means a river split into calmer sections by locks (gated chambers that raise or lower boats) and dams. The Farakka lock is the example [2].

Three sections and why depth changes

• The sections, from east to west:

Section	Length	Depth
Haldia–Farakka	560 km	Deepest; the tidal Hooghly
Farakka–Patna	460 km	Medium
Patna–Prayagraj	600 km	Shallowest

• Depth falls as you go upstream (towards the source):
• Near the sea, tides bring in extra water, so the Hooghly stays deep.
• Further upstream, a lot of river water is taken away by canals and barrages for irrigation.

• So the river is shallow in the dry season, and long stretches become hard for boats to use.

• What this means for boats:

• Mechanised boats (boats with engines) go only up to Patna.
• Ordinary boats can go up to Haridwar.
• Even today, large cruise vessels usually run only up to Patna. Two things stop them: low depth, and pontoon bridges (floating bridges laid across the river) [2].

What a working waterway needs, and how NW-1 is getting it

• Three basic needs [2]:
• a fairway: a channel wide and deep enough for boats
• terminals linked to road and rail

• navigational aids: buoys, lights and markers

• Dredging keeps the fairway deep. Dredging means scooping sand and silt off the riverbed [2].

• Jal Marg Vikas Project (JMVP): a project to carry more cargo on the Varanasi–Haldia stretch (1,390 km), with technical and money support from the World Bank [2].
• Cost: ₹5,061.15 crore. Target date: 30 June 2026 [2].
• Assured depth of 2.2–3.0 m for at least 330 days a year [2].

• This lets bigger vessels of 1,500–2,000 DWT use the river. DWT (deadweight tonnage) is how much weight a ship can carry [2].

• Infrastructure now working [2]:

• Multi-Modal Terminals at Varanasi (UP), Sahibganj (Jharkhand) and Haldia (WB). "Multi-modal" means goods can switch easily between boat, rail and road.
• An Inter-Modal Terminal at Kalughat (Bihar).
• A new navigation lock at Farakka.

• Quick Pontoon Opening Mechanism (QPOM): a pontoon bridge now opens for a passing vessel in about 5 minutes.

• Result: cargo on NW-1 rose by about 220%, from 5.05 MMT (2014-15) to 16.38 MMT (2024-25) [2][3].

• Arth Ganga (JMVP-II): the part of JMVP that aims to improve people's earnings along the river. 66 community jetties were working along NW-1 by April 2026, used by about 1.22 lakh people daily [2].

Where it occurs

• Route: Prayagraj (UP) → Varanasi (UP) → Patna (Bihar) → Sahibganj (Jharkhand) → Farakka (WB) → Kolkata → Haldia (WB).
• States: Uttar Pradesh, Bihar, Jharkhand, West Bengal.
• Key nodes:
• Varanasi: multi-modal terminal, and the starting point of the Ganga Vilas cruise
• Kalughat (Bihar): inter-modal terminal
• Sahibganj (Jharkhand): multi-modal terminal
• Farakka (WB): where the river splits, with a navigation lock

• Haldia (WB): multi-modal terminal on the Hooghly estuary

• Who runs it: the Inland Waterways Authority of India (IWAI), set up in 1986 under the IWAI Act, 1985. It works under the Ministry of Ports, Shipping and Waterways, with its headquarters in Noida (UP) [2].

• Legal status: NW-1 was first declared by its own Act. It now sits among the 111 NWs of the National Waterways Act, 2016 [2].
• Links beyond NW-1:
• From Kolkata–Haldia, the Indo-Bangladesh Protocol Route (1972) runs through the Sundarbans and Bangladesh rivers to NW-2 (Brahmaputra) and NW-16 (Barak) in Assam.
• The Jalvahak Cargo Promotion Scheme (launched 15 December 2024) pays back up to 35% of operating cost for scheduled cargo on NW-1, NW-2 and NW-16 via the IBP route [2].
• MV Ganga Vilas, called the world's longest river cruise, left Varanasi on 13 January 2023 [5]. It reached Dibrugarh (Assam) on 28 February 2023, covering about 3,200 km in 51 days through 27 river systems in India and Bangladesh [4].

Don't confuse with

• NW-1 vs JMVP stretch: NW-1 runs Prayagraj–Haldia (1,620 km). JMVP covers only Varanasi–Haldia (1,390 km) [2].
• NW-1 vs NW-2: NW-1 (Ganga) is a canalised waterway with the Farakka lock. NW-2 (Brahmaputra, Sadiya–Dhubri, 891 km, all in Assam) is an open river waterway, a natural river that flows freely [2].
• Bhagirathi (headstream) vs Bhagirathi–Hooghly (NW-1 channel): the Bhagirathi that rises at Gaumukh is the upper headstream in Uttarakhand. The Bhagirathi–Hooghly on NW-1 is the branch that leaves the Ganga near Farakka and flows south to the sea.
• Hooghly vs Padma: after Farakka, NW-1 follows the Hooghly south through West Bengal. The Padma is the main stream that enters Bangladesh, and it is not part of NW-1.

Prelims Hooks

• NW-1 = Ganga–Bhagirathi–Hooghly, Prayagraj–Haldia, 1,620 km. It is the longest of the original five (NW-1 > NW-4 at 1,078 km > NW-2 at 891 km).
• Sections from east to west: Haldia–Farakka 560 km → Farakka–Patna 460 km → Patna–Prayagraj 600 km. The longest section is Patna–Prayagraj, which is also the shallowest.
• Navigability limits: mechanised boats up to Patna; ordinary boats up to Haridwar.
• JMVP terminal–state pairs: Varanasi – UP; Sahibganj – Jharkhand; Haldia – West Bengal; Kalughat (inter-modal) – Bihar [2].
• Trap: JMVP is World Bank-aided, and it covers Varanasi–Haldia, not Prayagraj–Haldia [2].
• States crossed: UP, Bihar, Jharkhand, West Bengal. Jharkhand is the one aspirants tend to forget, and it is where Sahibganj lies.

Mains Points

• Why NW-1 declined (GS-I/III):
• Railways (from 1853) and roads gave faster transport that ran in every season.
• Canals and barrages took Ganga water for irrigation, so less water flowed downstream.

• Siltation and low dry-season flow made the upper stretches shallow. Today mechanised boats still stop at Patna.

• Why it is being revived (GS-III, infrastructure and environment):

• Water transport is the cheapest, most fuel-efficient mode, and suits heavy, bulky cargo such as coal, cement and food grains.
• JMVP gives an assured depth of 2.2–3.0 m, multi-modal terminals, the new Farakka lock and QPOM [2].
• Cargo on NW-1 rose about 220% between 2014-15 and 2024-25 [2][3].

• Through the Indo-Bangladesh Protocol Route and Jalvahak, NW-1 links to the landlocked North-East without passing through the Siliguri Corridor [2].

• Problems still left:

• Depth is low beyond Patna, and pontoon bridges get in the way of vessels [2].
• Silt keeps coming back, so dredging never stops.
• Dredging may harm river ecology, such as the habitat of the Gangetic dolphin.
• Boats often find few return cargoes, so many trips come back empty.

Related concepts

• Inland waterways
• Inland Waterways Authority of India
• National Waterways Act 2016
• National Waterway 2
• National Waterway 3
• National Waterway 4
• National Waterway 5
• Indo-Bangladesh Protocol Route

Read more

• Inland waterways and the national waterways