Radcliffe Line

Topic: India and her Neighbours · NCERT: Beyond NCERT

Meaning

The Radcliffe Line is the boundary drawn by Sir Cyril Radcliffe and announced on 17 August 1947, two days after Independence. It split the British Indian provinces of Punjab (in the west) and Bengal (in the east) between India and Pakistan.

It matters because it is the base of two of India's land borders today: the India–Pakistan border and the India–Bangladesh border. Bangladesh was then East Pakistan.

Explanation

Cause → process → result

• Cause: Partition (1947)
• British India was split into two countries, India and Pakistan.

• Pakistan was founded on a religious basis. So a line had to be drawn through provinces where both communities lived.

• Process: the Radcliffe Award

• Sir Cyril Radcliffe drew the line across two provinces, Punjab and Bengal.

• The line was made public on 17 August 1947, not on 15 August. So for two days after Independence, people near the line did not know which country they were in.

• Result: one line, two borders

• The western part, in Punjab, became part of the India–Pakistan border.
• The eastern part, in Bengal, became the border with East Pakistan. Today it is the India–Bangladesh border.

Its place in the India–Pakistan border

• The India–Pakistan border is about 3,323 km long. It runs along five Indian units. From south-west to north they are Gujarat, Rajasthan, Punjab, Jammu and Kashmir (UT) and Ladakh (UT).
• From Gujarat to Jammu, this line serves as the International Border (IB). An IB is a line that both countries accept.

• Most of this stretch is fenced and floodlit.

• North of Jammu, the IB gives way to the Line of Control (LoC). The LoC is only a military control line and not an agreed border.

The three lines from south to north

Line	Origin	Where	Status
Radcliffe Line / IB	Radcliffe Award, 17 Aug 1947	Gujarat → Jammu (also Bengal)	International Border, fenced
LoC (~740 km)	Karachi ceasefire line 1949, renamed by Simla 1972	Jammu and Kashmir, up to NJ9842	Military control line
Siachen area	Operation Meghdoot, April 1984	North of NJ9842, eastern Karakoram	Held by India; Pakistan disputes it

Weak points left open

• Sir Creek (southern end): a 96 km tidal estuary in the Rann of Kachchh, between Gujarat and Sindh. A tidal estuary is a river mouth where seawater moves in and out with the tides.
• India's position is the thalweg principle. The thalweg is the line along the deepest part of the channel, so the boundary would run mid-channel.
• Pakistan's position is the east bank ("green line"). That would put the whole creek in Pakistan.

• The land part of the Rann was settled by the Rann of Kachchh tribunal (1968). The creek itself is still disputed.

• Northern end: the agreed line stops in the Jammu stretch. Further north there is only the LoC, which ends at grid point NJ9842.

Where it occurs

• Western sector (India–Pakistan):
• Punjab (India) and Pakistan's Punjab. This is the part Radcliffe divided.
• The IB stretch runs from Gujarat through Rajasthan (Thar Desert) and Punjab to the Jammu stretch of J&K.

• Its southern end is Sir Creek, in the Rann of Kachchh between Gujarat and Sindh.

• Eastern sector (India–Bangladesh): Bengal was split into West Bengal (India) and East Bengal. East Bengal became East Pakistan and is now Bangladesh.

• Crossings on the line:
• The Kartarpur Corridor crosses the IB. It runs from Dera Baba Nanak (Gurdaspur district, Punjab) to Gurdwara Darbar Sahib, Kartarpur, in Pakistan.

• The corridor agreement was signed at Zero Point on the International Boundary, Dera Baba Nanak, on 24 October 2019 [3].

• Map reference: NCERT Class 7, Fig. 2.5 shows the India–Pakistan border.

Don't confuse with

• Line of Control (LoC): the Radcliffe Line is an accepted International Border. The LoC (~740 km, in J&K) is only a military control line. It began as the Karachi ceasefire line (1949) and was renamed by the Simla Agreement (1972).
• Durand Line: the Durand Line (1893, Abdur Rahman Khan and Sir Mortimer Durand) is the Afghanistan–Pakistan boundary. The Radcliffe Line (1947) is the India–Pakistan/Bangladesh boundary.
• McMahon Line: the McMahon Line is the boundary between India and China (Tibet) in the east. The Radcliffe Line does not touch China.
• Partition date vs Award date: Independence came on 15 August 1947. The Radcliffe Line was announced on 17 August 1947.

Prelims Hooks

• The Radcliffe Line was announced on 17 August 1947, two days after Independence. Trap: it was not announced on 15 August.
• It divided Punjab and Bengal. So it is the base of both the India–Pakistan and India–Bangladesh borders.
• Order of Indian units on the India–Pakistan border (~3,323 km), south-west to north: Gujarat → Rajasthan → Punjab → J&K → Ladakh. Trap: Himachal Pradesh is not on this border.
• The IB (Radcliffe Line) runs from Gujarat to Jammu. North of that is the LoC, which ends at NJ9842.
• Sir Creek, at the southern end, is a 96 km tidal estuary between Gujarat and Sindh. India backs the thalweg (mid-channel) principle. Pakistan backs the east bank.
• The Kartarpur Corridor crosses the IB from Dera Baba Nanak (Gurdaspur). It opened on 9 November 2019 [4].

Mains Points

• A boundary drawn in a hurry leaves problems behind:
• The line was announced only after Independence and cut through two densely settled provinces.
• Its southern end (the Sir Creek thalweg question) and the lines further north (the LoC, Siachen) were left unsettled.

• Results: quarrels over the maritime boundary and the EEZ (the sea zone up to 200 nautical miles from the coast where a country controls fishing, oil and gas), arrests of fishermen, and the Siachen standoff. This is a good GS-I example of political boundaries creating regional problems.

• The line cut across a single river system (GS-III):

• Splitting Punjab placed one river basin, the Indus system, in two countries.
• Sharing its water took nine years of talks and ended in the Indus Waters Treaty (1960) [2]. The eastern rivers (Ravi, Beas, Satluj) went to India, and the western rivers (Indus, Jhelum, Chenab) mainly to Pakistan.

• India placed the treaty "in abeyance" (on hold) in April 2025 [1]. This shows that upstream–downstream water sharing is still tied to the boundary.

• Divided heritage and border management:

• The line left shrines such as Kartarpur, Katas Raj (Pakistan's Punjab) and Hinglaj Mata (Balochistan) on the Pakistan side.
• India answered with fencing and floodlighting along most of the IB. At the same time, it opened a permit-based corridor for pilgrims: up to 5,000 a day, same-day return [3]. India suspended the corridor from 7 May 2025.

Related concepts

• India-Pakistan border
• Line of Control
• Siachen Glacier
• Sir Creek
• Kartarpur Corridor
• Durand Line
• Wakhan Corridor
• Khyber Pass

Read more

• Pakistan and Afghanistan: the north-western frontier