The Indus (Harappan) Civilisation: Town Planning, Sites, Economy & Decline

Start Here — Why the Harappans Are High-Yield

🎯 Exam priority: High-yield. This is one of the most-tested Ancient topics, and in 2025 even Mains asked the "salient features of Harappan architecture". Go deep: master the site-to-feature matches (the prelims workhorse), the town-planning details, and the decline debate. Don't skim it.

Around 2500 BCE, while most of the subcontinent was still living in Chalcolithic villages, the north-west produced something astonishing: India's first cities — planned on a grid, drained by covered sewers, fed by huge granaries, and trading by sea with Mesopotamia. This is the Harappan (or Indus Valley) civilisation, the largest cultural zone of its age.

Discovery, Extent & the Major Sites

The civilisation is named Harappan after the first site excavated, at Harappa (West Punjab, Pakistan) in 1921. It is also called the Indus Valley civilisation after the river along which its great cities grew.

• A vast triangle. It covered parts of Punjab, Sindh, Baluchistan, Gujarat, Rajasthan and the fringe of western UP — from Jammu in the north to the Narmada estuary in the south, and from the Makran coast to Meerut. At roughly 1.3 million sq km it was larger than contemporary Egypt and Mesopotamia combined.

• Over 250 sites, but only a handful of true cities. The classic six are Harappa, Mohenjo-daro, Chanhudaro, Lothal, Kalibangan and Banawali; later excavations added great centres like Dholavira and Rakhigarhi.

UPSC's favourite is the site-to-feature match — learn this table cold:

Town Planning — the Grid, the Citadel & the Great Bath

The hallmark of the Harappans was town planning. Each major city was laid out in two parts:

• The citadel (acropolis) — a raised, fortified western mound, probably for the ruling class and key public buildings.

• The lower town — the larger residential area of brick houses for ordinary people.

Streets followed a grid system, cutting across one another at right angles and dividing the city into rectangular blocks — true of settlements of every size.

Signature structures

• The Great Bath at Mohenjo-daro — a beautifully brick-built tank (about 12 × 7 metres, 2.4 m deep) on the citadel, watertight, with steps, side rooms and a drain. Almost certainly used for ritual bathing.

• Granaries — the largest building at Mohenjo-daro is a great granary; Harappa had a block of six-plus-six granaries near the river, with circular threshing floors (wheat and barley were found in the cracks).

• Burnt bricks. Unlike Egypt (which mostly used dried bricks), the Harappans used kiln-baked bricks on a huge scale, in a remarkably standard ratio.

The Drainage System & Civic Life

If one feature defines Harappan genius, it is water management. Almost every house — big or small — had its own courtyard, bathroom and often a well (especially at Kalibangan). Waste water ran from the houses into covered street drains built of brick or stone slabs and fitted with manholes for cleaning.

No other ancient civilisation gave so much attention to health and sanitation; the Harappan drainage system is virtually unique in the Bronze Age.

Dholavira takes this further, with an elaborate system of reservoirs, dams and channels to harvest scarce water in the arid Rann of Kutch — which is exactly why UPSC singled it out in a prelims question.

Economy — Agriculture, Crafts & Trade

Agriculture

The flood plains of the Indus, enriched by annual silt (as the Nile enriched Egypt), let villages grow wheat and barley (sown after the November floods, reaped in April), plus sesame, mustard and peas; Lothal in Gujarat even grew rice by c. 1800 BCE. A ploughed field with criss-cross furrows survives at Kalibangan. Above all, the Harappans were the earliest people to grow cotton — the Greeks later called it sindon, from Sindh.

Crafts & technology (a Bronze-Age culture)

They knew bronze — copper (from the Khetri mines of Rajasthan) alloyed with tin (brought with difficulty from Afghanistan) — though tools were not abundant. They excelled at bead-making, seal-cutting, weaving (cotton and wool), brick-laying, boat-building and goldsmithy.

Trade

• There was no metallic money — exchange was by barter. They used carts with solid wheels and practised coastal navigation.

• They traded with Rajasthan, Afghanistan, Iran and Mesopotamia — many Harappan seals turn up there. Mesopotamian records (c. 2350 BCE) call the Indus region Meluha, with two trading stations, Dilmun (Bahrain) and Makan, in between.

• Lothal had a dockyard — a tidal port — underlining maritime trade.

• Weights & measures were standardised on a binary system using 16 and its multiples (16, 64, 320…) — the "16-anna rupee" echoed it into modern times.

Society, Polity & Religion

Polity — rule without temples or palaces

Strikingly, no temples or grand palaces have been found at any Harappan site — a sharp contrast with Egypt and Mesopotamia, where priests ruled. This suggests the Harappans were governed not by priest-kings but perhaps by a class of merchants, more concerned with commerce than conquest.

Religion

• Mother Goddess: numerous female terracotta figurines — one shows a plant growing from a woman's womb — point to worship of the earth as a fertility goddess.

• The Pashupati seal: a seal shows a horned, three-faced male god seated like a yogi, surrounded by an elephant, tiger, rhinoceros and buffalo — recalling the later Shiva (Pashupati, "lord of animals"). Phallus (linga) and yoni worship also appear, prefiguring Shaiva practice.

• Nature worship: the pipal tree and the humped bull were revered; amulets suggest belief in evil spirits.

No idols sat in temples, and because the script is unread, much of their belief stays uncertain.

Script, Seals & Art

• The script is undeciphered. It is pictographic (about 250–400 signs), not alphabetic, usually written right-to-left (boustrophedon in places), and survives only in short inscriptions on seals — so we cannot read Harappan literature or beliefs. It is an indigenous invention, unrelated to Egyptian or Mesopotamian scripts.

• Seals are the finest Harappan craft — about 2,000 have been found, mostly steatite, engraved with animals (the one-horned "unicorn" bull, the humped bull, tiger, rhinoceros, elephant) and a few signs; they probably marked private property and trade goods.

• Art: the bronze "Dancing Girl" (Mohenjo-daro) and the steatite "Priest-King" are the masterpieces; terracotta toys and figurines were the art of the common people. Harappan art in stone is otherwise modest.

Decline & End — Why the Cities Fell

The mature civilisation flourished roughly between 2500 and 1750 BCE (modern dating often narrows the mature phase to about 2600–1900 BCE). Around 1750 BCE, Harappa and Mohenjo-daro were abandoned and the culture faded gradually, lingering in degenerate form in Gujarat, Rajasthan and western UP. There is no single agreed cause:

The old "Aryan invasion / massacre at Mohenjo-daro" idea is now largely rejected — there is no evidence of large-scale conflict, and the Rig Vedic Aryans settled the same Sapta Sindhu region only later. Most scholars today favour a combination of climate change and the drying of the Ghaggar-Hakra (Saraswati) river system, which triggered a slow de-urbanisation rather than a sudden collapse; Painted Grey Ware and the Cemetery-H culture mark the later, post-urban phase.

Why this matters for UPSC

• Prelims drills the site-to-feature table (Lothal = dockyard, Kalibangan = ploughed field, Dholavira = water management) and "what characterised the Harappans" (male & female deities, no temples, no horse-chariots).

• Mains asks the town-planning legacy for modern urbanisation (2014), the salient features of Harappan architecture (2025), and the decline debate.

Further Reading

• Standard NCERT-level texts and reference books on ancient, medieval and cultural Indian history (any UPSC reading list).

Test Yourself: Practice Questions & PYQs

The Harappan questions are mostly site-to-feature matches and 'what characterised them'. Commit to an answer before revealing each one.

Practice Questions

Q1. Which Harappan site is famous for its tidal dockyard, indicating maritime trade?

• (a) Chanhudaro

• (b) Lothal

• (c) Banawali

• (d) Kalibangan

Q2. A ploughed field with criss-cross furrows from the pre-Harappan phase was found at:

• (a) Kalibangan

• (b) Surkotada

• (c) Dholavira

• (d) Mohenjo-daro

Q3. The site renowned for advanced water management — reservoirs, dams and a large 'signboard' — is:

• (a) Harappa

• (b) Chanhudaro

• (c) Rakhigarhi

• (d) Dholavira

Q4. The Great Bath is located on the citadel of:

• (a) Harappa

• (b) Mohenjo-daro

• (c) Kalibangan

• (d) Lothal

Q5. Which statement about Harappan religion/society is correct?

• (a) They worshipped both male and female deities

• (b) They built great temples and palaces

• (c) They were ruled by priest-kings from temples

• (d) They used horse-drawn chariots in war

Q6. Cotton was first produced by the Harappans; the Greeks later called it 'sindon', a word derived from:

• (a) Sanskrit 'sutra'

• (b) Dilmun

• (c) Meluha

• (d) Sindh

Q7. The Harappan system of weights was based on:

• (a) Base-12 (dozen) units

• (b) No standard system

• (c) A binary system using 16 and its multiples

• (d) A decimal (base-10) system

Q8. The Harappan script is best described as:

• (a) Identical to the Mesopotamian cuneiform

• (b) Written only on copper plates

• (c) An undeciphered, mainly pictographic script on short seal inscriptions

• (d) A deciphered alphabetic script

UPSC Previous Year Questions (PYQs)

Two genuine UPSC Prelims questions on the Harappans. Explanations in our own words.

Q9. Which of the following characterises/characterise the people of the Indus Civilization? (1) They possessed great palaces and temples. (2) They worshipped both male and female deities. (3) They employed horse-drawn chariots in warfare. Select the correct answer: (UPSC Prelims 2013)

• (a) None

• (b) 2 only

• (c) 1, 2 and 3

• (d) 1 and 2 only

Q10. Which one of the following ancient towns is well known for its elaborate system of water harvesting and management by building a series of dams and channels and creating water reservoirs? (UPSC Prelims 2021)

• (a) Rakhigarhi

• (b) Dholavira

• (c) Ropar

• (d) Kalibangan

Mains Practice Questions

Use these to frame full-length answers. You don't have to answer one exactly — they show the angles UPSC tests, so let them guide which points you cover.

• Account for the decline of the Harappan civilisation, critically evaluating the competing explanations.

• What do the religion and town-planning of the Harappans tell us about the nature of their society and polity?

• Evaluate the achievements of Harappan town-planning and their relevance to present-day urbanisation.

Mains PYQs — Last 10 Years (UPSC GS-I)

The exact questions UPSC has actually asked on this topic over the last decade. Practise writing full-length answers to these.

• Discuss the salient features of the Harappan architecture. (UPSC GS-I, 2025)

• To what extent has the urban planning and culture of the Indus Valley Civilization provided inputs to the present-day urbanization? Discuss. (UPSC GS-I, 2014)

• The ancient civilization in the Indian sub-continent differed from those of Egypt, Mesopotamia and Greece in that its culture and traditions have been preserved without a breakdown to the present day. Comment. (UPSC GS-I, 2015)