Which traditional structures near Jaisalmer, Rajasthan, convert agricultural fields into rain-fed storage areas, letting water stand and moisten the soil?

Khadins. Khadins are found near Jaisalmer and convert farmland into rain-fed storage structures in an arid landscape. Johads are a separate structure, small earthen check dams found elsewhere in Rajasthan, that capture runoff to recharge groundwater. Read more: https://mcqquestion.com/articles/indgeo0165-traditional-rainwater-harvesting-methods-in-india/

Traditional Rainwater Harvesting Methods in India

Long before dams and tube-wells, Indians across very different climates had already solved the same problem: how to catch and keep rainwater.

This article covers the traditional rainwater harvesting methods that grew out of each region’s own terrain and rainfall pattern.

A small johad (locally called a nadi) in Laporiya village, Rajasthan — a traditional earthen check-dam that harvests rainwater for village use. Photo by Amar singh kangarot, CC BY-SA 4.0, via Wikimedia Commons.

📑 Contents

1Hill Regions: Guls and Kuls
2Rajasthan: Khadins and Johads
3Rooftop Tankas
4Test Yourself
5Bamboo Drip Irrigation
6The Gendathur Case Study
7Exam Wisdom: Tamil Nadu’s Mandate and the Shillong Paradox

🏛️ Must Know

Hill Regions: Guls and Kuls

What They Are Guls, also called kuls, are diversion channels used across the Western Himalayas. They carry water from streams and springs directly to farmland for irrigation.
Why They Work Hill and mountain terrain makes large storage structures impractical. Diverting flowing water directly suits the steep, uneven landscape far better.

Rajasthan: Khadins and Johads

Khadins Found near Jaisalmer, khadins are agricultural fields converted into rain-fed storage structures. They let water stand and moisten the soil in an otherwise arid landscape.
Johads Johads are small earthen check dams found across other parts of Rajasthan. They capture and store rainwater runoff, letting it slowly recharge groundwater.
Shared Purpose Both structures serve arid and semi-arid regions. Standing water there would otherwise evaporate before soaking into the ground or reaching a field.

📘 Good to Know

Rooftop Tankas

Where In Rajasthan’s Bikaner, Phalodi, and Barmer, most traditional houses had underground tanks called tankas for storing drinking water.
How Big One household tanka in Phalodi measured 6.1 metres deep, 4.27 metres long, and 2.44 metres wide, roughly the size of a large room.
How It Worked A pipe connected the tanka to the house’s sloping roof. The first rain of the season was discarded, since it just cleaned the roof and pipe, and only later showers were collected.
Why It Mattered Rainwater, locally called palar pani, was considered the purest form of natural water. Tankas kept it usable right through to the next monsoon.

Test Yourself

✅ Test Yourself

🎲 More Indian Geography Practice

💎 Great to Know

Bamboo Drip Irrigation

Where and How Old In Meghalaya, a roughly 200-year-old system taps stream and spring water using bamboo pipes.
The Mechanism About 18-20 litres of water enter the bamboo pipe system and travel hundreds of metres. By the plant, the flow reduces to just 20-80 drops per minute.
Fine Control Farmers control the flow simply by manipulating the position of individual bamboo pipe sections, delivering water precisely to each plant’s roots.

The Gendathur Case Study

The Village Gendathur, a remote village in Mysuru, Karnataka, has installed rooftop rainwater harvesting in nearly 200 households.
The Numbers Gendathur gets about 1,000 mm of annual rainfall. At 80% collection efficiency across roughly 10 fillings, each house collects about 50,000 litres a year.
The Total Across all 200 houses, the village harvests about 1,00,000 litres of rainwater a year. This has earned Gendathur a reputation as unusually rainwater-rich for a poor, remote village.

📝 Exam Point of View

Exam Wisdom: Tamil Nadu’s Mandate and the Shillong Paradox

Tamil Nadu First Tamil Nadu was the first Indian state to make rooftop rainwater harvesting compulsory for all houses. A 2003 ordinance set legal penalties for defaulters.
Watch For Don’t confuse this with Tamil Nadu’s earlier 2001 rainwater harvesting scheme. The 2003 ordinance is what made the practice legally compulsory.
The Shillong Paradox Cherrapunjee and Mawsynram, just 55 km from Shillong, receive the highest rainfall in the world. Yet Shillong itself faces acute water shortage, and rooftop harvesting there supplies 15-25% of household water needs.