Water Management and Hydraulic Engineering

1.Harappan Water Engineering

• Construction and Engineering of the Great BathImportance 3/5
  Where is the Great Bath, and on which part of the city does it stand? Remember its dimensions and the steps at its ends. Know the layers used to build it, especially the waterproofing material, and what makes this notable. Understand the type of drain it had and where the drain led.
• Function and Interpretation of the Great BathImportance 2/5
  What is the most widely accepted view of the Great Bath's use? Understand how Marshall's view differs from the doubts raised by Kenoyer and others. What does its position on the citadel mound suggest about who used it? Is the accepted view a proven fact?
• Dholavira: Setting, Scale and Heritage StatusImportance 4/5
  Where is Dholavira, and why was storing water a matter of survival there? Remember the rainfall figure and the share of the city given to water storage. What is its heritage status, and in which year was it granted? Know whether its water system is part of the reason for that recognition.
• Dholavira's Reservoirs and ChannelsImportance 3/5
  How many reservoirs have been identified at Dholavira, and which two seasonal rivers fed them? Understand how water reached the reservoirs and moved between them (stone channels, gradients, sluice gates). What was the large drain around the city meant to prevent? Also know the use of check dams to slow runoff.
• Structure and Tidal Lock of the Lothal DockyardImportance 4/5UPSC 1998
  Where is the Lothal dockyard, and what claim does it hold in the history of port engineering? Remember its approximate size, its orientation and its inlet channel. Explain how its sluice gate kept ships afloat as the tide fell, and which modern dock principle this follows.
• The Dockyard Debate at LothalImportance 2/5
  Who identified the structure as a dockyard, and on what three kinds of evidence? What is the other reading of the structure, and how does the tide argument support it? Is the dockyard reading accepted by every scholar?
• Urban Drainage and Covered Drains of Mohenjo-DaroImportance 4/5
  How did drainage at Mohenjo-Daro link each house to the city system, step by step? Remember how the covered street drains were built and what provision allowed their upkeep. What does the system show about civic planning? Why is it counted among the earliest planned urban drainage systems known? Also know the drainage channels at Harappa.
• Ring WellsImportance 1/5
  What were ring wells, and how were they made? Are they a Harappan feature, or do they belong to the early historic towns? What were they used for? Also know how the wells at Mohenjo-Daro were lined.

2.Stepwells and Water Storage

• Regional Terms for Stepwells (Vav, Baoli, Kund)Importance 3/5
  What is the general English term for a stepwell? Remember which regions use the names Vav (or Vapi) and Baoli (or Baori), and where Kund is used. How does a Vav differ from a Kund in its usual plan and purpose?
• Classification of Stepwells by PlanImportance 1/5
  What are the four plan types of stepwells, and what marks each? Which is the commonest, and which is the most developed form of the Vav?
• Rani ki VavImportance 4/5UPSC 2024
  Who built Rani ki Vav, under which dynasty, where, and for what purpose? Remember its century, its storeys and approximate size, and its main sculptural theme. On which currency note does it appear? Know its UNESCO listing year and how it came to be rediscovered.
• Adalaj VavImportance 3/5
  Where is Adalaj Vav, who began it, in whose memory, and around which year? Who had it completed, and in what political setting? Understand how two architectural traditions blend here, and why it is used as an example of cultural synthesis. What is special about its plan and its entrance shafts?
• Chand BaoriImportance 3/5
  To whom is Chand Baori attributed, in which period, and where is it? Remember its storeys, steps and depth, the pattern of its steps, and the temple beside it. Why is it counted among the largest and deepest stepwells in India?
• Agrasen ki BaoliImportance 2/5
  Where is Agrasen ki Baoli? Is it really the work of the legendary Agrasen, or does the present structure belong to a later period? Remember its orientation, who protects it, and why it is dry today.
• Galleries, Symbolic Descent and Depth of StepwellsImportance 2/5
  What do the galleries of a many-storeyed Vav look like, and what carvings decorate them? What journey does the descent to the water symbolise? Understand how the depth of a stepwell was matched to the seasonal rise and fall of the water table.
• Ritual, Social and Gender Functions of StepwellsImportance 3/5
  Besides supplying water, what other roles did a stepwell play at the same time? What kind of sculptures decorate Vav walls? Be able to explain why stepwells are seen as spaces shaped around women's daily lives.
• Colonial Decline of StepwellsImportance 2/5
  Why did stepwells lose their purpose under colonial rule? Understand what happened to many of them afterwards, and why historians count this as a loss of cultural heritage.

3.Irrigation Systems

• Grand Anicut (Kallanai): Builder, Design and Working PrincipleImportance 4/5
  Who built the Grand Anicut, in which period, and across which river? Remember its approximate size and the material used without mortar. Is it a storage dam or a diversion structure? Understand how raising the river bed sends water into canals. What claim does it hold about continuous use, and what recognition does it have today?
• Arthur Cotton and the Grand AnicutImportance 2/5
  Who was Arthur Cotton, and what did he do to the Grand Anicut, and when? Which delta projects did it influence? Explain why his open acknowledgement of Karikala Chola's engineering is called a rare colonial recognition of Indian skill.
• Sudarshana Lake: Construction and RepairsImportance 4/5
  Where is Sudarshana Lake, and why is it called the best documented irrigation structure of ancient India? Remember who built it first and who added channels, and under which Maurya ruler each worked. Know each later repair: Rudradaman I's repair after a flood, and Skandagupta's repair through his governor and the governor's son.
• Junagadh Rock Inscription at GirnarImportance 4/5
  What is the Junagadh Rock Inscription, and which three rulers' records appear on the same rock? Remember the date of Rudradaman I's inscription. What makes it a landmark in the history of the Sanskrit language?
• Bhojtal (Bhopal Lake)Importance 2/5
  Who built Bhojtal, under which dynasty, and in which century? How was the lake made, and what did it do for farming? How do the Upper and Lower Lakes of Bhopal together form the Bhoj Wetland?
• Ahar-Pyne SystemImportance 3/5
  In which region is the Ahar-Pyne system found? Distinguish the ahar from the pyne, and understand how the two work together. How was it governed, which crop depends on it, and what was its condition in the 20th century?
• Eri SystemImportance 2/5
  In which state are eris found? Understand how eris are arranged one after another, and how they help recharge groundwater. Who managed the major eris?
• ZingImportance 2/5
  Where is the zing system used, and what feature of the climate makes it work? Understand how meltwater is stored at night and used by day, and how families share it. Remember the altitude range and the crops it supports.
• KuhlImportance 2/5
  From what sources do kuhls draw water, and where are they found? Understand how gravity moves the water, and how a water manager and seasonal rotation shape its distribution. Remember the districts where kuhls are used.
• Phad SystemImportance 2/5
  In which state, and in which river basin, is the phad system used? Understand how water is diverted and shared among the fields in rotation. How are water rights governed, and what is the phad-panchayat?
• Johad and Its RevivalImportance 3/5
  What is a johad, and how does it help groundwater beyond holding rainwater? Where is it found? Who led its revival, in which district, and in which decades? Remember the title he is known by and the international prizes he won.
• Bamboo Drip IrrigationImportance 3/5
  Where is bamboo drip irrigation practised? Understand how bamboo pipes carry water by gravity, and how the width of the pipe controls pressure. Remember the crops grown with it and the recognition it has received.
• ZaboImportance 2/5
  In which state is the zabo system found? Understand its three-part layout of land, from the forest to the fields, and why it counts as watershed management. Which Naga community and which village is it associated with?
• Karez (Qanat)Importance 2/5
  From which region does the karez (qanat) come? Understand how it reached India and under which rulers, and where in India karez survive. Understand how underground channels carry water from an aquifer, and why they lose little water to evaporation. How do they differ from surface canals?
• Tank Irrigation in South IndiaImportance 3/5
  What is tank irrigation, and which southern states depend on it? Understand the cascade arrangement of tanks. Remember the local names for tanks, the role of temple endowments (devadana lands) in managing them, and the tank building of the Vijayanagara period.
• Kakatiya Tank IrrigationImportance 3/5
  Which dynasty of Telangana is known for its network of tanks, and in which period did it rule? Remember one well-known tank linked to a temple. Explain how the tanks changed rain-fed farming, and how the resulting prosperity supported the dynasty's military and cultural power.
• Chola Canal SystemImportance 2/5
  When did the Cholas build canals fed by the Grand Anicut network? Explain how the farm surplus of the Cauvery delta paid for maritime expansion and temple building, with temples such as Brihadeshwara as examples.

4.Temple Hydraulics and Water Symbolism

• Engineering and Function of Temple TanksImportance 3/5
  What are the regional names for temple tanks? Understand how a tank was built for access, water control and overflow. What functions did it serve besides ritual bathing? What is a teppotsava?
• Srirangam Tank SystemImportance 2/5
  Where is the Srirangam temple complex, and how are its tanks placed within the complex? Which river feeds them? Remember the names of its main tanks, and understand how the tanks fit the temple's ritual calendar.
• Hampi PushkariniImportance 2/5
  To which dynasty's period does the Hampi Pushkarini belong? Remember its shape and building material, and its place in the royal complex. Which river fed Hampi's water system? Know its link to the UNESCO site at Hampi, and the other tank at the Vitthala Temple.
• Modhera Surya KundImportance 3/5
  Who built the Modhera Surya Kund, under which dynasty, and when? How is it linked to the Sun Temple, and what solar alignment does the complex follow? Remember its shape and the small shrines placed within it. Why is it not strictly a stepwell?
• Other Major Temple Tanks (Mahamakham, Swami Pushkarini, Teppakulam)Importance 2/5
  In which town is each of these tanks, and with which temple is each linked? Remember the festival or belief tied to each one, including how often the Mahamakham festival is held and the float festival linked to Teppakulam.

1. 1.

   Consider the following statements about the Great Bath of Mohenjo-Daro:
   1. Steps descend to its floor at only one end.
   2. A layer of natural bitumen was used to waterproof its sides and floor.
   Which of the statements given above is/are correct?

   1. A1 only
   2. B2 only
   3. CBoth 1 and 2
   4. DNeither 1 nor 2
2. 2.

   Consider the following statements about Dholavira:
   1. It is located in the Rann of Kutch in Gujarat.
   2. It lies in a high-rainfall zone receiving about 2,000 mm of rain a year.
   3. It was inscribed as a UNESCO World Heritage Site in 2014.
   How many of the statements given above are correct?

   1. AOnly one
   2. BOnly two
   3. CAll three
   4. DNone
3. 3.

   Which one of the following correctly describes the tidal-lock mechanism of the Lothal dockyard?

   1. AA fixed weir across the inlet channel that diverted tidal water into nearby irrigation canals
   2. BA sluice gate kept shut at high tide and opened at low tide, draining the basin so that ships were loaded on dry ground
   3. CA pump-operated wooden lock that raised the water level inside the basin as the tide fell
   4. DA sluice gate opened at high tide to admit ships and closed as the tide fell, holding a constant water level inside
4. 4.

   Consider the following statements about the drainage system of Mohenjo-Daro:
   1. Every house had its own drain connected to covered street drains.
   2. Inspection holes were provided only at the city periphery, where the collector drains lay.
   3. The fired-brick street drains flowed into larger collector drains at the city periphery.
   Which of the statements given above are correct?

   1. A1 and 2 only
   2. B2 and 3 only
   3. C1 and 3 only
   4. D1, 2 and 3
5. 5.

   Consider the following pairs:

   Stepwell	Location
   1. Rani ki Vav	Patan, Gujarat
   2. Adalaj Vav	Near Ahmedabad, Gujarat
   3. Agrasen ki Baoli	Jaipur, Rajasthan

   Which of the pairs given above is/are correctly matched?

   1. A1 and 2 only
   2. B2 and 3 only
   3. C1 and 3 only
   4. D1, 2 and 3
6. 6.

   Consider the following statements:
   Statement-I: Adalaj Vav is cited as an example of cultural synthesis, as it blends Hindu and Islamic architecture.
   Statement-II: Three entrance shafts of Adalaj Vav converge at the bottom.
   Which one of the following is correct in respect of the above statements?

   1. ABoth Statement-I and Statement-II are correct and Statement-II explains Statement-I
   2. BBoth Statement-I and Statement-II are correct and Statement-II does not explain Statement-I
   3. CStatement-I is correct but Statement-II is incorrect
   4. DStatement-I is incorrect but Statement-II is correct
7. 7.

   Consider the following statements about Rani ki Vav:
   1. It was built in the 11th century CE under the Solanki dynasty.
   2. It was inscribed as a UNESCO World Heritage Site in 2014.
   3. Vishnu iconography is dominant in its sculptures.
   4. It has five storeys.
   How many of the statements given above are correct?

   1. AOnly one
   2. BOnly two
   3. COnly three
   4. DAll four
8. 8.

   Match List I with List II in the context of the Sudarshana Lake of Girnar:

   List I (Person)	List II (Role)
   A. Tushaspha	1. Gupta ruler under whom the lake was repaired through his governor
   B. Rudradaman I	2. Western Kshatrapa ruler who had the lake repaired after flood damage
   C. Skandagupta	3. Yavana who added channels to the lake in the Mauryan period
   D. Chakrapalita	4. Son of the governor who carried out the Gupta-era repair

   Select the correct answer using the code given below:

   1. AA-2, B-3, C-1, D-4
   2. BA-3, B-2, C-4, D-1
   3. CA-1, B-2, C-3, D-4
   4. DA-3, B-2, C-1, D-4
9. 9.

   Consider the following statements about the Junagadh Rock Inscription at Girnar:
   1. Rudradaman I's inscription is dated to about 250 CE.
   2. Rudradaman I's inscription is the earliest known substantial composition in Classical Sanskrit prose.
   3. The same rock face carries inscriptions of Ashoka, Rudradaman I and Skandagupta.
   Which of the statements given above are correct?

   1. A1 and 2 only
   2. B2 and 3 only
   3. C1 and 3 only
   4. D1, 2 and 3
10. 10.

    Consider the following statements about the Grand Anicut (Kallanai):
    1. It was built by Karikala Chola across the Cauvery river near Thanjavur.
    2. It is a diversion structure and does not store water as a storage dam does.
    3. It is built of unhewn stone without mortar.
    How many of the statements given above are correct?

    1. AOnly one
    2. BOnly two
    3. CAll three
    4. DNone
11. 11.

    Consider the following pairs:

    Term	Description
    1. Vav (Vapi)	Term used in Rajasthan, Delhi, Uttar Pradesh and Madhya Pradesh
    2. Baoli (Baori)	Term used in North India
    3. Stepwell	Generic English term

    Which of the pairs given above is/are correctly matched?

    1. A1 and 2 only
    2. B2 and 3 only
    3. C1 and 3 only
    4. D1, 2 and 3
12. 12.

    With reference to Chand Baori, which one of the following is correct?

    1. AIt has 13 storeys and about 3,500 steps arranged in geometric patterns
    2. BIt has seven storeys and is about 64 m long and 20 m wide
    3. CIt stands in the Connaught Place area with a north-south orientation
    4. DIt was built by a Tughlaq ruler in the 14th century CE
13. 13.

    Consider the following statements about stepwells in India:
    1. They served simultaneously as water sources, rest stops for travellers, social gathering points and religious sites.
    2. The sculptures on Vav walls are mainly secular scenes of courtly life.
    3. The depth of a stepwell was fixed without regard to the seasonal fluctuation of the water table.
    How many of the statements given above are correct?

    1. AOnly one
    2. BOnly two
    3. CAll three
    4. DNone
14. 14.

    Consider the following statements about traditional irrigation systems:
    1. In the ahar-pyne system of Bihar, the pyne is a feeder canal that brings river water to the ahar.
    2. In the zing system of Ladakh, glacial meltwater is stored in tanks during the day and released at night.
    3. Bamboo drip irrigation in Meghalaya is a gravity-fed system in which pressure is regulated by pipe diameter.
    Which of the statements given above are correct?

    1. A1 and 2 only
    2. B2 and 3 only
    3. C1 and 3 only
    4. D1, 2 and 3
15. 15.

    Which one of the following dynasties of Telangana (12th-14th century CE) is particularly celebrated for a dense network of tanks, including the Ramappa Lake, that turned rain-fed agriculture into reliable irrigation?

    1. AThe Hoysalas
    2. BThe Yadavas of Devagiri
    3. CThe Chalukyas of Kalyani
    4. DThe Kakatiyas

1. 1.

   UPSC 2024

   Consider the following properties included in the World Heritage List released by UNESCO :
   1. Shantiniketan
   2. Rani-ki-Vav
   3. Sacred Ensembles of the Hoysalas
   4. Mahabodhi Temple Complex at Bodhgaya
   How many of the above properties were included in 2023 ?

   1. AOnly one
   2. BOnly two
   3. COnly three
   4. DAll four
2. 2.

   UPSC 1998

   Which of the following pairs are correctly matched?
   I. Lothal: Ancient dockyard
   II. Sarnath: First Sermon of Buddha
   III. Rajgir: Lion capital of Asoka
   IV. Nalanda: Great seat of Buddhist learning
   Select the correct answer using the codes given below:
   Codes:

   1. AI, II, III and IV
   2. BIII and IV
   3. CI, II and IV
   4. DI and II