UPSC Disaster Management – Chapter 6: Floods and Urban Flooding (20 MCQs)

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UPSC Disaster Management – Chapter 6: Floods and Urban Flooding (20 MCQs) – 20 questions, subject: Disaster Management. Every question has the correct answer with a one-line explanation; tap "Show Answer". Free practice for TNPSC, UPSC, SSC, Bank and RRB exams – Shanmugam IAS Academy, Coimbatore.

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1.  

Flood forecasting on Indian rivers is mainly done by the:

Correct Answer: C [Central Water Commission]

Explanation:

The Central Water Commission runs India's river flood-forecasting network, issuing level and inflow forecasts at a few hundred stations.

2.  

The Chennai floods of December 2015 were worsened by a large release of water from which reservoir, whose management was later criticised by the CAG?

Correct Answer: B [Chembarambakkam]

Explanation:

heavy rain combined with a large release from Chembarambakkam flooded much of Chennai; the CAG criticised how releases were managed.

3.  

The Ganga Flood Control Commission is located at:

Correct Answer: D [Patna]

Explanation:

The Ganga Flood Control Commission was set up in 1972 with its headquarters at Patna, Bihar, to plan flood management in the Ganga basin.

4.  

"Drainage and embankments" are placed in the:

Correct Answer: D [State List]

Explanation:

Entry 17 of the State List covers water, including drainage and embankments, subject to Union List Entry 56 on inter-State rivers.

5.  

The 2008 Kosi breach occurred at:

Correct Answer: A [Kusaha in Nepal]

Explanation:

On 18 August 2008 the Kosi's eastern embankment breached at Kusaha in Nepal, and the river flowed into an old channel in Bihar.

6.  

The nodal ministry for urban flooding is the Ministry of:

Correct Answer: C [Housing and Urban Affairs]

Explanation:

The Ministry of Housing and Urban Affairs is the nodal ministry for urban flooding; Jal Shakti handles riverine floods.

7.  

NDMA's first separate guidelines on urban flooding were issued in:

Correct Answer: C [2010]

Explanation:

NDMA issued its Management of Urban Flooding guidelines in 2010, the first guidelines treating urban floods separately from riverine floods.

8.  

A Model Flood Plain Zoning Bill was circulated to the States in:

Correct Answer: D [1975]

Explanation:

The Union circulated a Model Flood Plain Zoning Bill to the States in 1975; only a few States have enacted such laws.

9.  

The Brahmaputra Board was set up under an Act of:

Correct Answer: A [1980]

Explanation:

The Brahmaputra Board was created by the Brahmaputra Board Act, 1980, for flood control in the Brahmaputra and Barak valleys.

10.  

Consider the following statements:

1. Embankments can raise river beds by trapping silt.
2. Flood-plain zoning regulates land use according to flood frequency.
3. All States have enacted flood-plain zoning laws.

Which of the statements given above is/are correct?

Correct Answer: B [1 and 2 only]

Explanation:

Statements 1 and 2 are correct; statement 3 is wrong because only a few States, such as Manipur, Rajasthan and Uttarakhand, have zoning laws.

11.  

Assertion (A): Indian cities flood even after a single spell of heavy rain.

Reason (R): Lakes and natural drains have been encroached upon and surfaces made impervious.

Correct Answer: A [Both A and R are true, and R is the correct explanation of A]

Explanation:

Encroached lakes and drains and impervious surfaces leave rainwater nowhere to go, so R correctly explains why cities flood quickly.

12.  

Which of the following best describes the Flood Management and Border Areas Programme (FMBAP)?

Correct Answer: B [Central assistance to States for flood-management works and for works on border rivers]

Explanation:

FMBAP gives central help to States for flood works and for works on border rivers, formed by merging earlier schemes.

13.  

The Mumbai floods with very heavy rain at Santacruz occurred on:

Correct Answer: D [26 July 2005]

Explanation:

On 26 July 2005 Santacruz recorded about 944 mm of rain in 24 hours, flooding much of Mumbai.

14.  

The September 2014 floods in Srinagar were caused mainly by the:

Correct Answer: D [Jhelum]

Explanation:

The Jhelum flows through Srinagar; in September 2014 it overflowed its banks and flooded much of the city.

15.  

"Room for the river" as a flood strategy means:

Correct Answer: C [giving the river space to spread by moving embankments and restoring flood plains]

Explanation:

Room for the river, the Dutch approach, gives rivers space by setting back embankments and restoring flood plains instead of only raising banks.

16.  

Arrange the following in chronological order:

1. Kerala floods
2. Mumbai floods
3. Rashtriya Barh Ayog report
4. Kosi embankment breach

Select the correct answer using the code given below:

Correct Answer: C [3-2-4-1]

Explanation:

1980, 2005, 2008, 2018.

17.  

Inflow forecasts issued by the CWC are mainly meant for:

Correct Answer: D [operation of reservoirs]

Explanation:

Inflow forecasts tell dam operators how much water will reach a reservoir, so releases can be planned to avoid flooding downstream.

18.  

In 2018, many dams in Kerala had to release water at the same time because of:

Correct Answer: B [very heavy August rainfall]

Explanation:

Extremely heavy August 2018 monsoon rain filled Kerala's reservoirs, forcing many dams to release water at the same time.

19.  

The Rashtriya Barh Ayog (National Flood Commission) was set up in:

Correct Answer: C [1976]

Explanation:

The Rashtriya Barh Ayog was set up in 1976 and submitted its report in 1980.

20.  

IFLOWS, cited in this chapter as an example of a city-level system, is:

Correct Answer: A [Mumbai's integrated flood early-warning system]

Explanation:

IFLOWS-Mumbai gives city-level flood warnings; Chennai has a similar system.

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