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Floods

PYQs

5

Articles

1

Momentum

15

Phase IFoundation

Background

Overview

UPSC frequently examines natural disasters, their causes, impacts, and management strategies, making floods a crucial topic for disaster preparedness and environmental studies.

Floods are natural hydrological events characterized by an overflow of water that submerges land, often resulting from heavy rainfall, rapid snowmelt, or dam failures. They are a significant recurring natural disaster, particularly in regions with monsoon climates and mountainous terrain.

Phase IIStatic core

Facts & tables

Key facts

Primary Causes

Intense monsoon rainfall, cloudbursts, glacial lake outburst floods (GLOFs), dam breaches.

Major Impacts

Loss of life, property damage, agricultural destruction, displacement, infrastructure disruption.

Vulnerable Regions

Riverine plains, coastal areas, low-lying deltas, and mountainous regions prone to flash floods.

Reference table

Static syllabus anchors

TypeReference
Conceptual areaEnvironment & Ecology

Reference table

Institutions & roles

BodyRole
National Disaster Management Authority (NDMA)Formulates policies and guidelines for disaster management
Phase IIIExam lens

Prelims angle

Overview

Prelims angle: Multi-statement analysis

Prelims angle: Factual recall

Quick revision

  • Key causes: Heavy rainfall, GLOFs, cloudbursts.
  • Impacts: Economic loss, displacement, infrastructure damage.
  • Mitigation: Embankments, early warning systems, watershed management.
  • Vulnerable areas: Himalayan region, Gangetic plains.
  • Management: NDMA, SDMA, community-based approaches.

High-confidence PYQs

2026Multi-statement analysis, Factual recall

Which of the following statements with reference to Lake Turkana is/are correct ? 1. It is the largest desert lake in the world. 2. The lake is situated in ...

GeographyOpen question
2025Factual recall, Statement-based questions

Consider the following water bodies: I. Lake Tanganyika II. Lake Tonlé Sap III. Patos Lagoon Through how many of them does the equator pass?

GeographyOpen question
2023Multi-statement analysis, Factual recall

Consider the following statements: 1. Jhelum River passes through Wular Lake. 2. Krishna River directly feeds Kolleru Lake 3. Meandering of Gandak River form...

GeographyOpen question
2022Factual recall, Terminology-based question

Which one of the following lakes of West Africa has become dry and turned into a desert?

Environment & EcologyOpen question
2017Statement-based questions, Factual recall

Consider the following statements: 1. In India, the Himalayas are spread over five States only. 2. The Western Ghats are spread over five States only. 3....

GeographyOpen question

Topic timeline

Environment & Ecology
Prelims 2017· Statement-based questions, Factual recall

Consider the following statements: 1. In India, the Himalayas are spread over five States only. 2. The Western Ghats are spread over five States only. 3....

Open question
Prelims 2022· Factual recall, Terminology-based question

Which one of the following lakes of West Africa has become dry and turned into a desert?

Open question
Prelims 2023· Multi-statement analysis, Factual recall

Consider the following statements: 1. Jhelum River passes through Wular Lake. 2. Krishna River directly feeds Kolleru Lake 3. Meandering of Gandak River form...

Open question
Prelims 2025· Factual recall, Statement-based questions

Consider the following water bodies: I. Lake Tanganyika II. Lake Tonlé Sap III. Patos Lagoon Through how many of them does the equator pass?

Open question
Prelims 2026· Multi-statement analysis, Factual recall

Which of the following statements with reference to Lake Turkana is/are correct ? 1. It is the largest desert lake in the world. 2. The lake is situated in ...

Open question

How the Nepal floods echo past disasters — and sound a warning for the future

28 Aug 2026 · Floods are recurrent natural disasters, often exacerbated by climate change and human activities, leading to significant socio-economic and environmental damage, necessitating robust disaster management and mitigation efforts.

Read article

Related topics

Current topic

Floods

Often confused with

Climate Change Impacts on Extreme Weather

Open notes

Practice writing on this topic

UPSC has asked 5 linked questions on Floods in Mains. Write an answer to one — and get it evaluated.

See Mains PYQsEvaluate an answer

UPSC Prelims PYQs on Floods

Practice official previous year questions asked by UPSC related to this concept.

Consider the following statements: 1. Jhelum River passes through Wular Lake. 2. Krishna River directly feeds Kolleru Lake 3. Meandering of Gandak River form...

2023·Geography
Solve

Consider the following water bodies: I. Lake Tanganyika II. Lake Tonlé Sap III. Patos Lagoon Through how many of them does the equator pass?

2025·Geography
Solve

Consider the following statements: 1. In India, the Himalayas are spread over five States only. 2. The Western Ghats are spread over five States only. 3....

2017·Geography
Solve

Which of the following statements with reference to Lake Turkana is/are correct ? 1. It is the largest desert lake in the world. 2. The lake is situated in ...

2026·Geography
Solve

Which one of the following lakes of West Africa has become dry and turned into a desert?

2022·Environment & Ecology
Solve

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