Unit 2
🎯 Unit 2 Overview
Unit 2 explains different approaches to Disaster Risk Reduction. It covers disaster cycle,
culture of safety, prevention, mitigation, preparedness, community based disaster risk reduction,
structural and non-structural measures, roles of community and institutions, SDMA and early warning systems.
Exam Tip: Disaster Cycle, Prevention, Mitigation, Preparedness, Community Based DRR, Structural and Non-Structural Measures and Early Warning System are very important for RGPV exams.
📘 Disaster Risk Reduction
Disaster Risk Reduction means systematic efforts to reduce disaster risks by analyzing hazards,
reducing vulnerability and increasing preparedness. Its main goal is to reduce loss of life,
property, environment and livelihood.
Simple meaning: Disaster hone se pehle risk ko kam karna hi Disaster Risk Reduction hai.
🔄 Disaster Cycle
Disaster cycle shows the continuous process of disaster management. It includes activities before,
during and after a disaster.
| Phase |
Description |
| Mitigation |
Actions taken to reduce disaster impact and future losses. |
| Preparedness |
Planning, training and readiness before disaster occurs. |
| Response |
Immediate actions taken during and just after disaster. |
| Recovery |
Restoring normal life, rebuilding and rehabilitation. |
Disaster Cycle = Mitigation → Preparedness → Response → Recovery.
🛡️ Culture of Safety
Culture of safety means developing awareness, habits and systems that reduce disaster risks.
It encourages people and institutions to follow safe practices regularly.
Important Elements
- Public awareness
- Safety education
- Disaster drills
- Preparedness planning
- Safe construction practices
- Community participation
- Emergency response training
🚫 Prevention
Prevention means actions taken to completely avoid the occurrence of a disaster or hazard impact.
Some disasters cannot be fully prevented, but their risks can be reduced.
Examples
- Ban construction in flood-prone zones
- Proper industrial safety rules
- Strict building codes
- Fire safety systems
- Land-use planning
📉 Mitigation
Mitigation means measures taken to reduce the harmful effects of disasters.
It does not always stop disasters but reduces damage and losses.
Examples
- Earthquake-resistant buildings
- Flood embankments
- Cyclone shelters
- Retaining walls for landslides
- Afforestation
- Drainage improvement
⚖️ Prevention vs Mitigation
| Prevention |
Mitigation |
| Aims to avoid disaster impact completely. |
Aims to reduce disaster impact. |
| Done before disaster. |
Done before disaster. |
| Example: no construction in high-risk zone. |
Example: earthquake-resistant construction. |
| May not be possible for all disasters. |
Possible for most disasters. |
🎒 Preparedness
Preparedness means planning and readiness activities before a disaster so that response becomes
quick and effective.
Preparedness Activities
- Emergency planning
- Mock drills
- Early warning systems
- Emergency kits
- Training of volunteers
- Evacuation plans
- Communication systems
- Medical preparedness
👥 Community Based Disaster Risk Reduction
Community Based Disaster Risk Reduction means involving local people in identifying risks,
planning, preparedness and response activities. Local people know their area better, so their
participation makes disaster management more effective.
Importance of CBDRR
- Uses local knowledge
- Improves awareness
- Builds local capacity
- Faster response during disaster
- Supports vulnerable groups
- Reduces dependency on external help
🏗️ Structural Measures
Structural measures are physical constructions or engineering works used to reduce disaster risk.
Flood Control
Dams, embankments, drainage channels and flood walls.
Earthquake Safety
Earthquake-resistant buildings and retrofitting.
Cyclone Protection
Cyclone shelters and strong coastal infrastructure.
Landslide Protection
Retaining walls, slope stabilization and drainage control.
📋 Non-Structural Measures
Non-structural measures do not involve physical construction. They include policies,
awareness, training and planning.
Examples
- Disaster management policies
- Building codes and regulations
- Land-use planning
- Public awareness campaigns
- Training and capacity building
- Insurance schemes
- Early warning communication
- School safety programmes
⚖️ Structural vs Non-Structural Measures
| Structural Measures |
Non-Structural Measures |
| Physical construction-based measures. |
Policy, planning and awareness-based measures. |
| Require engineering work. |
Require administration and awareness. |
| Examples: dams, shelters, embankments. |
Examples: laws, training, warning systems. |
| Usually costly. |
Usually less costly. |
🏘️ Role of Community in DRR
- Identify local hazards and vulnerable areas.
- Participate in disaster preparedness planning.
- Help in evacuation and rescue.
- Support elderly, children and disabled people.
- Spread awareness about safety measures.
- Participate in mock drills and training.
- Support relief and recovery activities.
🏛️ Role of Panchayati Raj Institutions
Panchayati Raj Institutions play an important role in rural disaster management because they are
close to local communities.
Functions
- Prepare village disaster management plans
- Identify vulnerable groups
- Coordinate relief distribution
- Support awareness campaigns
- Maintain local resources
- Coordinate with district administration
🏙️ Role of Urban Local Bodies
Urban Local Bodies manage disaster risk in cities and towns.
Functions
- Urban flood management
- Fire safety planning
- Building safety regulation
- Drainage maintenance
- Waste management during disaster
- Emergency response coordination
- Public awareness in urban areas
🏢 Role of State and Central Government
| Level |
Role |
| State Government |
State disaster planning, coordination, relief, rescue and rehabilitation. |
| Central Government |
National policy, financial support, armed forces support, national response coordination. |
| District Administration |
Local disaster response, evacuation, relief camps and damage assessment. |
👨🚒 Role of Other Stakeholders
- NGOs: Relief, awareness, training and rehabilitation support.
- Schools and Colleges: Disaster awareness and safety drills.
- Media: Spreads warnings and safety information.
- Police: Law and order, evacuation and rescue support.
- Health Department: Medical aid and disease control.
- Volunteers: Local response and community support.
🏛️ State Disaster Management Authority
State Disaster Management Authority is responsible for disaster management planning and coordination
at the state level.
Functions of SDMA
- Prepare state disaster management policy
- Approve state disaster management plan
- Coordinate with district authorities
- Promote disaster preparedness
- Monitor mitigation measures
- Guide departments during disasters
- Support capacity building and awareness
📢 Early Warning System
Early Warning System provides timely alerts before disaster so that people and authorities can take
preventive and preparedness actions.
Components
- Risk knowledge
- Monitoring and forecasting
- Warning communication
- Response capability
Examples
- Cyclone warning
- Flood warning
- Tsunami warning
- Heat wave warning
- Heavy rainfall alert
📩 Advisories in Disaster Management
Advisories are official instructions or guidelines issued before, during or after disasters.
They help people take safe actions.
Examples
- Evacuation advisory
- Weather advisory
- Health advisory
- Travel advisory
- Safety advisory during flood, cyclone or earthquake
⭐ Important Questions
- Explain Disaster Risk Reduction.
- Explain disaster cycle with diagram.
- Differentiate between prevention and mitigation.
- Explain preparedness and its importance.
- Explain Community Based Disaster Risk Reduction.
- Differentiate between structural and non-structural measures.
- Explain role of community in disaster risk reduction.
- Explain role of Panchayati Raj Institutions and Urban Local Bodies.
- Explain State Disaster Management Authority.
- Explain Early Warning System and its components.
📌 PYQ Analysis
| Topic |
Exam Importance |
| Disaster Cycle |
Very High |
| Prevention, Mitigation and Preparedness |
Very High |
| Community Based DRR |
High |
| Structural and Non-Structural Measures |
Very High |
| Role of Community and Institutions |
High |
| SDMA |
Medium |
| Early Warning System |
High |
❓ FAQs
What is Disaster Risk Reduction?
Disaster Risk Reduction is the process of reducing disaster risks through prevention,
mitigation, preparedness and community participation.
What are the phases of disaster cycle?
The main phases are mitigation, preparedness, response and recovery.
What is the role of SDMA?
SDMA prepares state disaster management policies and plans and coordinates disaster management activities at state level.
What is an Early Warning System?
It is a system that provides timely alerts before disasters so people can take safety actions.
🔥 Last Minute Revision
- DRR means reducing disaster risks before disaster occurs.
- Disaster Cycle = Mitigation, Preparedness, Response, Recovery.
- Prevention avoids disaster impact.
- Mitigation reduces disaster damage.
- Preparedness improves readiness before disaster.
- CBDRR involves local community participation.
- Structural measures include dams, shelters and embankments.
- Non-structural measures include policies, training and awareness.
- SDMA works at state level.
- Early Warning System gives timely alerts.