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GS Paper: GS3-19.Disaster and Disaster Management.

  • Protecting floodplains is the need of the hour

    What’s the news?

    • Indian cities are projected to contribute significantly to the country’s GDP by 2030. Flooding in these urban centers has a substantial economic impact, underscoring the importance of effective flood management.

    Central idea

    • The world is grappling with a dual challenge of water scarcity and excess as climate change intensifies. The frequency and intensity of floods are on the rise, with devastating consequences. The urgency of addressing this issue cannot be overstated.

    Recent catastrophic floods

    • Last year, Pakistan witnessed catastrophic floods that claimed lives and affected millions.
    • India has faced its share of calamities, such as the 2013 Uttarakhand floods, the 2014 Kashmir Valley deluge, the 2015 Chennai floods, and the 2017 Gujarat floods.
    • This year, Himachal Pradesh experienced rain-induced floods and landslides.

    Why is India prone to flooding?

    • Geographical Vulnerability: The article mentions that over 40 million hectares, which is nearly 12% of India’s total land area, are prone to floods, as indicated by the Geological Survey of India. This vulnerability is due to India’s diverse geography, including extensive river systems, coastal regions, and mountainous areas.
    • Climate Change: Floods are increasing in frequency and intensity, and this trend is expected to continue due to climate change. Extreme precipitation events are becoming more common, contributing to flooding.
    • Urbanization Challenges: Rapid and haphazard urbanization is one of the factors that makes Indian cities vulnerable to floods. The expansion of cities, often without proper consideration of natural topography, increases the risk of flooding in urban areas.
    • Inadequate Legal Framework: India primarily relies on the Disaster Management Act of 2005 for flood management, but this law is not specifically focused on flood risk management and assumes that disasters cannot be predicted, which may not be entirely accurate for floods.
    • Large-Scale Encroachments: India faces challenges due to extensive encroachments on floodplains, including illegal construction and mining activities. These encroachments reduce the natural capacity of rivers and floodplains to handle excess water during heavy rainfall.
    • Chennai Floods Example: The 2015 Chennai floods were attributed to these encroachments, and the Comptroller and Auditor General of India labeled it a man-made disaster.
    • Weak Enforcement of Environmental Laws: The environmental protection laws in India are often not effectively implemented. Central policies related to floodplain protection lack binding power over states, allowing encroachments to persist.

    Flood Plains and their Significance

    • Flood plains adjacent to rivers serve as natural defences against inland flooding. Maintained without concrete encroachments, they absorb excess water, safeguarding other regions.
    • Properly managed flood plains also aid in recharging groundwater levels and maintaining the water table.

    Key issues related to occupying floodplains and the challenges it poses in India

    • Reduced River Capacity: Illegal construction in floodplains diminishes the natural capacity of rivers to contain high water levels within their banks. This becomes especially problematic during periods of heavy rainfall when water from upper catchment areas flows downstream.
    • Neglect of Eco-Sensitive Areas: In Uttarakhand, there has been a disregard for eco-sensitive floodplains with the construction of guest houses and hotels along riverfronts to promote tourism and economic growth. This neglect has contributed to increased flood risks.
    • Regulatory Efforts: Following the massive floods in 2013, the National Green Tribunal issued a directive in 2015, essentially barring construction within 200 meters of the Ganga’s banks. However, attempts to bypass this directive have been made, raising questions about the proper implementation of environmental impact assessments.
    • Ineffective Legislation: The Uttaranchal River Valley (Development and Management) Act of 2005 was established to regulate mining and construction in river valleys. However, reports suggest rampant mining and construction activities with little consideration for environmental protection.
    • Weak Implementation of Environmental Laws: Despite having environmental protection laws in place, India faces issues with their implementation. Central policy measures to protect floodplains are often non-binding on states, and there is a lack of effective enforcement.

    Strategies to preserve ecosystems

    • International Examples:
    • Examples from around the world include Germany’s Federal Water Act, which underwent a significant change in 1996 following a massive flood.
    • The law now prioritizes the protection of the original retention capacity of water bodies during reconstruction.
    • This change reflects the value of preserving floodplains and enhancing water retention as effective measures against flooding.
    • Cross-Sectoral Approach:
    • Climate change adaptation is described as a cross-sectoral issue that involves various areas of legislation, including land use, water body preservation, coastal regulations, and environmental impact assessment.
    • A comprehensive and integrated approach is necessary to address the complexities of climate change adaptation effectively.
    • Coherent Legal Framework:
    • To tackle climate change and its associated risks, it is crucial to integrate multiple laws into a coherent framework.
    • Passing climate-related legislation alone may not be sufficient if other laws related to land use and environmental protection are not aligned with climate goals.
    • Political Will:
    • Strong political will is identified as a critical factor in achieving effective climate change adaptation strategies.
    • Populist leaders may be hesitant to implement green policies, so there is a need for a shift in political priorities to prioritize environmental protection and climate resilience.

    Conclusion

    • India’s approach to flood management must evolve to embrace integrated flood risk management, learning from global examples. By prioritizing ecosystem preservation and adopting a holistic approach to climate change adaptation, India can better safeguard lives, livelihoods, and infrastructure from the growing threat of floods.

    Also read:

    Why Zoning of Flood Plains is important?

     

  • Assistance to States during Natural Disasters: How It Works

    Central Idea

    • In the wake of natural disasters, states often request assistance from the central government.
    • Himachal Pradesh CM recently requested for a special disaster relief package and urged the designation of the calamity as a ‘national disaster.’

    Natural Disaster Mitigation in States

    • Legal Framework: The 2005 Disaster Management Act provides the legal framework for addressing disasters, whether natural or man-made.
    • Defining disaster: It defines a “disaster” as an event causing substantial loss of life, human suffering, property damage, or environmental degradation beyond the community’s coping capacity.
    • National Disaster Management Authority (NDMA): The Act established the NDMA, headed by the Prime Minister, and State Disaster Management Authorities (SDMAs) led by Chief Ministers. These bodies, along with district-level authorities, form an integrated disaster management setup in India.
    • National Disaster Response Force (NDRF): The Act led to the creation of the NDRF, comprising several battalions or teams responsible for on-ground relief and rescue operations in various states.

    Understanding the National Disaster Relief Fund (NDRF)

    • Mention in the Act: The NDRF is referenced in the 2005 Disaster Management Act and plays a crucial role in providing disaster relief.
    • State Disaster Relief Funds (SDRFs): States have their own SDRFs, which are the primary funds available for responding to notified disasters. The Central Government contributes 75% to SDRFs in general states and 90% in northeastern and Himalayan states.
    • Utilization of SDRFs: SDRFs are allocated for immediate relief efforts following notified calamities, including cyclones, droughts, earthquakes, fires, floods, tsunamis, and more.
    • Central Assistance: In the event of a severe calamity where state SDRF funds are insufficient, additional central assistance can be provided by the National Disaster Response Fund (NDRF).

    Who determines a Severe Calamity?

    • Procedure: States follow a specific procedure to classify a calamity as “severe.” This involves submitting a memorandum detailing sector-wise damage and fund requirements. An inter-ministerial central team assesses the damage on-site.
    • Committee Approval: Specific committees review these assessments and submit reports. A High-Level Committee must approve the immediate relief amount to be released from the NDRF.
    • Criteria: The classification of a calamity as “severe” considers factors such as intensity, magnitude, assistance needs, and more.

    Additional Funds for Disaster Mitigation

    • Funds Allocation: Funds for NDRF and SDRFs, allocated for preparedness, mitigation, and reconstruction, are part of budgetary allocations.
    • Financing mechanism: The 15th Finance Commission introduced a new methodology for state-wise allocations, considering factors like past expenditure, risk exposure, hazard, and vulnerability.
    • Utilization: NDRF and SDRF funds are released in two equal instalments, typically with requirements like Utilization Certificates. However, in urgent situations, these requirements can be waived.
    • State Disaster Mitigation Fund (SDMF): This fund supports activities such as forest restoration and public awareness. It received an allocation of Rs 32,030 crore from the 15th Finance Commission.
    • National Disaster Mitigation Fund (NDMF): The NDMF, amounting to Rs 13,693 crore, is dedicated to national disaster mitigation efforts.

  • Why Zoning of Flood Plains is important?

    flood plain

    Central Idea

    • Punjab has been grappling with severe floods for over a month, predominantly affecting villages along rivers like Sutlej, Beas, Ravi, and Ghaggar.
    • These areas, known for their fertile flood plains, have been hit the hardest due to floods exacerbated by encroachments and construction.

    Flood Plains and their Significance

    • Flood plains adjacent to rivers serve as natural defences against inland flooding. Maintained without concrete encroachments, they absorb excess water, safeguarding other regions.
    • Properly managed flood plains also aid in recharging groundwater levels and maintaining the water table.

    What is Zoning of Flood Plains?

    • Zoning of flood plains refers to the practice of categorizing and regulating different areas within flood-prone regions based on their vulnerability to flooding and the intensity of flood events.
    • This aims to manage land use and construction activities in these areas to minimize the risks associated with flooding, protect communities and infrastructure, and maintain the natural functions of flood plains.
    • It involves designating specific zones within flood-prone regions and establishing regulations and guidelines for development, construction, and land use in each zone.

    Current Scenario: No Zoning in Punjab

    • National Green Tribunal (NGT): NGT guidelines state that construction should not occur within 500 meters of a river’s central lining.
    • Punjab’s Lag: Despite NGT’s directives and the need for floodplain zoning, Punjab has yet to initiate the process. Encroachments persist, putting riverside villages at perpetual risk.

    Impact of Inaction: People and Ecosystems Affected

    • Risk to People and Property: Unregulated construction leads to increased flood risks further inland, causing greater harm during floods.
    • Environmental Impact: Concretization of flood plains delays water drainage and affects soil fertility and quality.

    Flood Prone Districts and National Issue

    • Districts at Risk: Many districts including Ropar, Ludhiana, Ferozepur, Patiala, and more fall within flood plains, magnifying the need for preparedness.
    • Nationwide Challenge: While only four states have adopted flood plain zoning in principle, implementation has been insufficient. Even those that adopted zoning have not effectively delineated and demarcated flood plains.

    Activists’ Advocacy

    • Activists’ Concerns: Environmental activists and NGOs in Punjab have been advocating for flood plain zoning to mitigate risks.
    • Urgent Implementation: Immediate initiation and completion of flood plain zoning are crucial to safeguard lives, property, and ecosystems from devastating floods.

    Conclusion

    • The recent floods in Punjab underline the urgency of flood plain zoning to avert catastrophe.
    • By adopting effective zoning measures, the state can shield its citizens and environment from the damaging impacts of unchecked construction and flooding.
    • It is imperative that Punjab takes swift action to implement flood plain zoning and thereby protect its vulnerable regions from the perpetual threat of floods.

  • In news: International Atomic Energy Agency (IAEA)

    Central Idea

    • Japan has begun discharging treated radioactive wastewater from the disabled Fukushima Daiichi Nuclear Power Station into the Pacific Ocean in a plan endorsed by the International Atomic Energy Agency (IAEA).

    International Atomic Energy Agency (IAEA)

    • IAEA is an international organization that plays a pivotal role in promoting the peaceful use of nuclear energy while preventing the proliferation of nuclear weapons.
    • It was established in 1957 as an autonomous agency under the UN is headquartered in Vienna, Austria.
    • It plays a crucial role in safeguarding the principles outlined in the Nuclear Non-Proliferation Treaty (NPT) of 1970.
    • Despite its independent treaty, the IAEA remains accountable to both the UN General Assembly and the United Nations Security Council (UNSC).

    What does it do?

    • Promotion of Peaceful Nuclear Energy: Established amidst the Cold War’s geopolitical tension, the IAEA’s core mission centers on promoting the constructive application of nuclear energy.
    • Prevention of Military Use: The agency’s fundamental role is to prevent the diversion of nuclear programs for military intentions, ensuring compliance with international agreements.

    IAEA’s Tri-fold Missions

    • Peaceful Utilization: Fostering member states’ constructive adoption of nuclear energy for peaceful purposes constitutes a pivotal aspect of IAEA’s mission.
    • Safeguarding Measures: A cornerstone role of the IAEA involves implementing measures to verify the non-military use of nuclear energy, particularly through assessing declared nuclear activities and materials.
    • Nuclear Safety: The IAEA takes an active stance in advocating stringent standards of nuclear safety to prevent accidents and ensure public and environmental protection.

    Significant feature: IAEA’s Safeguards

    • Purpose of Safeguards: IAEA’s safeguards are mechanisms designed to affirm that a nation adheres to its international commitment against exploiting nuclear programs for weaponry purposes.
    • Verification Approach: Safeguards are founded on the meticulous examination of a state’s reported nuclear materials and activities, evaluating their accuracy and completeness.
    • Varied Verification Measures: The agency employs a range of verification tools, including on-site inspections, visits, and ongoing monitoring, ensuring rigorous oversight.

    Dual Dimensions of Safeguards

    • Declared Nuclear Material Verification: Through the inspection of reported nuclear materials and activities, IAEA ensures that a state remains transparent in its nuclear endeavors.
    • Non-Diversion Assurance: A significant facet is the assurance of the absence of undeclared nuclear materials or activities, thereby averting any unauthorized deviation from peaceful usage.

  • Himachal Floods: A man-made disaster?

    himachal

    Central Idea

    • Himachal Pradesh has experienced devastating flash floods during the recent monsoon season, resulting in a significant loss of lives and assets.
    • This article explores the factors contributing to the floods, including climate change and anthropogenic actions, and raises questions about the current development model’s sustainability.

    Reasons for amplified Flood Impacts

    [A] Climate Change and Floods

    • IPCC’s Warning: The IPCC VI report predicts that the Himalayas and coastal regions of India will be the hardest hit by climate change. Increased precipitation in shorter periods is evident in the Himalayas, leading to heavy rains and floods.
    • Abnormal Rainfall: Normal rainfall is expected to be between 720mm and 750mm, but instances of exceeding 888mm in 2010 and 926.9mm in 2018 have been observed. The current precipitation has been a result of the combined effect of the southwest monsoon and western disturbances.

    [B] Impact of Development Model

    • Dr. Parmar Model: Himachal Pradesh’s development model, initiated in 1971, transformed the state into a model of development for mountain regions. It focused on land reforms, social welfare investments, and human resource development.
    • Shift in Development: Liberalization brought demands for fiscal reforms, forcing the state to generate its own resources. Exploitation of natural resources such as forests, water, tourism, and cement production became the focus of development efforts.
    • Hydropower Projects: Dominant focus on hydropower projects led to uncontrolled construction, transforming mountain rivers into streams, and causing ecological damage.
    • Tourism Expansion: Road expansion for tourism promotion resulted in bypassing geological studies, leading to landslides and destruction during rainfall.
    • Cement Plants: Establishment of massive cement plants altered the landscape, reducing the land’s water absorption capacity and contributing to flash floods.
    • Changing Crop Patterns: Shift from traditional cereal farming to cash crops increased the demand for hastily constructed roads without proper drainage, leading to rapid swelling of rivers during rainfall.

    Way Forward

    • Commission of Inquiry: Instituting a Commission of Inquiry involving major stakeholders can address policy framework failures and project aspects.
    • Empowering Local Communities: A new architecture is needed to empower local communities over their assets. Insuring assets and involving local communities as custodians can expedite rebuilding efforts.
    • Sustainable Infrastructure: With climate change as a reality, infrastructure planning should adapt to avert disasters and mitigate the impacts of heavy rainfall.

    Conclusion

    • The flash floods in Himachal Pradesh demonstrate the consequences of both climate change and human-induced development.
    • It calls for a comprehensive approach that considers sustainable development practices, empowers local communities, and prioritizes environmental conservation to protect lives and assets in the region.

  • Lightning not a Natural Disaster: Centre

    light

    Central Idea

    • A senior government official stated that lightning deaths can be prevented through education and awareness, and thus, the government is against declaring it a natural disaster.

    Why discuss this?

    • State Demands: States like Bihar and West Bengal have requested that lightning-related deaths be considered natural disaster, making victims eligible for compensation from the State Disaster Response Fund (SDRF).
    • Increased fatalities: According to the National Crime Records Bureau, lightning caused 2,880 deaths in 2021, accounting for 40% of all accidental deaths from “forces of nature.”

    What is Lightning?

    Lightning is a rapid and powerful discharge of electricity in the atmosphere, often directed towards the Earth.

    • Genesis: Lightning discharges occur in giant, moisture-bearing clouds that are several kilometers tall.
    • Ice Crystal Formation: Water vapor in the clouds condenses into small ice crystals as temperatures drop below 0°C.
    • Electron Release and Collision: Collisions between ice crystals generate a release of electrons, leading to a chain reaction and the formation of a positive and negative charge within the cloud.
    • Types: Lightning can occur within clouds (inter-cloud and intra-cloud) or between the cloud and the ground (cloud-to-ground).

    Intensity of Lightning Strikes

    • Voltage and Amperage: A typical lightning flash can reach around 300 million volts and 30,000 amps, significantly higher than household current.
    • Comparisons: Household current is 120 volts and 15 amps, highlighting the immense power of lightning.

    Mitigating Lightning Incidents

    • Early Warning System: India has established an early warning system for lightning, saving numerous lives.
    • Focus on Rural Areas: Over 96% of lightning deaths occur in rural areas, necessitating mitigation and awareness programs targeted at these communities.
    • Deployment of Protection Devices: Low-cost lightning protection devices need to be deployed more widely, especially in rural areas.
    • Lightning Action Plans: States are encouraged to develop and implement lightning action plans, similar to heat action plans, to mitigate lightning-related risks.
    • International Centre for Excellence: Efforts are underway to establish an international center for excellence in lightning research to enhance detection and early warning systems.

     

  • Monsoon havoc in India: How floods can be a valuable resource

    floods

    What is the news?

    • The monsoon season in India this year brought about unprecedented changes, with Mumbai and New Delhi experiencing the onset of rains on the same day after a gap of 61 years.

    ” Floods are acts of God but flood losses are largely acts of man”

    Central idea

    • The events of heavy rainfall and subsequent flooding are occurring in various parts of India leading to significant loss of lives, damage to land, and financial losses. This highlighting the inadequacy of India’s hydro-infrastructure for effective flood management and calls for a shift in mindset towards conserving flood flows as a valuable resource

    Floods in India: A recurring challenge

    • Frequency: India experiences floods on a recurring basis, with at least one major flood event occurring each year. This indicates that floods are not isolated incidents but rather a consistent challenge.
    • Loss of Lives: Floods in India lead to the loss of lives, with an average of 1,600 lives being lost annually, according to the National Disaster Management Authority. The loss of human lives highlights the severity and recurring nature of the flood challenge.
    • Damage to Land: Floods affect a significant area of land in India, impacting approximately 75 lakh hectares. This demonstrates the recurrent impact of floods on agricultural land, leading to crop damage and agricultural losses.
    • Financial Losses: Floods in India cause substantial financial losses, with damages estimated at Rs 1,805 crore. These losses encompass damages to crops, houses, and public utilities, further highlighting the recurring challenge and the need for effective management strategies.

    Flood management measures

    Structural Measures:

    • Storage Reservoirs: These reservoirs are constructed to store excess water during high-flow periods and release it gradually, reducing flood peaks. They also serve as a water source for irrigation, electricity generation, and other purposes.
    • Embankments: These structures, also known as levees, act as barriers to prevent floodwaters from encroaching on vulnerable areas such as agricultural lands, cities, and industries.
    • Diversions: This measure involves redirecting excess water away from heavily populated or susceptible areas to less vulnerable regions, helping to minimize the impact of flooding.

    Non-Structural Measures:

    • Flood Forecasting and Warning Systems: These systems use data analysis, weather monitoring, and hydrological modeling to provide advance warnings about potential flood events. They enable timely evacuation of people and movable assets, reducing the risk to life and property.
    • Flood Plain Zoning: This measure involves regulating the use of floodplains by restricting human activities and developments in flood-prone areas. By delineating zones based on flood risk, it helps minimize vulnerability and losses associated with floods.

    How floods can be a valuable resource?

    • Water Storage: Floods can serve as a valuable resource for water storage. By conserving and capturing floodwaters, the excess water can be stored in reservoirs or other storage facilities. This stored water can then be used for various purposes during dry periods, including irrigation, drinking water supply, and industrial needs.
    • Drought Mitigation: Conserving flood flows can help mitigate the impact of droughts. By storing excess floodwaters, the saved water can be utilized to partially address water scarcity during drought periods, providing relief to agriculture, communities, and ecosystems that rely on water availability.
    • Groundwater Recharge: Floods contribute to the replenishment of groundwater aquifers. The infiltration of floodwaters into the soil helps recharge underground water reserves, ensuring a sustained supply of groundwater for various uses even after the flood event subsides.
    • Ecological Benefits: Floods support ecosystems and promote biodiversity. The article mentions that floods bring essential nutrients, sediments, and organic matter to wetlands and riverine habitats, which nourish the ecosystems and support diverse flora and fauna.
    • Hydropower Generation: Controlled release of floodwaters can be harnessed for hydropower generation. By utilizing the energy of flowing water, floods can be a valuable resource for producing renewable energy through hydropower projects

    Why India needs to upgrade its hydro-infrastructure?

    • Inadequate Infrastructure: India’s hydro-infrastructure is currently inadequate for effective flood management. The existing infrastructure, such as storage reservoirs, embankments, and diversions, is not sufficient to address the challenges posed by floods.
    • Insufficient Storage Space: The storage space created in major river basins, such as the Ganga and the Brahmaputra, is inadequate for the available flows. This indicates a need to enhance storage capacity to effectively manage floodwaters and maximize their utilization.
    • Managing Variabilities: With changing rainfall patterns and intensities due to climate change, the variability of water flows in rivers will increase. Upgrading the hydro-infrastructure is seen as crucial to effectively manage these increasing variabilities and address the resulting challenges of floods and droughts.
    • Conservation of Flood Flows: The potential value of conserving flood flows for drought mitigation. Upgrading the hydro-infrastructure would enable the conservation of unutilized flood flows, which can then be stored and utilized during dry periods to partially mitigate droughts.
    • Water Security and Resilience: Upgrading the hydro-infrastructure is important for ensuring water security and resilience. It allows for improved water management, including storage, distribution, and utilization, which can reduce dependence on erratic monsoon patterns and enhance the country’s ability to cope with water-related challenges.
    • Environmental Considerations: An upgraded hydro-infrastructure should incorporate environmental considerations. This includes preserving ecological flows, minimizing disruptions to ecosystems, and promoting sustainable water management practices.

    Way forward: Towards comprehensive flood management

    • Shift in Focus: Shifting attention and efforts from flood control to flood management. This involves adopting a comprehensive approach that encompasses structural and non-structural measures, as well as integrating environmental considerations.
    • Upgrading Hydro-Infrastructure: Upgrading the existing hydro-infrastructure includes increasing storage capacity, improving embankments, and constructing new reservoirs. Upgrades should address the inadequacies of the current infrastructure and consider the potential for conserving flood flows.
    • Conserving Flood Flows: By safely storing and utilizing excess floodwaters, damages caused by floods can be reduced, and the saved water can be utilized to partially mitigate droughts. This requires the development of storage facilities and infrastructure to capture and store floodwaters during high-flow periods.
    • Integrated Approach: There is need for an integrated approach to flood management. This involves combining structural measures with non-structural measures such as flood forecasting, warning systems, and floodplain zoning. Integration should also consider environmental considerations and the preservation of ecological flows.
    • Learning from International Experiences: Learning from international experiences in flood management. This includes evaluating the performance of flood control measures, studying integrated approaches, and understanding how other countries have balanced flood management objectives with environmental concerns.
    • Community Engagement and Awareness: Raising awareness about flood risks, promoting community preparedness, and involving local communities in early warning systems and evacuation plans.
    • Policy and Governance: There is need for robust policies and governance mechanisms to support comprehensive flood management. This includes incorporating climate change adaptation strategies, promoting multi-stakeholder collaboration, and ensuring environmental safeguards.
    • Investment and Resource Allocation: Allocating adequate resources and funding for flood management initiatives. This involves securing financial support for infrastructure upgrades, research and development, capacity building, and community resilience programs.

    Conclusion

    • It is imperative for India to recognize flood flows as a valuable resource and implement measures that conserve water for subsequent use and water security. By adopting a comprehensive approach, upgrading hydro-infrastructure, and leveraging a mix of structural and non-structural measures, India can effectively mitigate the impacts of floods while ensuring sustainable water management for the future.

    Also read:

    The lesson from a monsoon-battered North India: Time to be prepared

  • The lesson from a monsoon-battered North India: Time to be prepared

    monsoon

    What is the news?

    • Last weekend, parts of North India witnessed heavy rains that triggered flash floods and left a trail of destruction, tragically it resulted in at least 50 reported deaths. Himachal Pradesh was the worst affected. Several places in Haryana, Punjab and Himachal Pradesh reported record rainfall.

    Central idea

    • Last weekend, North India faced a calamity as torrential rains triggered flash floods and wreaked havoc across the region. Understanding the factors that led to this catastrophe is crucial in developing effective strategies to mitigate the impact of such extreme weather events in the future.

    Fundamental characteristics of monsoon rainfall in the region

    • Concentrated Timeframe: Monsoon rainfall in the region is not evenly distributed throughout the year. Instead, it occurs within a specific timeframe. All the seasonal rainfall (about 80-100 cm) falls within 130-150 hours, which is a relatively short period.
    • Heavy Rain Contribution: The heavy rains play a significant role in contributing to the overall seasonal precipitation. Half of the seasonal rainfall (40-50 cm) occurs in only 30-40 hours.
    • Runoff: When heavy rains occur, most of the rainwater drains away as runoff, particularly when the soil is already wet. This indicates that a substantial amount of rainfall does not get absorbed into the ground but flows off as surface runoff.

    Factors attributed to the Heavy Downpour in north India

    • Active Monsoon and Moisture Influx: An active monsoon season with strong winds in the lower air layers brought in moisture from the Bay of Bengal and the Arabian Sea. These moisture-laden winds contributed to the heavy rainfall in the region.
    • Atmospheric Forcing and Eastward Moving Troughs: Large-scale atmospheric forcing, in the form of outflows in the upper layers of the atmosphere, moved eastward through mid-latitude troughs. These troughs directed the flow of moisture towards the Himalayan region, exacerbating the intensity of the rainfall.
    • Orographic Uplift and Steep Terrain: The steep terrain of the Himalayas, combined with orographic uplift, played a significant role in intensifying the precipitation. When air masses encounter the mountains, they are forced to rise, resulting in enhanced rainfall.
    • Synoptic Conditions and Moisture Intrusion: The synoptic conditions during the period were conducive to heavy rainfall. The monsoon was active, with strong moist easterly winds entering the region. Additionally, there was moisture intrusion from the North Arabian Sea, further augmenting the rainfall.

    Increasing Trend of Extreme Rainfall

    • Tripled Number of Extreme Rainfall Events: Recent studies indicate that the number of extreme rainfall events, defined as rainfall exceeding 15 cm in 24 hours, has tripled in many parts of the country.
    • Prolonged Duration of Rainstorms: The duration of rainstorms has also tripled, indicating that rainfall events are lasting longer, potentially leading to higher rainfall accumulation.
    • Decreased Number of Rainy Days and Hours: The total number of rainy days and hours during the monsoon season has decreased. This means that when it does rain, it tends to be in the form of heavy downpours rather than spread out over more frequent but lighter rainfall events.
    • Regional Variation: Central India has been particularly affected by the increasing trend of extreme rainfall events, with a significant rise in both frequency and intensity.
    • Himalayan Region Prone to Extreme Rainfall: The Himalayan region, with its complex topography and varied weather patterns, is prone to extreme rainfall events. Studies indicate that 65 percent of areas in the region show a positive trend in the frequency of daily rainfall extremes.

    Impact of Arctic Warming on Monsoon Climate

    • Increased Frequency of Blocking Highs and Mid-latitude Troughs: Arctic warming has been observed to influence the monsoon climate through changes in mid-latitude circulation. As the Arctic warms and sea ice recedes, there is growing evidence of an increased frequency of blocking highs and deep mid-latitude troughs. These atmospheric patterns can affect weather systems and contribute to extreme rainfall events during the monsoon season.
    • Influence on Circulation Patterns: Observations and models suggest that Arctic warming can alter circulation patterns, including the movement of air masses, pressure systems, and wind patterns. These changes can have cascading effects on the monsoon climate, including the transport of moisture and atmospheric conditions that contribute to heavy rainfall events.
    • Impact on Monsoon Dynamics: The warming of the Arctic and subsequent changes in circulation patterns can affect the dynamics of the monsoon. This can lead to shifts in moisture inflow, atmospheric stability, and the timing and intensity of rainfall during the monsoon season.
    • Potential for Future Changes: As Arctic warming continues; it is expected that the impacts on the monsoon climate will persist and potentially intensify. This suggests that the influence of Arctic warming on the monsoon may contribute to further changes in extreme precipitation patterns and associated impacts in the future.

    Way forward: Mitigation Strategies for Flooding

    • Robust Early Warning System: Implement a comprehensive early warning system that utilizes meteorological observations, including Doppler weather radar and high-resolution numerical weather prediction models. Advanced technologies like artificial intelligence and machine learning can aid in interpreting the data, enhancing the accuracy and timeliness of alerts.
    • Continuous Monitoring and Flood Warning Systems: Continuously monitor rainfall patterns, river levels, and deploy an advanced flood warning system. This integrated approach allows for timely response and evacuation plans to safeguard vulnerable communities.
    • Flood Risk Maps: Develop flood risk maps incorporating topography, historical flood data, and hydrological modeling. These maps can identify high-risk zones and guide targeted actions to enhance preparedness and resilience.
    • Climate-Resilient Infrastructure: Improve and maintain climate-resilient infrastructure, including robust drainage systems and channels, to prevent waterlogging and minimize flood damage.
    • Land Use Planning and Zoning Regulations: Implement effective land use planning and zoning regulations, designating flash flood-prone areas as non-residential or restricted zones to mitigate potential risks.
    • Protection and Restoration of Natural Ecosystems: Prioritize the protection and restoration of natural ecosystems such as forests and wetlands. These natural buffers can absorb rainfall and reduce runoff, mitigating the intensity of floods.
    • Public Awareness Campaigns: Conduct widespread awareness campaigns to educate individuals on flood response and preparedness. Encourage actions such as evacuation planning, first aid knowledge, and reliance on credible sources of information during emergencies

    Conclusion

    • Recognizing the escalating threat of extreme precipitation events and implementing proactive measures are pivotal in improving India’s resilience to climate-induced disasters. Building resilience is crucial to safeguarding vulnerable communities and ensuring a sustainable future for the nation.

    Also read:

    [Burning issue] Urban Floods in India

  • Urban Deluge due to rising Yamuna Level in Delhi

    yamuna flood

    Central Idea

    • The Yamuna River in Delhi is experiencing it’s highest-ever water levels, causing concerns and necessitating emergency actions.
    • Heavy rainfall in northwest India, including the Yamuna basin states, and increased water release from the upstream Hathnikund Barrage in Haryana are contributing to the unprecedented water levels.

    Unprecedented Water Levels and Emergency Response

    • Delhi’s Yamuna River is currently flowing at the highest-ever recorded level in the city.
    • Delhi CM has written to Union Home Minister, requesting controlled water release from the Hathnikund Barrage to manage the situation.
    • The water release from the barrage, typically around 352 cusecs during non-monsoon months, reached a peak of 3.59 lakh cusecs due to heavy rainfall in northwest India.

    Importance of Water Release

    • Impact of Upstream Water Release: The water level in the Yamuna River in Delhi is determined by the release of water upstream from the Hathnikund Barrage.
    • Regulation of Water Flow: The barrage acts as a regulator and can only control the amount of water released downstream and to canals.
    • Flooding Concerns: Failure to release water from the upstream can lead to increased flooding in areas upstream, including Haryana.

    Potential Consequences of Water Accumulation

    • Increased Flooding: Failure to regulate the water levels in the Yamuna River can result in severe flooding in Delhi and surrounding areas.
    • Infrastructure Damage: High water levels pose a risk to infrastructure, including roads, buildings, and public utilities.
    • Displacement of Residents: Excessive flooding can force people to evacuate their homes, leading to displacement and potential humanitarian challenges.

    Addressing the Emergency

    • Controlled Water Release: Controlled water release from the Hathnikund Barrage can mitigate the flooding risks.
    • Collaboration and Coordination: Cooperation between Delhi and Haryana authorities, as well as with central government agencies, is essential to manage the situation effectively.
    • Monitoring and Emergency Preparedness: Continuous monitoring of water levels, timely communication, and preparedness to handle any evacuation or relief efforts are crucial during this emergency situation.

    Conclusion

    • The unprecedented water levels in the Yamuna River in Delhi demand immediate attention and coordinated efforts to prevent further damage and protect affected communities.

    Also read:

    [Sansad TV] Perspective: Urban Deluge (Floods)

  • Strengthening Disaster Risk Reduction: G20’s Role and Priorities

    Central Idea

    • The G20 nations, representing a population of 4.7 billion people, are exposed to significant risks from natural disasters and face substantial vulnerabilities. In the World Risk Index, four G20 countries are among the top 10 most vulnerable nations. The economic impact of disasters in the G20 countries alone amounts to an estimated annual average loss of $218 billion. It is imperative to prioritize disaster risk reduction measures to mitigate these losses and protect development gains.

    G20’s Role in Driving Global Goals

    • Platform for International Cooperation: The G20 provides a platform for international cooperation and collaboration among the world’s major economies. It brings together leaders from diverse nations to discuss global challenges, share best practices, and coordinate efforts to address common goals.
    • Influence and Economic Power: The G20 nations represent a significant share of the global economy, accounting for approximately 85% of global GDP and two-thirds of the world’s population. Their collective influence and economic power give them the capacity to drive global initiatives and mobilize resources to address pressing issues.
    • Promoting Policy Coherence: The G20 promotes policy coherence by fostering dialogue and coordination among its member nations. Through discussions, agreements, and joint statements, the G20 seeks to align policies and actions to address global challenges, including those related to disaster risk reduction.
    • Innovative Financing Mechanisms: The G20 has the ability to explore and promote innovative financing mechanisms for global goals. This includes mobilizing financial resources from governments, multilateral institutions, capital markets, insurance companies, philanthropies, and communities. By maximizing the impact of financial resources, the G20 can support initiatives related to disaster risk reduction and other priority areas.
    • Advancing International Frameworks and Agreements: The G20 plays a vital role in advancing international frameworks and agreements related to disaster risk reduction. For instance, the G20 can support the implementation of the Sendai Framework for Disaster Risk Reduction, which provides a global roadmap for reducing disaster risks and enhancing resilience.
    • Sharing Best Practices and Lessons Learned: Through the G20 platform, member countries can share best practices, experiences, and lessons learned in disaster risk reduction. This exchange of knowledge and expertise contributes to the development of effective strategies, policies, and approaches that can be replicated and scaled up globally.
    • Driving Innovation and Research: The G20 can drive innovation and research by promoting investment in research and development related to disaster risk reduction. This includes supporting scientific advancements, technological innovations, and data-driven approaches that enhance understanding, preparedness, and response to disasters.
    • Influencing Global Agendas: As major economies, the G20 nations have significant influence on global agendas. By prioritizing and advocating for specific issues, such as disaster risk reduction, the G20 can shape global discourse, policies, and actions, mobilizing international attention and resources towards addressing these challenges

    The vulnerability of G20 countries to disasters

    • Geographic Location: Several G20 countries are located in regions prone to specific hazards. For instance, countries like Japan, Indonesia, Mexico, and Turkey are situated in seismically active zones, making them vulnerable to earthquakes and tsunamis. Coastal nations, including the United States, China, India, Brazil, and Australia, face the risks of tropical cyclones, storm surges, and coastal flooding.
    • Climate Extremes: G20 countries experience a wide range of climate-related hazards. For instance, Canada and Russia face risks associated with extreme cold, while Australia and Brazil are susceptible to wildfires and droughts. Heatwaves and heavy rainfall leading to floods pose significant risks in countries like India, Germany, and South Korea.
    • Population Density: Several G20 countries have high population densities, increasing their vulnerability to disasters. The concentration of people and infrastructure in urban areas amplifies the potential impacts of hazards such as earthquakes, floods, and storms. Cities like Tokyo, Mexico City, Mumbai, Istanbul, and Shanghai face unique challenges due to their large populations and exposure to multiple hazards.
    • Infrastructure and Urbanization: Rapid urbanization and inadequate infrastructure planning can exacerbate vulnerability to disasters. Poorly constructed buildings, inadequate drainage systems, and improper land use practices can heighten the impacts of hazards. G20 countries with rapid urban growth, such as China and India, face challenges related to resilient urban development.
    • Socioeconomic Factors: Socioeconomic factors such as poverty, inequality, and limited access to resources can increase vulnerability to disasters. Countries with significant disparities in wealth distribution, such as India, Brazil, and South Africa, often face challenges in adequately addressing disaster risks and providing timely response and recovery.
    • Environmental Degradation: G20 countries also grapple with environmental degradation, which can exacerbate vulnerability to disasters. Deforestation, soil erosion, and loss of wetlands and natural buffers diminish the ability of ecosystems to mitigate and absorb the impacts of hazards. This is particularly relevant for countries like Brazil, Indonesia, and Russia, which are home to ecologically sensitive regions

    India’s Leadership in Disaster Risk Reduction (DRR)

    • Initiating a New Workstream in G20: India has taken a proactive step by initiating a new workstream within the G20 focused on disaster risk reduction. This highlights India’s recognition of the importance of international collaboration and concerted efforts to address disaster risks at a global level.
    • Five Priorities Outlined in the Working Group: In the first meeting of the G20 working group on disaster risk reduction, India put forth five priorities to guide the group’s efforts. These priorities include universal coverage of early warning systems, emphasis on disaster and climate-resilient infrastructure, improving financing frameworks, enhancing response capabilities, and applying ecosystem-based approaches to disaster risk.
    • Transforming Disaster Financing: India has spearheaded efforts to transform the way governments finance disaster risk reduction. Recognizing the limitations of traditional budget allocations, India has explored innovative financing tools and mechanisms. This includes creating reserve funds, dedicated lines of credit, and leveraging global resources to support disaster-resilient infrastructure development.
    • Targeted Efforts to Reduce Losses: India has made targeted efforts to reduce losses from disasters through comprehensive risk management strategies. By focusing on areas such as flood risk management, India has implemented measures to minimize the impacts of extreme weather conditions, protect lives, and enhance disaster preparedness.
    • Coalition for Disaster Resilient Infrastructure (CDRI): India and the United States currently co-chair the Coalition for Disaster Resilient Infrastructure. The CDRI aims to promote investments in resilient infrastructure and foster international collaboration to enhance disaster resilience globally. India’s leadership in this coalition reflects its commitment to driving resilience-building efforts.
    • Implementation of Sendai Framework: India has aligned its disaster risk reduction efforts with the Sendai Framework, a global framework for DRR. The 10-point agenda outlined by India’s Prime Minister after the adoption of the Sendai Framework guides the country in the implementation of comprehensive DRR strategies.

    Key Themes for Future Action

    • Reimagining Financing for Disaster Risk Reduction: Explore innovative financing tools, including reserve funds, dedicated lines of credit, and global resource mobilization. While green financing has gained momentum, greater attention should be given to disaster risk financing, especially for countries like India with increasing capital expenditure.
    • Differential Strategies for Extensive and Intensive Risks: Develop targeted approaches to reduce losses from frequent but moderate impact events (extensive risks) such as heatwaves, lightning, floods, and landslides. These events accumulate significant losses and necessitate specific risk reduction measures.
    • Convergence of Disaster Risk Reduction and Climate Change Adaptation: Integrate efforts to address both disaster risk reduction and climate change adaptation. Analytical and implementation capacities for disaster risk reduction should support climate change adaptation, ensuring synergies between flood management structures and adaptation efforts.
    • Priority Access to Early Warning Systems: Early warning systems, such as cyclone early warnings, should be treated as global public goods, accessible to all populations irrespective of their economic strength. The G20 can lead by example, setting up mechanisms to ensure universal access to early warning systems in line with the UN Secretary General’s initiative.
    • Multi-tiered and Multi-sectoral Effort: Disaster risk reduction requires an integrated approach across levels and sectors. Integration from local to global levels and horizontal collaboration across sectors will enhance readiness to manage unknown risks, considering the interlinkages and interdependence of the world

    Need for Convergence of Disaster Risk Reduction and Climate Change Adaptation

    • Shared Risks and Drivers: Both DRR and CCA address risks associated with natural hazards and climate change impacts. Disasters are often exacerbated by climate change, while climate change can intensify the frequency and severity of disasters. Converging efforts allows for a comprehensive and integrated approach to address these shared risks and underlying drivers.
    • Synergies in Solutions: DRR and CCA strategies share common elements and can leverage synergies in their solutions. For example, building disaster-resilient infrastructure can contribute to climate change adaptation by considering future climate scenarios. Similarly, nature-based solutions, such as protecting and restoring ecosystems, can provide benefits for both disaster risk reduction and climate resilience.
    • Efficiency and Resource Optimization: Converging DRR and CCA efforts allows for the efficient use of resources, avoiding duplication and maximizing the effectiveness of interventions. Instead of implementing separate and parallel initiatives, integrated approaches can streamline efforts, optimize funding, and improve overall outcomes.
    • Integrated Risk Management: Combining DRR and CCA enables a holistic approach to risk management. By integrating climate projections, vulnerability assessments, and disaster risk assessments, decision-makers can develop comprehensive risk management strategies that address both current and future risks.
    • Co-benefits for Sustainable Development: Integrating DRR and CCA contributes to sustainable development goals. By reducing disaster risks and enhancing climate resilience, communities can protect livelihoods, preserve ecosystems, ensure food security, and promote social well-being. This integrated approach aligns with the broader agenda of sustainable development.
    • Policy and Institutional Integration: Convergence of DRR and CCA necessitates policy coherence and institutional coordination. Aligning strategies, frameworks, and institutions responsible for DRR and CCA facilitates better integration of risk reduction and adaptation measures. This coordination strengthens governance structures and enhances implementation effectiveness.
    • Adaptive Capacity Building: Addressing the interconnected challenges of disasters and climate change requires enhancing adaptive capacities at various levels. By combining efforts, stakeholders can work collaboratively to build capacities for disaster response, early warning systems, community engagement, and climate-resilient practices, thereby enhancing overall resilience.

    Conclusion

    • Disaster preparedness has been a priority of India for last few years. India has taken significant steps in transforming disaster risk reduction financing and targeted loss reduction efforts. Chairing the Coalition for Disaster Resilient Infrastructure alongside the United States, India’s commitment to disaster preparedness is reflected in the creation of a new workstream under the G20. By leveraging their economic power, promoting policy coherence, and fostering international cooperation, the G20 can contribute to building a safer, more resilient, and sustainable world.

    Also read:

    India’s G20 Presidency and Disaster Risk Management