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Climate change is reshaping how we build, invest, and live. At Chakor, our Climate Change section explores the intersection of environmental responsibility and the built environment, covering green architecture, sustainable developments, climate-resilient infrastructure, and the policies driving change across Pakistan and beyond.

Stay informed on how shifting climate patterns are influencing real estate decisions, urban planning, and investment strategies, so you can think ahead and act responsibly.

Water Security
CategoriesClimate Change Urban Developments & Planning Urban Flooding Weather

Water Security: Avoid Flood Risks with Rainwater Harvesting (2026)

Water is essential to life, yet the world faces a growing paradox: some regions struggle with too little water, while others are increasingly overwhelmed by too much. Both scenarios fall under one critical concept: water security. While most people associate this with drought and scarcity, it equally concerns the destructive risks of excess water, particularly flooding.ย 

This article explores what water security truly means, why urban flooding is becoming a growing threat, and how a simple, time-tested solution, rainwater harvesting, can help communities strengthen their security of water while reducing flood risks.

What Is Water Security?

Water Security

Water security refers to the reliable availability of an acceptable quantity and quality of water for health, livelihoods, and economic production, combined with an acceptable level of water-related risk.

In simpler terms, water sustainability isn’t just about having enough water; it’s about managing water safely, sustainably, and resiliently, so that it neither runs out nor causes harm.

According to UN-Water, security of water is “the capacity of a population to safeguard sustainable access to adequate quantities of acceptable quality water for sustaining livelihoods, human well-being, and socio-economic development, while ensuring protection against water-related disasters.”ย 

This definition highlights an important truth: water security is a balancing act. It requires managing the following things at once:

  • Water scarcity โ€“ ensuring enough water is available to meet demand
  • Water quality โ€“ keeping that water safe and free from contamination
  • Water-related disasters โ€“ protecting communities from floods, droughts, and other water-driven shocks

Achieving security of water also means addressing risk at every level of society:

  • Household level โ€“ reliable, safe access for daily drinking, cooking, and sanitation needs
  • Community level โ€“ shared infrastructure like wells, pipelines, and local drainage systems functioning safely
  • City level โ€“ stormwater management, treatment plants, and supply networks built to handle demand and extreme weather
  • National level โ€“ policies, investment, and coordination across regions and river basins

When any one of these levels fails to manage water risk effectively, the consequences can be severe:

  • Contaminated drinking water
  • Damaged infrastructure
  • Displaced communities
  • Long-term economic setbacks

The Three Pillars of Water Security

To fully understand water security, it helps to break it down into three interconnected pillars:

  1. Availability โ€“ Having enough water to meet the needs of people, agriculture, industry, and ecosystems.
  2. Quality โ€“ Ensuring that available water is safe, clean, and free from harmful contaminants.
  3. Risk Management โ€“ Protecting communities from water-related disasters, including flash floods, droughts, and infrastructure failures.

3 pillars

Most conversations around security of water focus heavily on scarcity and rightly so, given that millions of people worldwide lack reliable access to clean water. However, the risk management pillar of water security is just as important, and it’s here that flooding becomes a central concern.

A community can have abundant water resources and still suffer a severe water security crisis if a flood destroys its water infrastructure or contaminates its drinking supply.

Urban Flooding, Climate Change, and Water Security

Urban Flooding

One of the most pressing challenges to water security today is the rise of urban flooding driven by climate change. As global temperatures increase, rainfall patterns are becoming more erratic and extreme.

Instead of steady, predictable precipitation, many regions are now experiencing short bursts of intense rainfall that overwhelm drainage systems within minutes.

Why Cities Are Especially Vulnerable

Cities Are Especially Vulnerable

Cities are particularly vulnerable to this shift. Urban landscapes are dominated by concrete, asphalt, and rooftops impervious surfaces that prevent rainwater from soaking into the ground.

Instead of being absorbed naturally, rainwater rushes across these hard surfaces, collecting pollutants and rapidly overwhelming stormwater drains.

The result is urban flooding: streets submerged in water, basements flooded, and in severe cases, contaminated water supplies and displaced families.

When Flooding Becomes a Water Security Crisis

Cities Are Especially Vulnerable

This connection between urban flooding, climate change, and security of water cannot be overstated. When floodwaters mix with sewage or industrial runoff, they compromise drinking water quality, turning what should be a water abundance problem into a water security crisis.

In coastal and low-lying urban areas, monsoon-driven flooding has been shown to pollute municipal water supplies, forcing communities to rely on unsafe water sources in the flood’s aftermath.

This is a clear example of how flooding, even when it brings excess water, directly undermines water security rather than improving it.

The Role of Poor Urban Planning

The Role of Poor Urban Planning

Urban planning plays a central role in shaping how effectively a city manages its water resources and protects itself from flood risk. Poor urban planning compounds the issue. Rapid, unregulated urbanisation often outpaces the development of adequate drainage and stormwater infrastructure.

As more green spaces are paved over, natural water absorption capacity disappears, and the risk of flash flooding grows.

Without deliberate intervention, water security in fast-growing cities will continue to deteriorate as climate change intensifies rainfall extremes.

How Rainwater Harvesting Strengthens Water Security

Rainwater Harvesting Strengthens Water Security

Fortunately, there is a practical, scalable solution that addresses both sides of the water security equation: rainwater harvesting. Rainwater harvesting is the practice of collecting, storing, and using rainwater rather than allowing it to run off uncontrolled into drains, streets, or waterways.

It can be as simple as a rooftop catchment system connected to a storage tank, or as sophisticated as large-scale urban infrastructure designed to capture and redirect stormwater.

By intercepting rainwater at its source, rainwater harvesting reduces the volume of water that would otherwise contribute to surface runoff and flash flooding. This makes it one of the most effective, low-cost tools for improving security of water in both urban and rural settings.

Rainwater Harvesting Benefits

The rainwater harvesting benefits extend far beyond flood prevention, making it a cornerstone strategy for long-term water security:

  • Reduces surface runoff and flood peaks โ€“ By capturing rainwater before it reaches the ground, harvesting systems lower the volume and speed of runoff, easing pressure on drainage systems during heavy storms.
  • Recharges groundwater โ€“ Excess harvested water can be directed into the ground, replenishing aquifers and supporting long-term security of water for the surrounding region.
  • Reduces pressure on stormwater infrastructure โ€“ Aging or undersized municipal drainage systems benefit significantly when a portion of rainfall is captured before it ever enters the system.
  • Provides an alternative water source โ€“ Harvested rainwater can supplement household and agricultural water use, strengthening security of water during dry spells or supply disruptions.
  • Improves water quality โ€“ By reducing the volume of runoff that picks up pollutants from streets and rooftops, rainwater harvesting helps limit contamination of rivers, lakes, and drinking water sources.

Together, these benefits illustrate why rainwater harvesting is not just an environmental nicety; it’s a direct, actionable contributor to water security at the household, community, and city level.

Rainwater Harvesting as a Flood Risk Mitigation Strategy

Rainwater Harvesting as a Flood Risk Mitigation Strategy

While large-scale flood infrastructure like levees, dams, and stormwater drains remain essential, they are not always sufficient on their own, especially as climate change pushes rainfall intensity beyond the design capacity of aging systems.

Rainwater harvesting offers a complementary, decentralised approach to flood risk management that strengthens overall water security.

Several practical methods make this possible:

  • Rooftop rainwater harvesting systems: Gutters and downspouts direct roof runoff into storage tanks instead of the street, reducing the immediate burden on drainage systems.
  • Rain gardens and bioswales: These landscaped depressions absorb and filter runoff before it reaches storm drains, slowing the flow of water during heavy rain.
  • Permeable pavements: Unlike traditional concrete, permeable surfaces allow rainwater to seep into the ground rather than running off, reducing flood volume in parking lots, driveways, and walkways.
  • Retention and detention ponds: These structures temporarily hold large volumes of stormwater, releasing it gradually to prevent sudden surges downstream.

When implemented at scale across households, neighbourhoods, and municipal planning, these rainwater harvesting techniques can meaningfully reduce flood peaks during extreme weather events.

They don’t eliminate the need for traditional flood infrastructure, but they significantly ease the burden on it, creating a more resilient, multi-layered defence system. This is precisely the kind of integrated approach that strengthens water security over the long term.

How Individuals and Communities Can Start Rainwater Harvesting

You don’t need to wait for large-scale government infrastructure to start improving water security in your own home or neighbourhood. Here’s a practical starting checklist:

  1. Assess your rooftop catchment area โ€“ Larger roofs can capture more rainwater, giving you a sense of your harvesting potential.
  2. Install gutters and downspouts โ€“ Direct roof runoff toward a designated collection point rather than the street or drain.
  3. Choose appropriate storage โ€“ Options range from simple rain barrels to large underground cisterns, depending on your space and water needs.
  4. Add a first-flush diverter โ€“ This component discards the initial, dirtiest runoff before clean water enters your storage tank.
  5. Check local building codes โ€“ Many municipalities have specific guidelines or incentives for rainwater harvesting systems.
  6. Consider a rain garden โ€“ If a full harvesting system isn’t feasible, even a small rain garden can absorb runoff and support local security of water.

Adopting these steps at a household level, combined with community-wide adoption, can meaningfully reduce local flood risk while contributing to broader water security goals.

Frequently Asked Questions

Water scarcity is simply a shortage of available water, while security of water is broader; it also covers water quality and protection from disasters like floods. A region can even face water security risks despite having abundant water.

Yes. It captures rainwater at the source, reducing runoff volume and speed, which lowers flood peaks during heavy storms.

Absolutely. Urban areas benefit the most, since rainwater harvesting directly addresses the runoff problem caused by concrete and rooftops.

Climate change intensifies rainfall extremes, driving both severe droughts and more frequent flooding, making security of water harder to maintain.

Conclusion

Water security means more than just having access to water; it’s about managing it wisely, protecting its quality, and reducing risks from both scarcity and excess. As urban flooding intensifies with climate change, rainwater harvesting offers a practical, scalable way to reduce flood risk, recharge groundwater, and strengthen security of water at every level.

By treating security of water as a holistic goal, individuals, communities, and governments can build a more flood-resilient, water-secure future for generations to come.

This was all about Water Security. For more information on rainwater harvesting systemsย andย real estate investment options, please visitย Chakor.

Delays in University Road Repairs
CategoriesNews Climate Change Construction Developments Urban Flooding Weather

Delays in University Road Repairs Raise Monsoon Flooding Concerns

KARACHI: Gulshan-e-Iqbal Town Chairman Dr Fawad Ahmed has issued a stark warning that a key stretch of Karachi’s University Road could become a serious hazard if monsoon rains arrive before ongoing infrastructure work is completed. Speaking at a press conference held at the Gulshan-e-Iqbal Town Municipal Corporation council hall, Dr Ahmed described the situation as one that could quickly spiral into a full-blown emergency for commuters.

His remarks focused specifically on the segment of road between Hassan Square and Nipa, an area currently undergoing excavation for the Red Line Bus Rapid Transit (BRT) project.

According to Dr Ahmed, the digging has left the roadway riddled with pits and uneven surfaces, posing a significant risk to motorists and pedestrians alike, particularly once heavy rainfall sets in.

The town chairman also used the platform to voice strong opposition to a proposed flyover near Disco Bakery. He argued that the project was both unnecessary and impractical, cautioning that it could intensify traffic congestion rather than relieve it.

He pointed out that a substantial portion of University Road traffic has already been redirected to Shabbir Usmani Road, undermining the rationale for the flyover.

Compounding the issue, Dr Ahmed noted that the K-IV water supply augmentation line is also slated to pass through Shabbir Usmani Road, a factor that would further complicate flyover construction in that corridor.

He said these concerns have already been formally communicated to Karachi’s mayor, and he called on the provincial government to abandon the flyover plan altogether in favour of removing encroachments to improve traffic flow.

Separately, Dr Ahmed presented the town’s performance report for the outgoing period and announced a budget of Rs. 4.7795 billion for the 2026โ€“27 fiscal year, with 75 percent of the allocation directed toward development projects across Gulshan-e-Iqbal Town.

For moreย real estateย newsย and special reports, visitย Chakor.

Source:

Urban Recharge Wells in Islamabad
CategoriesClimate Change Dams Deforestation Urban Flooding Weather

Rainwater Harvesting Pakistan: Proven Tips 2026

Pakistan is running out of water. Annual per capita water availability has fallen from over 5,000 cubic metres at independence to below 1,000 cubic metres today, pushing the country into the “water-scarce” category. Rainwater harvesting Pakistan offers one of the most practical, low-cost ways to slow this decline. It collects rain that would otherwise run off roofs, roads and open land, then stores it for reuse or sends it underground to recharge depleting aquifers.

This guide explains why rainwater harvesting Pakistan has become urgent, how the systems work, what government bodies are doing about it, and how households, builders and communities can take part.

Why Rainwater Harvesting in Pakistan Matters Right Now

Rainwater Harvesting Pakistan

Water scarcity in Pakistan is not a future risk. It is a present reality. The country now sits among the ten most water-stressed nations in the world. Groundwater tables are dropping in major cities, canal supplies are stretched thin, and more than half the population lacks access to safely managed drinking water.

A few numbers explain the scale of the problem:

  • Per capita water availability has dropped from around 5,260 cubic metres in 1951 to under 900 cubic metres today.
  • Pakistan can store only about 30 days of water nationally, far short of the 1,000-day buffer recommended for arid countries.
  • Roughly 90 percent of agricultural output depends on a single source, the Indus Basin Irrigation System.
  • Around 93 percent of available water goes to agriculture, leaving a thin margin for cities and households.

Rainwater harvesting Pakistan will not solve this crisis alone, but it reduces pressure on groundwater, cuts urban flooding, and gives households and buildings a backup source of water during dry months.

Climate Change in Pakistan and the Changing Rainfall Pattern

Catastrophic impacts of climate change

Climate change in Pakistan is making the water problem harder to manage, not easier. Rainfall has become more erratic. Long dry spells are now followed by short, intense monsoon bursts that overwhelm drains instead of soaking into the ground.ย 

Experts from the International Water Management Institute have pointed to a rise in heatwaves and heavy precipitation events across South Asia linked to human-induced climate change, with Pakistan experiencing both extremes within the same year.

Rainwater Harvesting in Pakistan

This swing between drought and flood is exactly the pattern rainwater harvesting in Pakistan is designed to manage. Storage tanks and recharge wells capture sudden heavy rain instead of letting it flood streets, then release that water slowly for use during the dry months that follow.

How Rainwater Harvesting Systems Work

Rainwater catchment

A basic rainwater harvesting system follows a simple path:

  1. Catchment โ€“ Rain lands on a roof, terrace, courtyard or paved surface.
  2. Conveyance โ€“ Sloped surfaces and pipes direct the water toward a collection point.
  3. Filtration โ€“ A first-flush diverter and filter screen remove dust, leaves and debris from the initial runoff.
  4. Storage or recharge โ€“ Water is either stored in a tank for reuse or channeled into a recharge well or pit to replenish groundwater.

Stored rainwater is generally used for gardening, washing, cleaning, and flushing. It is not safe for drinking unless it passes through proper treatment and testing.

Storage Tanks vs Recharge Wells -Rainwater Harvesting Pakistan

System Best suited for What it does
Storage tank Homes, farmhouses, offices Collects water for direct household reuse
Recharge pit Small plots, gardens, open land Lets filtered water percolate into the soil
Recharge well Large properties, mosques, apartment blocks Sends filtered surplus water deep underground to recharge the aquifer

Most well-designed projects use a combination: a tank for everyday reuse and a recharge point for any overflow during heavy rain.

Rainwater Harvesting Pakistan in Practice: Cities and Deserts

Rainwater Harvesting in Pakistan

Urban Recharge Wells in Islamabad and Lahore

The Capital Development Authority has made rooftop rainwater harvesting mandatory for new construction in Islamabad under its building bylaws.

The authority has also been installing groundwater recharge wells across the city, working alongside the Pakistan Council of Research in Water Resources (PCRWR).ย 

At one recharge site in Islamabad, researchers recorded a rise in the water table of nearly five metres after monitoring rainfall between May and September.

In Lahore, the Water and Sanitation Agency has built underground water tanks in flood-prone neighbourhoods. One such tank, built at a cost of Rs. 140 million, can hold 1.4 million gallons of rainwater drawn from a 30-acre catchment area.ย 

The collected water is later used to irrigate public parks and green belts, easing pressure on piped supply while also reducing urban flooding.

Rainwater Harvesting in the Cholistan Desert

Rainwater Harvesting in the Cholistan Desert

Rainwater harvesting Pakistan also plays a critical role far from major cities. In the Cholistan desert, rainfall is the only realistic water source for nomadic communities and their livestock. PCRWR has built a network of over 110 reservoirs across 26,000 square kilometers of desert, with a combined storage capacity of 440 million gallons.ย 

This network, paired with newly drilled tubewells, has cut seasonal migration and saved an estimated Rs. 6 billion a year in losses linked to livestock movement and water shortages.

Benefits of Rainwater Harvesting Pakistan

  • Reduces dependence on groundwater, slowing the decline of water tables in over-extracted areas.
  • Lowers urban flood risk by capturing runoff before it overwhelms drains and roads.
  • Provides a backup water source for gardening, cleaning, and non-drinking household use during dry spells.
  • Supports agriculture and livestock in arid and desert regions where canal water never reaches.
  • Improves long-term building resilience, especially in cities where municipal supply is already intermittent.

Common Mistakes That Cause Rainwater Harvesting Pakistan Systems to Fail

Rainwater harvesting projects in Pakistan often fail for avoidable reasons:

  • Sending unfiltered roof water directly into a recharge well, which pushes silt and pollutants into the aquifer.
  • Undersized overflow pipes that cannot handle monsoon-level rainfall.
  • Tanks and filter chambers buried under finished paving with no access for cleaning.
  • Using one generic design across very different properties, rather than sizing the system to the actual roof area, rainfall pattern, and household need.

A system built without proper filtration and maintenance access may look fine in its first year and then fail during the next serious monsoon.

Frequently Asked Questions – Rainwater Harvesting Pakistan

Is rainwater harvesting mandatory anywhere in Pakistan?ย 

Yes. Islamabad’s Capital Development Authority has made rooftop rainwater harvesting mandatory for new construction under its building bylaws.

Can harvested rainwater be used for drinking?ย 

Not without treatment. Most systems are designed for gardening, washing, cleaning, and flushing rather than direct drinking use.

What causes water scarcity in Pakistan?ย 

Rapid population growth, heavy reliance on a single river system, limited water storage infrastructure, and increasingly erratic rainfall linked to climate change in Pakistan have combined to push per capita water availability below internationally recognised scarcity thresholds.

Does rainwater harvesting Pakistan help with urban flooding?ย 

Yes. Storing and redirecting heavy rainfall through tanks and recharge wells reduces the volume of runoff that would otherwise overwhelm city drains.

Final Word

Rainwater harvesting in Pakistan sits at the intersection of two growing problems: worsening water scarcity in Pakistan and the unpredictable rainfall brought on by climate change in Pakistan. Government-led projects in Islamabad, Lahore and the Cholistan desert show that the approach works at very different scales, from a single rooftop system to a desert-wide reservoir network. For households, builders and communities alike, treating rainwater as a resource rather than a runoff problem is one of the most direct ways to respond to Pakistan’s deepening water crisis.

This was all about rainwater harvesting Pakistan. For more information onย rainwater harvesting systemsย andย real estate investment options, please visitย Chakor.

rainwater harvesting system
CategoriesClimate Change Dams Deforestation Environment Urban Developments & Planning Urban Flooding

Rainwater Harvesting System: Complete Guide, Benefits & Cost 2026

Water shortage is a real problem in most cities today. Borewells run dry. Water bills keep rising. Groundwater levels keep falling. A rainwater harvesting system offers a simple, low-cost fix. It collects rain that would otherwise run off your roof or yard and turns it into a usable water source for drinking, irrigation, flushing, or simply topping up the ground beneath your feet.

This guide covers everything about a rainwater harvesting system: what it is, how it works, its components, methods, benefits, cost, water quality standards, and the rules that apply in Pakistan. By the end, you will know exactly how to plan one for your home, office, or institution.

What Is a Rainwater Harvesting System?

rainwater harvesting system

According to Encyclopaedia Britannica, a rainwater harvesting system is a technology that collects and stores rainwater for human use. Systems range from simple rain barrels to elaborate structures with pumps, tanks, and purification units. The stored water can irrigate landscaping, flush toilets, launder clothes, or even be purified for drinking.

Instead of letting rain run into the street or drain away, a rainwater harvesting system directs it through gutters and pipes into a storage tank or into the ground. Researchers describe every rainwater harvesting system (RWHS) as sharing four core parts: a catchment area, gutters, pipes, and a storage system. Everything else- filters, pumps, recharge wells, treatment units- builds on that basic four-part foundation.

The idea itself is old. People have collected rainwater for thousands of years. Ancient cisterns dating back to 2500 BC have been found in the Middle East, and rainwater harvesting for irrigation dates back to roughly 4500 BC in southern Mesopotamia. Roman cities used rooftop channels and aqueducts long before modern gutters existed.

Farming communities in Balochistan practiced rainwater harvesting around 300 BC. The method has simply been refined with better tanks, filters, and monitoring tools, and in some university research projects today, even Building Information Modeling (BIM) and augmented reality.

Why a Rainwater Harvesting System Matters Right Now

rainwater harvesting system

Water stress is no longer a distant concern. Reports cited by industry sources suggest more than half the world’s population will be living in water-stressed regions by 2050.

Pakistan is a clear example. According to Abamet Pakistan, an environmental engineering firm, Pakistan is technically a “water-stressed” country rather than a “water-scarce” one, but it wastes nearly 10 trillion gallons of water every year due to poor conservation.

A rainwater harvesting system is one of the most direct ways to close that gap, because it captures free water at the exact point where it is needed most.

The United Nations’ Intergovernmental Panel on Climate Change (IPCC) has listed rainwater harvesting among specific measures for adapting to climate change.

In Semarang, Indonesia, a city badly affected by climate-driven flooding and drought, a rainwater harvesting system built into public schools now channels collected water into daily use and groundwater recharge, directly benefiting more than 20,500 people.

This shows how a single, simple technology can serve two opposite climate problems at once: it eases drought by storing water, and it eases flooding by capturing runoff before it overwhelms drains.

How Does a Rainwater Harvesting System Work?

A rainwater harvesting system works in four simple stages: catchment, conveyance, filtration, and storage or recharge.

  1. Catchment: Rain falls on a roof, terrace, or paved surface. This surface is called the catchment area.
  2. Conveyance: Gutters and downpipes carry the water from the roof to the storage point.
  3. Filtration: Before the water reaches the tank, it passes through a first-flush diverter and a filter. This removes dust, leaves, and bird droppings.
  4. Storage or recharge: Clean water is stored in a tank for reuse, or it is directed into a recharge well or pit so it seeps into the ground and refills the water table.

Gravity does most of the work in a well-designed rainwater harvesting system. Pumps are only needed when water must move uphill, into upper floors, or through pressurised taps.

Methods of Rainwater Harvesting

There are two broad methods used in any rainwater harvesting system, and within each, two purpose-based categories worth knowing.

1. Rooftop Rainwater Harvesting

rainwater harvesting system pakistan

This is the most common method for homes, apartments, schools, and offices. Rain falling on the roof is captured through gutters and either stored in a tank or directed to a recharge well.

Roof runoff is generally of higher quality than surface runoff and can often be used with only basic treatment. It is simple, affordable, and works well for houses, mosques, factories, hotels, and multi-storey buildings.

2. Surface Runoff Harvesting

Surface Runoff Harvesting

This method collects rainwater flowing across the ground, such as from a courtyard, driveway, or open plot. The runoff is channelled into a storage tank or recharge pit below ground level.

It works well for larger plots and is often used alongside rooftop systems to capture every drop of rain falling on a property, while also cutting soil erosion, water pollution, and street flooding.

Domestic vs. Agricultural Rainwater Harvesting

Beyond catchment type, rainwater harvesting is also split by purpose. Domestic rainwater harvesting (DRWH) serves household needs: drinking, washing, gardening, and flushing.

Agricultural and livestock rainwater harvesting (ARWH) serves larger-scale needs through pans, hafir dams, birkads, check dams, sand dams, and agricultural bunds, structures built to trap surface runoff for crops, livestock, and groundwater recharge in arid and semi-arid regions.

Both approaches share the same underlying goal: intercept rain before it is lost, and put it to productive use.

Key Components of a Rainwater Harvesting System

Every rainwater harvesting system, small or large, domestic or industrial, is built from a similar set of parts.

  • Catchment surface: Usually a roof, terrace, or courtyard. Roofing material affects water quality. Metal sheets and glazed tiles perform well; thatched roofs discolour the water and lower quality.
  • Coarse mesh: A screen at the roof or tank inlet that prevents leaves and large debris from entering the system.
  • Gutters: Channels fixed along the roof edge that collect rain and guide it toward a downpipe. Gutters should be sized 10โ€“15% larger than the expected peak flow so they do not overflow, and given a gentle slope of about 10 mm fall per metre to avoid standing water.
  • Downpipes (conduits): Pipes, usually PVC or galvanised iron, that carry water from the gutter down to ground level. Pipe diameter should match rainfall intensity and roof area; a larger, high-intensity roof needs a wider downpipe to avoid backflow during heavy storms.
  • First-flush diverter: A valve that discards the initial rainfall, which carries the most dust, pollen, and pollutants washed off a dry roof.
  • Filter: A chamber filled with sand, gravel, charcoal, or fine mesh that removes suspended particles before water enters the tank. Filter designs range from simple household charcoal and sand filters to advanced multi-chamber units like the Dewas filter, the VARUN drum filter, horizontal roughing and slow sand filters (HRF/SSF), and compact potable-conversion units such as the RainPC, which combines screening, flocculation, and membrane filtration to bring rainwater up to WHO drinking-water standards.
  • Storage tank: Can be built above ground, underground, or partly buried. Common materials include reinforced concrete, ferrocement, masonry, HDPE plastic, fibreglass, and galvanised steel. Tank scale varies enormously, from small garden water butts of a few hundred litres to large underground commercial tanks holding well over 100,000 litres.
  • Overflow pipe: Directs excess water away safely once the tank is full, so it does not flood the roof, driveway, or a building’s boundary wall.
  • Recharge structures: Where storage is not the only goal, surplus filtered water can be sent into recharge wells, recharge pits, recharge trenches, recharge troughs, or modified injection wells, all designed to let water percolate into the ground and restore the local aquifer rather than run to waste.
  • Pump and controls (optional): Used when water needs to reach upper floors or pressurised taps. A water level indicator and flow meter with a data logger help track usage and detect problems early.
  • Backflow preventer: Stops rainwater from flowing backwards into a municipal or well water supply under negative pressure, an important safety feature for any hybrid system.
  • Treatment unit (optional): UV lights, chlorination, or fine membrane filters, needed only if the water will be used for drinking. Full potable treatment typically removes at least 99% of particles 3 microns or larger and includes daily water-quality testing.

Step-by-Step: How to Set Up a Rainwater Harvesting System

Installing an efficient rainwater harvesting system generally follows four practical steps:

  1. Determine and clean your catchment area. Identify the terrace, courtyard, or roof section that will feed the system, and clean it thoroughly to prevent contamination at the very first stage.
  2. Plan the layout. Decide where tanks and pipelines will sit to make the best use of your available collection surfaces. Common layouts include a single large tank or a cluster of smaller linked tanks.
  3. Set up storage. Every drainpipe and collection point should include a mesh filter and first-flush diverter, a filtration stage before the tank, an air gap to prevent backflow, and an overflow route, ideally connected to a recharge system rather than a storm drain.
  4. Install the pipes and tanks. Lay pipes with a single, consistent fall to avoid sediment traps that are hard to clean. Secure the tanks on a stable stand, connect them so they function as a single storage volume, install isolation valves for maintenance, and finish with a tank gauge so water levels can be monitored at a glance.

How Much Water Can You Actually Collect?

You can estimate the water your roof can capture with a simple formula, essentially the same one used by both the U.S. Department of Energy’s Federal Energy Management Program and independent engineering manuals:

Water collected (litres) = Roof area (mยฒ) ร— Rainfall (mm) ร— Runoff coefficient

For example, a 300 mยฒ roof catching 25 mm of rain, with a runoff coefficient of 0.9 for a smooth metal or tiled roof, would collect roughly 6,750 litres in a single rain event, before losses from the first-flush diverter and minor leaks. The U.S. Department of Energy recommends applying a collection factor of 75โ€“90% to account for real-world system losses.

The runoff coefficient changes with roof material:

Roof Type Runoff Coefficient
Metal (GI) sheet 0.8โ€“0.9
Glazed tiles 0.6โ€“0.9
Concrete/RCC roof 0.7โ€“0.8
Asbestos (existing roofs only) 0.8โ€“0.9
Thatched roof 0.2

There are three broad approaches used to size a storage tank:

  • Common-side approach: Uses mean annual rainfall to estimate how much water a roof can realistically supply, then sizes the tank to meet roughly a quarter’s worth of demand.
  • Demand-side approach: Bases tank size on daily consumption per person, household size, and the longest expected dry spell, useful where rainfall is plentiful and reliable.
  • Supply-side approach: Compares monthly rainfall potential against monthly demand across a full year, useful in low-rainfall or uneven-rainfall regions where storage must bridge real seasonal gaps.

Whichever method is used, tank size should reflect realistic demand, not the theoretical maximum a roof could ever collect.

Benefits of a Rainwater Harvesting System

Research reviews covering the environmental, economic, and social aspects of rainwater harvesting systems consistently find the same core advantages, echoed across engineering, government, and NGO sources alike.

  • Lowers water bills. Once the upfront cost of the system is paid off, harvested rainwater is essentially free. UK homes with rainwater systems commonly cut mains water use by 20โ€“30%, and sometimes by 50% or more, a figure matched by European tank manufacturers who report up to 50% savings on drinking-water demand for homes using underground rainwater harvesting.
  • Supports groundwater levels. Directing surplus rainwater into recharge wells helps restore water tables that have dropped due to overuse of borewells, and reduces the risk of saltwater or brackish intrusion in coastal and low-lying aquifers.
  • Reduces flooding and stormwater runoff. Capturing rain before it reaches the street lowers the load on stormwater drains and reduces non-point source pollution reaching rivers and lakes, especially valuable during monsoon downpours.
  • Improves water security during drought. Stored rainwater acts as a backup source when mains supply is cut, a well runs low, or a drought hits. It can also serve as a main supply for new homes with no access to municipal water.
  • Requires low maintenance. Once installed, a system needs only routine gutter cleaning and periodic tank inspection; tanks and pipework can last 15 to 30 years with basic upkeep.
  • Reduces energy use and emissions. Because rainwater is used close to where it falls, it cuts the energy needed to pump and transport water across a city, and lowers the broader carbon footprint of urban water supply.
  • Adds long-term property value. Buildings with a working rainwater harvesting system often score points under green-building rating programs, and some municipalities offer rebates, tax exemptions, or property-tax reductions for installing one.
  • Supports climate adaptation. International climate bodies now class rainwater harvesting as a formal adaptation measure: it simultaneously builds drought resilience and reduces flood risk, which is why it appears in UN-backed community projects from Indonesia to Jamaica.
  • Cuts soil erosion. In open plots and agricultural land, capturing runoff reduces the speed and volume of water that would otherwise wash away topsoil.

Cost of a Rainwater Harvesting System and Return on Investment

Cost depends on tank size, excavation depth, pipe length, filtration quality, and whether the project is new construction or a retrofit. Broadly, price rises with:

  • Tank material (plastic tanks generally cost less than reinforced concrete)
  • Underground versus above-ground placement
  • Filtration and disinfection equipment, especially if the water will be used for drinking
  • Pump requirements
  • Site conditions, such as soil type and depth to the water table

Independent studies looking at hospital, residential, and office installations found payback periods of roughly 1 year for a hospital-scale system, up to 8 years for an office block, and around 21 years for a smaller residential system, showing that larger, higher-demand buildings generally see a faster return on a rainwater harvesting system than single homes.

Some cities also offer direct incentives: rebates covering up to half the system cost, sales-tax exemptions on harvesting equipment, and property-tax reductions tied to construction costs, all of which shorten the payback period further.

Retrofitting an existing building costs more than planning the system during original construction, since pipe runs and tank pits must work around finished structures.

Architects and engineers recommend including rainwater harvesting in the design stage, alongside plumbing and drainage drawings, rather than adding it as an afterthought.

Water Quality and Safety

Rainwater itself is naturally low in salinity and, scientifically as well as traditionally, considered one of the cleanest available water sources. However, once it touches a roof, it can pick up dust, bird droppings, moss, airborne pollutants, and even trace pesticides during the first rain after a dry spell. This is why filtration matters at every stage of a rainwater harvesting system.

For non-potable use, such as flushing, gardening, and washing, a first-flush diverter plus a basic sand, charcoal, or mesh filter is usually enough. For drinking water, additional treatment is required: fine filtration down to a few microns, plus disinfection through UV light, chlorination, or ozone, often used in combination.

Health authorities recommend boiling harvested rainwater as an added safety step where treatment systems are basic. Regular water testing is essential if a system is intended to supply drinking water, since contamination can occur even in a well-designed setup, and cisterns should also be checked periodically to prevent mosquito breeding.

Recent engineering research has gone a step further, developing integrated rainwater harvesting units that combine collection with on-site disinfection and mineral fortification to produce drinking water directly at the household level, with reported economic payback periods of around eight years for such compact potable units.

Maintenance of a Rainwater Harvesting System

A rainwater harvesting system needs simple, regular upkeep to keep working well:

  • Weekly: Clear debris from gutters and the roof surface, especially after storms, and check inlet filters for blockages.
  • Monthly: Check the first-flush diverter, overflow pipe, water level indicator, and any pumps or controls for proper function.
  • Annually: Inspect the storage tank for cracks or sediment buildup, and have backflow preventers tested by a qualified professional if the system connects to mains water.
  • As needed: Replace filter cartridges and UV lamps per the manufacturer’s schedule, particularly for systems used for drinking water, since a UV lamp typically loses effectiveness after about a year.

Storage tanks and pipework typically carry warranties of 15 to 30 years, while pumps last 2 to 10 years depending on use.

Rainwater Harvesting in Pakistan

Pakistan faces serious water stress, and a rainwater harvesting system is increasingly part of the national response, both in cities and in dry rural regions.

In arid zones like the Cholistan Desert, groundwater is often unusable due to salinity, so rainfall is the main source of drinking water for people and livestock. The Pakistan Council of Research in Water Resources (PCRWR) has developed a rainwater harvesting network of 110 specially designed reservoirs spread across 26,000 sq. km of Cholistan, storing around 440 million gallons of water.

Twenty deep tubewells add roughly 1,405 million gallons of annual discharge where groundwater is usable. Together, these measures have significantly cut seasonal migration among nomadic communities searching for water and are estimated to save around Rs. 6 billion a year.

In urban Pakistan, the picture is different but just as urgent. Falling groundwater levels in cities like Lahore, Islamabad, and Rawalpindi have pushed local authorities to act. The Capital Development Authority (CDA) has made rooftop rainwater harvesting mandatory for new buildings in Islamabad under updated building bylaws, aiming to raise groundwater levels and reduce water wastage.

Academic and engineering institutions are also pushing the technology forward locally. A recent civil engineering project at COMSATS University Islamabad’s Wah Campus designed a full rainwater harvesting system using Building Information Modeling (BIM), GIS, and integrated AR/VR technology, drawing on precipitation data from NASA and the Pakistan Meteorological Department, and applying the SCS Curve Number and Rational Method to estimate runoff.

The project paired a designed recharge well and anthracite filtration system with pre- and post-filtration water quality testing, illustrating how modern design tools are now being applied to a very old technology in a Pakistani context.

For homeowners and developers in Pakistan, practical design guidance includes:

  • Combine a storage tank (for reuse in gardening, washing, and flushing) with a recharge well (to support groundwater levels).
  • Always install a first-flush diverter and filter chamber before the water reaches a recharge well, so silt and pollutants do not enter the aquifer.
  • Keep gutters, downpipes, and tanks accessible for regular cleaning and inspection.
  • Plan the system with the architecture and plumbing drawings, not after construction has already started.
  • Size storage and recharge separately for different property types. A 5-marla house, a 1-kanal villa, a farmhouse, and an apartment building all need different catchment and storage strategies.

Harvested rainwater in Pakistani homes is generally safe for gardening, car washing, floor cleaning, and toilet flushing. It should not be used for drinking unless it undergoes proper filtration, disinfection, and water quality testing, in accordance with both PCRWR guidance and international drinking-water standards.

Frequently Asked Questions

Is a rainwater harvesting system worth it for a single home?

Yes. Even a basic setup with a storage tank and filter can meaningfully cut water bills and provide backup supply during shortages, especially in areas with unreliable mains water. Studies show payback periods for residential systems can run longer than for commercial buildings, but the system still pays for itself over its 15โ€“30-year lifespan.

Can I drink harvested rainwater directly?

Not without proper treatment. Rainwater needs filtration and disinfection to meet drinking-water standards, ideally with regular testing. Most households use it for non-potable purposes like gardening, washing, and flushing.

Is rainwater harvesting mandatory in Pakistan?

It is mandatory for new buildings in Islamabad under CDA bylaws. Other cities and housing societies are increasingly encouraging or requiring it as groundwater levels continue to fall, echoing similar mandatory rules already applied in several Indian cities.

What is the difference between a storage tank and a recharge well?

A storage tank holds water for direct reuse. A recharge well, recharge pit, or recharge trench sends filtered surplus water underground to restore the water table. Most well-designed systems use both together.

How long does a rainwater harvesting system last?

With regular maintenance, storage tanks and pipework can last 15 to 30 years. Pumps and filters need more frequent servicing or replacement, typically every 2 to 10 years.

Does a rainwater harvesting system help with climate change?

Yes. International climate bodies, including the IPCC, list rainwater harvesting as a recognised adaptation measure, since it builds drought resilience while also reducing flood risk from heavy rainfall events.

Final Thoughts

A rainwater harvesting system turns a free, renewable resource into real savings and long-term water security. Whether it is a small rooftop setup for a single home, a BIM-designed university project, or a large recharge network across a desert region, the basic principle stays the same: catch the rain, filter it, and use every drop wisely. With water stress rising across Pakistan and beyond, installing a rainwater harvesting system is no longer just an environmental choice. It is a practical and increasingly necessary one.

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CategoriesNews Climate Change Dams Environment Urban Flooding Weather

Flash Floods Cause Widespread Destruction Across Diamer District

GILGIT: Flash floods triggered by heavy rainfall have caused extensive damage across Diamer district, with disaster officials confirming flooding at six locations early Monday.

The floods damaged houses, the Karakoram Highway (KKH), link roads, crops, agricultural land, and public and private property. Flooding was reported in Khanbari, Niyat, Thore, Gaspayan, Gasbala, Bunar and surrounding areas.

In Thore Valley’s Thunraka area, flood debris entered several homes, while standing crops, agricultural land and fruit trees sustained heavy damage. The valley’s main road was washed away at multiple points, completely suspending traffic.

Power transmission lines were also damaged, cutting electricity to Thore Valley and nearby areas. In Chilas’ Niyat area, floodwaters damaged link roads, disrupting transportation for local communities.

In Khanbari, a severe flash flood swept away two houses along with their contents, as well as several livestock. A private company working on the Diamer-Bhasha Dam project reported major losses after floodwaters swept away 13 dumpers, an excavator, a crushing plant and two water tankers, halting construction activities.

Landslides and debris blocked the KKH at Bonar Das, stranding domestic and foreign travellers for several hours. While the highway was later reopened, link roads to remote areas remained blocked, and power supply had not been restored in several affected localities.

Affected residents have called for immediate relief operations, restoration of roads and electricity, and financial assistance for impacted families.

Officials noted that Gilgit-Baltistan is witnessing a sharp rise in climate-linked disasters, including cloudbursts, flash floods, landslides and glacial lake outburst floods (GLOFs), driven by rising temperatures and accelerated glacier melt.

The region, home to roughly 8,400 glaciers and over 4,000 glacial lakes, faces mounting long-term water security risks. Authorities say emergency response arrangements remain in place.

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CategoriesNews Climate Change Dams Deforestation Environment Urban Flooding Weather

CM Punjab Orders Province-Wide Monsoon Emergency Alert, Directs WASA, Rescue 1122 and PDMA on Standby

LAHORE: CM Punjab Maryam Nawaz has placed all provincial line departments on high alert following the onset of the monsoon season, directing commissioners, deputy commissioners and field officers across the province to maintain round-the-clock preparedness and ensure rapid emergency response.

The Chief Minister emphasised that all concerned officers and staff must remain vigilant, stating there would be no tolerance for negligence or irresponsibility during the monsoon period.

Directives were issued to immediately drain rainwater, with continuous monitoring ordered for Water and Sanitation Agency (WASA) operations. The Provincial Disaster Management Authority (PDMA) Control Room and District Emergency Operation Centres have been instructed to remain fully alert across Punjab.

Rescue 1122 and WASA have been directed to keep personnel and machinery on standby, with priority given to swift-water drainage from low-lying areas and identified choke points. Continuous monitoring of stormwater drains and nullahs was also ordered to prevent water stagnation in urban areas.

The Irrigation Department has been instructed to keep teams on high alert to monitor canal water flow, while authorities were directed to ensure all manholes across urban and rural areas remain properly covered.

Additional safety arrangements were ordered at construction sites, alongside special monitoring of dilapidated and structurally vulnerable buildings. The Safe City Authority and Chief Traffic Officer teams have been directed to ensure smooth traffic flow on highways and main roads during periods of rainfall.

Field teams have been instructed to remain fully prepared to support public guidance, traffic management, and the protection of lives and property throughout the monsoon season.

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CategoriesNews Climate Change Weather

NDMA issues weather alert for hailstorms in upper Pakistan

ISLAMABAD: The National Disaster Management Authority (NDMA) issued a formal weather advisory on Friday, warning of widespread rain, strong winds, and thunderstorm activity across the upper regions of Pakistan from March 14 to March 16, 2026.

A westerly wave is expected to approach the northwestern regions on Saturday evening and persist through the early hours of Monday. A second western disturbance is forecast to affect western Pakistan by the night of March 17.

Areas likely to experience significant impact include Gilgit-Baltistan, Azad Jammu and Kashmir, Khyber Pakhtunkhwa, Rawalpindi, Lahore, Sialkot, and parts of Punjab, as well as Zhob, Barkhan, and Chaman in Balochistan. Isolated hailstorm activity is also anticipated during this period.

Daytime temperatures are expected to fall by 3 to 4 degrees Celsius in northern and upper regions. The authority has further warned of an elevated risk of landslides in upper Khyber Pakhtunkhwa, Gilgit-Baltistan, and Azad Jammu and Kashmir.

The NDMA has urged the public to seek shelter in sturdy buildings or vehicles during hailstorms, stay away from windows, and avoid driving under heavy hail due to reduced visibility and slippery road conditions. Tourists have been advised to refrain from non-essential travel to affected areas, while farmers have been directed to take appropriate measures to protect their crops.

The authority has called upon federal ministries, provincial governments, and local administrations to implement precautionary measures to safeguard public safety and minimise property damage during the forecast period.

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CategoriesNews Climate Change Property Real Estate Urban Developments & Planning

CDA Launches Pre-Monsoon Plan to Prevent Urban Flooding in Islamabad

ISLAMABAD: The Capital Development Authority (CDA) has initiated a series of pre-monsoon measures to prevent urban flooding in Islamabad, following the severe flood damage the city experienced last year.

A high-level meeting chaired by CDA Chairman Muhammad Ali Randhawa brought together board members, senior engineers, environmental officials, and representatives of the Islamabad administration to formalize an emergency preparedness strategy ahead of the upcoming monsoon season.

Among the primary decisions taken was the removal of illegal encroachments along nullahs and streams, which have long obstructed the natural flow of water across the capital. Authorities also resolved to map all areas that experienced rainwater accumulation during last year’s flooding, particularly around Saidpur, the Sohan River, and Nullah Korang.

The Capital Emergency Service has been designated as the lead department during the monsoon period. In preparation, the department has already conducted water rescue training for its personnel in collaboration with Chinese experts and the Pakistan Navy. Staff have additionally been trained to respond to flash flooding scenarios. Specialised water rescue teams, each comprising 12 members, have been formed to handle emergencies.

Further measures include the establishment of a dedicated flood control room to facilitate inter-departmental coordination, the identification of low-lying and flood-prone areas across the city, and the deployment of an effective early warning system. Authorities have also been directed to ensure the availability of water pumps and dewatering equipment ahead of both the pre-monsoon and monsoon periods.

CDA Chairman Randhawa emphasised that thorough planning before the arrival of the monsoon season is essential and that pre-emptive measures must be guided by last year’s experience.

Islamabad has been increasingly affected by climate change in recent years, with urban flooding and extreme weather events posing growing challenges to the city’s infrastructure and residents.

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cutting of tree in islamabad
CategoriesClimate Change Deforestation Economy Featured blog News

What Really Happened in Islamabadโ€™s Tree-Cutting Drive?

A special report on the paper mulberry eradication campaign, the public backlash, competing claims of legality, and the long-term climate and economic cost of losing mature urban green cover.

ISLAMABAD: The drive along Shakarparian Road still feels familiar, until it doesnโ€™t. One moment, the route is shaded by Islamabadโ€™s old, settled tree canopy. Next, the green abruptly disappears, replaced by bare earth and freshly turned soil.

Along the roadside, labourers dig shallow pits. Nearby, pine saplings lie waiting for a plantation. A signboard makes its promise in bold letters: โ€œGreener and Healthier Islamabad, Indigenous Tree Plantation.โ€

Yet, it is not the saplings that have captured the publicโ€™s attention; it is what is missing: decades-old, mature trees that once defined the capitalโ€™s identity.

In recent days, the cutting of trees in Islamabad has triggered widespread public anger, forcing explanations from the government, pushing environmental groups into the spotlight, and raising an uncomfortable debate about whether the cityโ€™s green cover is being sacrificed under the banner of public health and development.

LATEST UPDATE: “IHC Halts CDA from Cutting Trees in Islamabad”

On January 15, 2026, the Islamabad High Court directed CDA to immediately stop cutting of trees in Islamabad. The court issued this order after a petition alleging that the tree removal violated environmental laws was filed. The CDA is required to submit a detailed report, and notices were issued to the Pakistan Environmental Protection Agency and the Ministry of Climate Change. The hearing has been adjourned until February 2.

Why This Matters? | Cutting of Trees in Islamabad

cutting of trees in islamabad

Beyond the immediate controversy, the cutting of trees in Islamabad episode lays bare a deeper governance dilemma: how a modern capital balances public health, rapid development, and climate resilience. In urban terms, tree cover is not decoration; it is infrastructure.

It cools neighbourhoods, filters air, prevents soil erosion, buffers floods, and protects water resources. Its removal can have long-lasting economic and climate consequences that outlive any short-term administrative goals.

What Happened and Where? Cutting of Trees in Islamabad

cutting of trees in islamabad

 

Large-scale cutting of trees in Islamabad was reported at several locations in Islamabad, including:

  • Shakarparian National Park
  • H-8 (along a portion of the Islamabad Expressway, where a park is being upgraded)
  • Chak Shahzad (where decades-old trees were cut for the construction of a dual carriageway)

In Shakarparian, citizens claim at least four patches have been cleared, collectively spread over more than 15 acres near Lok Virsa, leaving large stretches resembling open, barren land.

The cutting of trees in Islamabad has remained a hot topic online, with residents sharing images and videos of deforested patches, questioning both the scale of the operation and the intent behind it.

The Official Position: Only Paper Mulberry Was Removed

Paper Mulberry cutting of trees in Islamabad

The governmentโ€™s defence rests on one central claim: that the cutting of trees in Islamabad is not arbitrary, but targeted and legally backed.

Minister for Climate Change and Environmental Coordination Dr Musadiq Malik, speaking on Friday after chairing a meeting on the issue, stated that around 29,000 paper mulberry trees had been removed in Islamabad in line with the Supreme Courtโ€™s orders issued in 2023.

The minister said the directive was implemented again in 2025 to rid the city of what he described as an invasive, non-indigenous, and life-threatening species.

Paper mulberry, the minister claimed, is a major contributor to allergies and can cause fatal complications among chronic asthma patients. He added that the felling plan was finalised after confirming with the Ministry of Health that the species posed a major health concern.

โ€œWe are not planting non-indigenous species,โ€ he said, adding that every tree chopped would be replaced at a ratio of one cut tree to three new saplings/trees.

The Capital Development Authority (CDA) also maintains that in Shakarparian, only paper mulberry trees were chopped down.

What the Numbers Say? | Cutting of Trees in Islamabad

According to CDAโ€™s DG Environment Irfan Khan Niazi, the operation has proceeded under court directions with close supervision by CDA staff and documentation from cutting of trees in Islamabad to loading.

He stated:

  • approximately 12,000 paper mulberry trees were removed from F-9 Park
  • 8,700 were cut in Shakarparian
  • Additional locations, including H-8, were also included

In total, the CDAย reports thatย 29,115 paper mulberry trees have been removed to date.

The Publicโ€™s Concern: โ€˜This Was Not Only Paper Mulberryโ€™

cutting of trees in islamabad

Despite official assurances, residents insist the reality on the ground looks far broader than a targeted health operation.

In Shakarparian, citizens stated that besides paper mulberry, other trees also appeared to have been cut down, and that large swathes of tree cover were cleared in a manner inconsistent with a selective removal drive.

For many, the question is not merely โ€œwhy was paper mulberry removed?โ€ but:

  • Why was the removal so abrupt?
  • Why did it involve such large patches of cleared land?
  • and whether decades-old green cover can truly be replaced by saplings in any meaningful timeframe?

Development Projects: The Road and Housing Link | Cutting of Trees in Islamabad

In Chak Shahzad, cutting of trees in Islamabad was carried out for the construction of a dual carriageway intended to connect to a CDA-DHA-owned housing scheme from Park Road, linking the controversy directly to Islamabadโ€™s real-estate expansion and infrastructure development model.

Cutting of trees in Islamabad, H8, took place where a park is being upgraded alongside the Expressway.

This intersection, between ecological removal drives and physical development projects, has strengthened public suspicion that cutting of trees in Islamabad may not be purely a health-driven intervention.

The WWF Report and the โ€˜Bigger Realityโ€™

WWF-Pakistan report on cutting of trees in islamabad

Environmental groups argue that the issue is more complex than official explanations.

A WWF-Pakistan report criticised the recent removals and land clearing in Islamabad, stating that while the paper mulberry eradication drive is a major factor, extensive vegetation loss also stems from unchecked infrastructure development.

Field inspections conducted from December 2025 to January 2026 reportedly found large-scale clearing along:

  • H-8 Islamabad Expressway
  • Margalla Enclave Link Road
  • Shakarparian

The report raised concerns over:

  • lack of transparency
  • weak site-specific planning
  • monitoring gaps
  • incomplete restoration and exposed soil

Experts Warn: Itโ€™s Not Just Trees, Itโ€™s the Cityโ€™s Climate System

Experts caution that even if paper mulberry removal is justified, the method matters.

Climate policy advocate Dr Zainab Naeem said the issue was not the removal itself but the alleged mismanagement, warning that the court-mandated phased approach, ecological assessment and prior afforestation steps appear to have been ignored. She stated native species such as shisham were reportedly also cut, as highlighted in WWFโ€™s findings.

She described the move as climate misgovernance, warning that Islamabad is already developing an urban heat island effect due to concretisation and declining green buffers.

Water resources expert Dr Hassan Abbas warned that large-scale deforestation threatens:

  • groundwater recharge
  • temperature regulation
  • rainfall balance
  • ecological stability

He stressed that even public-health-driven removal must follow proper mechanisms, because replacing trees with concrete accelerates heating, disrupts rainfall patterns, and accelerates degradation.

The Economic Cost Behind the Environmental Cost | Cutting of Trees in Islamabad

cutting trees in islamabad

Beyond ecology, the cutting of trees in Islamabad canopy plays a direct economic role.

Urban analysts note that the loss of mature trees can lead to:

  • Higher electricity demand (cooling loads increase with higher temperatures)
  • Higher public health spending due to heat stress, dust, and air quality decline
  • increased stormwater runoff and greater risk of flooding, raising infrastructure repair costs
  • weaker livability, reducing quality-of-life indicators that sustain long-term urban value

In effect, while development projects may generate short-term economic activity through construction, poorly managed loss of ecological buffers can create long-term liabilities that quietly burden households and government alike.

Accountability Questions: What Was Approved, and Who Monitored?

The controversy has also revived core governance questions, especially in the context of environmental permissions:

  • Were site-specific ecological plans made public?
  • Were environmental assessments and approvals properly disclosed?
  • What independent monitoring existed beyond agency statements?
  • How was โ€œonly paper mulberryโ€ verified on the ground?
  • Were permissions and licensing processes fully compliant?

Dr Malik directed that a transparent mechanism be developed to ensure compliance with laws, rules and procedures related to such campaigns, an indication that the current process may lack public confidence.

Notably, while official handouts discussed cutting in multiple sectors, they reportedly did not mention cutting of trees in Islamabad along Park Road in Chak Shahzad, raising further questions about disclosure.

CDAโ€™s Plantation Response: A January Drive Amid Frost

Amid criticism, the CDA launched a plantation campaign in January, a month usually associated with frost and not traditionally viewed as ideal for mass plantation.

Historically, CDA plantation drives typically began around mid-February. This time, the plantation began over a month early in the Shakarparian area.

CDA officials defended the timing by stating that only suitable species, including Chir Pine, were being planted and that the drive aims to plant 30,000 trees, with greater momentum expected next month.

However, critics questioned whether the plantation effort was ecological restoration or merely damage control.

PM Takes Notice

After sustained pressure from citizens and civil society, Prime Minister Shehbaz Sharif took notice of the alleged cutting of trees in Islamabad and sought a report from the CDA.

The governmentโ€™s response suggests recognition that public anger has moved beyond social media outrage into a politically sensitive urban governance issue.

The Bigger Debate: Health, Development and a Cityโ€™s Identity

Islamabadโ€™s paper mulberry dilemma is not a simple question of trees versus health. It is a debate about trust, transparency and what kind of capital Pakistan wants to build: one shaped by ecological planning, or one repeatedly โ€œfixedโ€ after irreversible damage.

So the question that arises here is: was this drastic approach truly necessary, or could public health have been protected without stripping the capital bare?

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CategoriesClimate Change News

Flood-hit Pakistani farmers to sue German energy and cement giants for climate damage

ISLAMABAD: A group of 43 farmers from Pakistanโ€™s Sindh province has initiated legal action against two German companies, RWE and Heidelberg Materials, alleging that their greenhouse gas emissions contributed to the catastrophic floods that struck Pakistan in 2022.

Lawyers representing the farmers have sent formal letters before action to the two firms, signaling their intention to file lawsuits in December if the companies do not acknowledge liability or agree to compensation. The farmers estimate their total damages at about โ‚ฌ1 million after losing two rice and wheat harvests when their land remained submerged for over a year.

According to the Global Climate Risk Index, Pakistan was the country most affected by extreme weather events in 2022, when monsoon rains flooded one-third of the country, killing at least 1,700 people, displacing 33 million, and causing economic losses estimated at $30 billion.

Figures from the Climate Accountability Institute attribute 0.68% of global industrial greenhouse gas emissions since 1965 to RWE and 0.12% to Heidelberg Materials. RWE said it could not comment beyond what had appeared in the media, while Heidelberg confirmed receiving a legal letter and said it was reviewing the matter.

The case forms part of a growing wave of international climate litigation, following recent actions in Europe and Asia against major emitters. It follows a previous case brought against RWE by a Peruvian farmer, in which a German court ruled that companies could, in principle, be held liable for climate-related damages, though that claim was ultimately dismissed.

The Pakistani farmersโ€™ legal team plans to present studies linking human-induced climate change to the 2022 floods. The action is supported by the European Center for Constitutional and Human Rights, which is also backing a similar case against Swiss cement company Holcim. If the firms do not respond, the case is expected to be filed in Germany in December.