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How to gamble with floods

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by Eng. Mahinda Panapitiya and

Eng. Wasantha Lal (PhD)

(Two residents from Attanagalu Oya Basin)

Introduction

Flooding during heavy rains and water pollution during normal time in natural streams is a common problem all over the world when human settlements are located near flood prone areas. For example, about 7-10% land area, in the US, under human settlements, are prone to flooding. In ancient cultures, flooding was perceived as a blessing in disguise because it was the main transportation method of fertilisers, free of charge, for agriculture activities in temporary submergence areas called flood plains. After moving people into flood plains because of shortage of space for settlement, floods have become a curse for humans. Deciding to settle down in flood prone area is a gamble. However, there are modern technologies called flood modelling available for us to overcome this problem.

 

Flood Modelling

For an example, it is now possible to simulate different flood conditions that may arise due to heavy rains, before it actually occurs, using satellite and survey data. This is called “modelling” in engineering. Any area prone to floods can be modelled and divided into zones so that land users will know in advance how deep their lands will get submerged. This type of performance-based methods also evaluates how an existing or newly introduced flood mitigation effort, performs under different flooding events.

Hidden reasons behind frequent flooding and water pollution of natural streams

* Unplanned real estate development by clearing local tree cover resulting in impervious areas (roofs, carpeted roads, etc.,) prevents water infiltrating the soil. This increases the runoff rate, causing flash floods during heavy rains. On the other hand, during droughts, all the natural tributary streams and wells in those areas dry up soon after the rain. This is very common in basin such as the Attanagalu Oya.

* The obstruction of natural stream and their tributaries due to poor maintenance. This is very common along the Kelani River basin

* Illicit encroachment causes the filling of wetlands in the flood plains. As a result, rain water has no designated place to collect before flowing out gradually. Most of the floods in Gampaha, Ja-ela and Wattala are due to this issue.

* Deposition of sediments washed down from upland areas due to lack of tree cover and also the erosion of stream banks whose reservations are encroached on either for agriculture in rural areas or for settlement in urban areas

* Inadequate flow capacity in local streams due to invasive weed growth associated with polluted water and lack of riparian tree cover. (Wattala)

* Lack of awareness among officials who manage water resources in natural streams about the role of riverine environments in flood plains which act as kidneys in our ecosystem while preventing flash floods.

 

How the community could face these challenges

Those who are already living in flood-prone areas or are planning to do so should be aware of the different risk levels in the areas concerned. For that, there is a need to do an exercise called Flood Hazard Zoning, This approach is very common in the developed world. This exercise will also enhance the community participation for government intervention such as canal cleaning and discouraging further encroachment on flood plains by land fillings.

 

Available Technologies

A sketch above extracted from a technical guideline adapted in the US shows a typical flood zoning map, which could be used by a community to decide whether they should or should not build houses in a particular location.

 

For example, in this map, people who are in Zone A are in a high-risk area subject to flooding. Zone C is a low risk area. A person who wants to build a house in Zone A, which is designated as “100 Year Flood Zone”, will have a 26% chance his house being submerged once in 30 years, which is the normal bank lending period of a housing loan. For the next 70 years, which is the normal lifetime of a building, the chance of being flooded is 50%. For a person who wants to build a house in Zone B designated as “500 Year Flood Zone” will have 18% chance of his residence being submerged once in 70 years. By knowing in advance through these flood zoning maps, people themselves become aware of flood danger before it occurs and, therefore, they prepare themselves for the challenges during flood situations. When there is no such initial warnings, governments will have to bear the whole responsibility.

This type of mapping would also be a useful guide for land valuation as well as for insurances against flood risks. With flood zoning, flood insurance becomes an option that adds a financial component in designing buildings to address those future risks. For example, people can build their houses at elevated levels on columns to suit predicted flood levels. Also the sewerage systems can be introduced to suit the wetland environments.

 

Lessons from the US

Every state in the US is required by law (water policy) to demonstrate that (a) the public is protected from floods; (b) the public has sufficient water available for drinking and farmin, etc. (d) there is enough water to support the environment. Computer models simulating the year-round hydrology are used for the purpose. Those models show how water from the rains could be saved for use during the dry season. Government agencies in the US do not use the models currently in use in Sri Lanka. They have developed their own models to simulate flooding. Models used in Sri Lanka are bought primarily from two European countries. They are normally used only to study individual flood events. The fundamental ideas used in these models have not changed since 1980s in Sri Lanka, and these models are still sold primarily to developing countries like Sri Lanka. On the other hand, teams of senior engineers are employed for developing those models used in the US, before permits are issued for new development projects. There are also Sri Lankans engineers among those teams in the US, as primary developers.

 

Opposite of flood

Wetlands of flood plain are the interface between aquatic and terrestrial areas. Plants in those wetlands play a very vital role in cleaning water biologically before it falls into the main streams. Wetlands are in fact the kidneys of ecosystems. Over the years, due to the so-called development, the environmental features of flood plains have undergone changes, causing not only floods during heavy rains but also malfunctioning natural water cleaning process, especially during droughts.

Note that those new technologies address not only flood situations but also help face drought situations, too, by identifying areas suitable for temporary water storages within flood plains. For example, during a previous drought situation there was a water shortage in the Attanagalu Oya basin, and the people had to purchase water from trucks, though annually the Oya releases into the sea a volume of water equal to that of the Parakrama Samudraya! Severe drought situations are even worse than floods, especially in view of the current pollution levels of natural streams bordering urban areas. To address this issue also, technologies could be used to identify naturally available water cleaning wetlands to be preserved.

King Parakramabahu’s famous quote about water conservation and utilization—“Do not release even a drop of rain water to the sea without using”—applies not only to our dry zone but also to the west zone.



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‘The devil is in the details’ in West Asian peace

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President Donald Trump at the current G7 summit in France. Evelyn Hockstein/Getty Image

It is obviously too early for an outpouring of joy over the seeming cessation of hostilities between the main antagonists in West Asia. While the prospect of there being a measure of calm in the region is being welcomed by considerable sections of the international community, what is ‘on the table’ currently is only a Memorandum of Understanding between the US and Iran to give peace a chance. The hard part in the peace effort remains to be achieved.

In the Middle East of today we have one of the most complex conflicts to break out in modern international politics and the observer would be naive in the extreme to expect a facile and early closure to the tangle. Yet, for the sake of the world’s publics who have been hurting badly in the prolonged hostilities one could only hope that the US-Iran MoU that is expected to be signed by the sides on Friday would lead eventually to a substantive peace. The world’s thanks are due to Pakistan in this connection for its sustained support in the peace drive.

While the sides have agreed to a ceasing of hostilities in the most general terms and have reached accord on the facilitation of uninterrupted oil and gas supplies to the rest of the world, for instance, the ‘devil will prove to be in the details’ in an envisaged comprehensive peace settlement. It is these details that would make or break peace if the negotiations go on in earnest.

Nevertheless, the details would need to be worked out consensually in a spirit of compromise with an eye to the greater good of the world community. Realpolitik or a narrow focus on solely the national interest among the protagonists, for example, would need to give way to a measure of humanity that would encompass within it a consideration of the overall well being of the world. In other words, it is statesmanship that would crucially matter.

The next few weeks would establish whether humanists are ‘asking for far too much’ when they broach the questions at issue in these terms. Yet it is essentially self interest and national security considerations of the first importance that drove the conflict from even prior to February this year and these questions would need to be taken up and resolved to the satisfaction of the US and Iran in the main if some headway is to be made towards a durable settlement.

The nuclear issue would prove to be the proverbial Gordian Knot. From a realistic viewpoint, Iran could not be expected to be without a potential nuclear deterrent in the face of perceived nuclear threats emanating for it from the West and Israel. In the short term, Iran would need to possess this deterrent to a measure, within a mutually agreed international legal framework maybe, until wide agreement is reached on the nuclear tangle. Specifically, Iran’s immediate threat perceptions with regard to her nuclear-powered rivals would need to be defused during initial negotiations.

Ideally it is a world free of nuclear weapons that must be aimed at but since this goal cannot be achieved in the near or medium terms, unfolding negotiations would need to ensure Iran’s absolute security in a world of powers that continue to swear by the nuclear deterrent, if it is to give up the suspected latter capability.

However, it is to the degree to which the present nuclear powers divest themselves of this capability that Iran could be put at ease on this score. Accordingly, it is nothing short of a complete elimination of nuclear weapons from the world that could dissuade keenly security conscious states from developing nuclear weapons of their own with a mass destruction capability.

This is the number one dilemma the international community needs to grapple with going forward and it is to the extent to which it resolves it that a nuclear weapons free world could be envisaged. No doubt, an uphill challenge.

Compelling Israel to support the present negotiatory process constitutes another grueling challenge for the US. Currently the Iranian position essentially is that a Middle East peace is inseparable from a normalization of the security situation in Lebanon. That is, the present Israeli attacks on the Hezbollah presence in Lebanon must cease if a comprehensive peace is to be realized in West Asia.

However, Israel is showing no signs of drawing back from its attacks on Hezbollah strongholds in Lebanon since the security of the Israeli state is being seen as threatened by the militant group. Co-opting Israel into the negotiatory effort therefore would turn out to be a matter of paramount concern for the US.

Moreover, elements in the rightist administration in Israel are seeing the current peace efforts as a ‘sell out’ to the enemies of Israel. They would have none of it. It is left to be seen how the US would be managing these virtual storm centres in the diplomatic process that could very well bring down the overall purported peace drive.

A recent pronouncement by US Vice President J.D. Vance points to yet another problem area in the US’ current peace overtures. He said that, ‘Regional peace and stability includes stopping the funding of terrorist organizations.’ He was obviously referring to the support extended by Iran to Hezbollah when he mentioned ‘terrorist organizations’ but he has given fresh life to the age-old conundrum of ‘Who is a terrorist?’ by these words.

To the Netanyahu government the Hezbollah and other militant organizations fighting Israel are ‘terrorists’ but from the viewpoint of the Iranian regime they are ‘freedom fighters’. This seemingly insurmountable definitional issue would not only stubbornly bedevil the peace effort but could even figure in bringing about its collapse, unless judiciously handled.

Thus, it’s the thorny details that need to be watched to keep the West Asian peace process afloat, once it gets going in earnest. There is no doubt that US President Trump would be receiving a considerable amount of support from the G7 in this historic peace undertaking and his personal appeals to the grouping currently meeting in France for continuous support are likely to elicit a positive response from it.

Likewise, Trump would need to appeal to also the BRICS countries if almost total global support is to be garnered for the peace drive in West Asia. BRICS’ solidarity with the US and the West is likely to carry considerable weight with Iran and other Eastern actors who are key to a sustained peace drive in the Middle East.

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Sri Lanka’s elephant paradox: Govt. counts tourism dollars while playing a dangerous numbers game: Expert

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At a time when Sri Lanka is enjoying a resurgence in wildlife tourism, with elephants remaining the undisputed stars of the country’s national parks and one of its most marketable natural assets, elephant conservationist Supun Lahiru Prakash has sounded a stark warning: the nation is in danger of losing the very species that helps attract millions of tourism dollars while sustaining some of the island’s most important ecosystems.

Supun says repeated claims by authorities that Sri Lanka’s elephant population is increasing, despite the absence of a final survey report and amid continuing elephant deaths, risk creating a misleading narrative that could undermine conservation efforts and encourage retaliation against elephants.

According to Supun, the issue is not merely about numbers. It is about political priorities, scientific credibility and the future of one of Sri Lanka’s most iconic species.

“Repeatedly claiming that the elephant population is increasing appears to be an attempt to hide the Government’s inability to manage the rising annual elephant death rate and the complications of human-elephant conflict,” Supun said.

For decades, the Sri Lankan elephant has been a symbol of the country’s rich natural heritage. It is the centrepiece of wildlife tourism, drawing visitors from across the globe to national parks such as Yala, Udawalawe, Minneriya, Kaudulla and Wilpattu. International wildlife documentaries, tourism campaigns and social media promotions frequently place elephants at the heart of Sri Lanka’s nature tourism brand.

Yet, according to Supun, the country’s conservation policies do not reflect the value of the species.

“On one hand, the Government is enjoying increasing tourism revenue, and elephants remain one of Sri Lanka’s most important wildlife attractions. On the other hand, narratives are being promoted that could encourage retaliation against the very species that contributes significantly to the country’s tourism industry,” Supun said.

According to the First Countrywide National Survey of Elephants conducted in 2011, Sri Lanka had 5,879 elephants. However, official statistics show that 4,167 elephants died between 2012 and 2024.

Supun stressed that these figures represent only the deaths officially recorded by the Department of Wildlife Conservation.

“In a context where more than 70 percent of the country’s elephant population reported in 2011 has died within 13 years, it is difficult to accept claims that the population has increased,” Supun said.

The conservationist pointed out that elephants have the longest gestation period among land mammals and that scientific studies have reported increasing interbirth intervals among female elephants together with high calf mortality.

“When such biological realities are taken into consideration, claims of a dramatic increase in elephant numbers become difficult to understand,” Supun said.

Supun believes that repeated references to increasing elephant populations risk fuelling public hostility towards elephants, particularly among farming communities already affected by crop raids and property damage.

“Such claims can create the impression that elephant populations are exploding and thereby promote retaliation against elephants as well,” Supun said.

According to Supun, Sri Lanka’s elephant crisis cannot be understood solely through population estimates. The real issue lies in the country’s failure to address human-elephant conflict through long-term, science-based solutions.

Sri Lanka continues to record among the highest levels of human-elephant conflict in the world. Every year, hundreds of elephants and dozens of people lose their lives as competition for land and resources intensifies.

Despite the scale of the crisis, Supun says authorities continue to rely on strategies that have repeatedly failed.

Lahiru Prakash

These include driving elephants into protected areas, strengthening electric fences to confine them there and allocating additional manpower to maintain fencing systems.

Supun was also critical of several proposals that emerged from district-level discussions on conflict mitigation, including the sowing of paddy and corn using Air Force drones and the planting of fruit orchards within protected areas.

“Such proposals fail to address the real ecological and social dimensions of the conflict,” Supun said.

While welcoming reports that the Government intends appointing a national-level mechanism to tackle human-elephant conflict, Supun said the challenge required intervention at the highest level of government.

“Given the gravity, complexity and geographical spread of human-elephant conflict, appointing any committee other than a Presidential Task Force is not useful,” Supun said.

He argued that a Presidential Task Force chaired by either the President or the Secretary to the President would be better positioned to overcome the bureaucratic delays and institutional fragmentation that have hindered previous efforts.

Supun also stressed the urgent need to restore and protect elephant corridors and home ranges that allow elephants to move safely across landscapes.

He cited the Koholankala elephant corridor in Hambantota as one example where removing obstacles could help reduce conflict while improving habitat connectivity.

At the same time, Supun questioned policies that permit the allocation of forest lands in areas identified by environmental assessments as crucial elephant ranges and movement corridors.

“The opening of elephant corridors and the protection of elephant home ranges must be carried out scientifically and consistently if they are to succeed,” Supun said.

Beyond tourism, Supun emphasised the ecological importance of elephants.

“Elephants are ecosystem engineers. Through their feeding habits and movements, they help maintain habitats that support numerous other species. In many ways, they create safer and healthier environments for wildlife,” Supun said.

According to Supun, protecting elephants means protecting entire ecosystems and the biodiversity upon which Sri Lanka’s wildlife tourism industry depends.

“By protecting elephants, we are also protecting the biodiversity that makes Sri Lanka one of the world’s premier wildlife tourism destinations,” Supun said.

As Sri Lanka seeks to expand tourism earnings and strengthen its reputation as a wildlife destination, Supun believes the country faces a defining choice: continue with policies that have failed to stem elephant deaths and human-elephant conflict, or embrace a science-based conservation strategy that safeguards both people and wildlife.

Without a fundamental shift in policy and political will, Supun warned, Sri Lanka risks losing not only one of its most iconic species but also the ecological and economic benefits that elephants continue to provide.

“The suffering of both farmers and elephants will only intensify unless meaningful action replaces rhetoric,” Supun said.

 

By Ifham Nizam

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Top Model of the World 2026

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Back-to-back victory for Colombia

Katherine Castaño of Colombia claimed the Top Model of the World 2026 crown, securing a historic back-to-back victory for her country. Angelica Sanchez of Puerto Rico was named first runner-up, and Eunice Deza of the Philippines finished as second runner-up.

Katherine was crowned by outgoing titleholder Natalia Garizabal Vera of Colombia.

Several special category awards, and subsidiary titles, were also presented during the Top Model of the World 2026 pageant.

These awards recognised excellence in modelling, peer support, and regional representation.

Primary Subsidiary Titles

Sri Lanka’s Netalie Withanage: Top 16 at
the grand finale

Miss Globe 2026: Valentina Tabares (Ecuador) — Awarded to the contestant who perfectly balances fashion modelling with traditional beauty queen qualities.

Queen of Europe 2026: Mia Danielle Williams (United Kingdom) — Given to the highest-ranking candidate from a European nation.

Special Awards Recognition

Audience Iconic Award: Charly (Dominican Republic) — Won via the official public online vote, granting her a fast-track direct entry into the Top 6.

Exotic Model of the World: Angel Emeka (Nigeria) — Awarded for exceptional editorial presence and strong runway performance.

Best Body Award: Thailand — Voted directly by fellow contestants at the Flow Spectrum Hotel. The highest-ranking runners-up for this category included Zambia, South Africa, Colombia, and Ghana.

Angelica Sanchez (Puerto Rico): 1st Runner-up

Final Placement

Winner: Katherine Castaño (Colombia)

1st Runner-Up: Angelica Sanchez (Puerto Rico)

2nd Runner-Up: Eunice Deza (Philippines)

Top 6 Finalists: Included contestants from the Dominican Republic, Romania, and Germany.

The pageant, known for focusing on professional modelling careers over just beauty, brought together 36 models from around the globe for two weeks of runway, photoshoots, and cultural events.

Sri Lanka’s Netalie Withanage walked among 36 of the world’s best and powered her way into the Top 16 at the grand finale.

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