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Intensive sand mining puts river systems in peril

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By Eng. Thushara Dissanayake

sand is an essential aggregate material used for construction work. After 2004, Sri Lanka experienced a boom in the construction industry due to rehabilitation the tsunami-hit infrastructure in the country, creating a huge demand for sand. Even later, demand increased exponentially in tune with the expansion of construction activities such as roads, condominiums, and other mega projects during the post-war period.

While there appears to be no dearth of sand, not all sands are suitable for construction work as the properties of the sand matters a lot to maintain the accepted standards. Sand should be clean, devoid of problematic chemicals, and conform to required sizing to be used in construction activities.

In Sri Lanka, sand is mainly obtained from river beds. Being a readily available raw material, it requires no processing at all, in most cases. However, it is now well obvious that continued and indiscriminate sand mining has caused irreparable damage to the ecological and physical environments of our river systems. The Kelani Ganga, the Kalu Ganga, the Deduru Oya, and the Maha Oya have suffered the worst damage.

Attention paid to the issue of overexploitation of river sand seems to be inadequate at present. As a result, rivers have been adversely affected, and this has led to many physical, ecological, and socio-environmental impacts. River bed and bank erosion often damaging riverine structures, loss of biodiversity, lowering of groundwater table and water pollution are some of severe impacts caused by indiscriminate sand mining.

 

Sand budget

The main impact of sand mining is the altering of the sediment budget of the river. Besides, it affects the river hydraulics. The geological replenishment process takes a considerable time period.

Meanwhile, many reservoirs were constructed in our river basins in the recent past. This has further aggravated the situation. These reservoirs limit downstream sand availability as sand is trapped in the reservoirs as sediments.

 

Physical Impacts

Large-scale river bed lowering due to sand mining can increase bank height and aggravate bank collapse due to undercutting. This scenario endangers adjacent lands and structures. Further, lowered main stream bed triggers tributary stream bed erosion. Thus, lowering of riverbed sometimes goes beyond the sea level as in the case of the stretch of the Kelani Ganga beyond Hanwella. As a result, drinking water intakes, located in rivers close to the sea mouth, are affected by saline water intrusion into freshwater. The Ambatale water intake in Kelani Ganga is an example and sophisticated remedial works are imperative for controlling the salinity issue.

 

Groundwater

Lowering of riverbed due to sand mining drops the river water level as well. Eventually, the water table in the adjacent land area also goes down. This is a serious problem for groundwater users as the water level of their domestic wells falls in parallel with the water level of the river. Low groundwater levels can also affect vegetation in floodplains and adjacent wetlands, which are important components of riverine ecology.

 

Stability of structures

When sand mining is done at a certain location the river bed erosion tends to migrate upstream to cover up the supply deficiency. During high flows, the bed erosion extends to downstream as well. Thus, the erosion of bed and banks is not limited to the area of mining but affects a considerable distance to the upstream and downstream of the river. This scenario adversely affects most of the riverine structures, especially bridges. A classic example is the Badalagama Bridge across the Ma Oya; its foundation is exposed (see picture). During the recent floods, one abutment collapsed.

 

Flora and fauna

From an ecosystem perspective, sand is an important abiotic component, which provides habitat for many aquatic animals. Riparian and instream vegetation are integral components of the river ecosystems. Further, the woody debris in aquatic ecosystems is an important habitat and spawning site for many aquatic animals. The dragonfly preys on mosquitoes. Hence, it is a beneficial insect as far as the present dengue menace in the country is concerned. Nevertheless, the sand extraction process destroys dragonfly nymphs before they emerge from riverine habitats in adult form.

 

Flooding

With the lowering of river bed, river water levels go down reducing overbank flooding during high flows. This in turn reduces the supply of rich organic matter to flood plain wetlands. In addition, it aggravates downstream flooding, as water storage in the floodplain is limited.

 

Water quality

The content of suspended particles in the water column rises as a result of sand mining operations.

The high concentration of suspended particles in water blocks the respiratory system of fishes and other aquatic species endangering their lives. Similarly, it affects respiration and photosynthesis of instream flora, and they, in turn, lead to reduced growth rate and finally its total destruction. When the river water is used for drinking, additional purification efforts have to be made to remove the turbidity.

 

Coastal erosion

The conveyance of sand to the shoreline by the rivers is also very important. The sand deposited at the shoreline is gradually moved along the coast by waves and it is a nourishment for beaches. When the sediment supply to the coastal environments decreases, undernourished beaches suffer erosion. Some areas in the eastern coastal zone of the country survived the Tsunami in 2004 due to such sand dunes.

 

Present regulations on sand mining

River sand mining is a lucrative business activity in the country. However, it is reported that almost one-third of the total sand supply to the country is from illegal sources. According to Mines and Minerals Act No. 33 (1992) of Sri Lanka sand is a property of the state and a permit is required to mine and transport. The Geological Surveys and Mines Bureau (GSMB) is responsible for identifying locations and quantities of available sand deposits. Further, this mining and transportation process should be in line with the National Environmental Act and laws and regulations of other relevant line agencies. Unfortunately, illegal sand mining taking place at a massive scale is yet to be controlled effectively.

 

Alternative sources for sand

Restricting sand mining from riverbeds due to aforesaid environmental issues will adversely affect the construction industry as the present supply is hardly enough to meet the ever-increasing demand. Therefore, it is very important to focus on alternative sources.

Land-sand and manufactured sand are the best alternatives to river sand. It is the sand extracted from earth containing a higher percentage of sand by washing. Manufactured sand is obtained mainly by recycling demolished building material and by crushing rock. However, the degree to which manufactured sand can replace natural sand depends on the quality of processing and cost. Appropriate policies are to be developed for promoting these alternative sand sources.

We have thousands of ancient irrigation tanks throughout the country. Most have been silted to a considerable level limiting their water storage capacity. Often, desilting of these tanks is not promoted owing to high cost. In many tanks, the deposited materials are rich in sand. These silt deposits can be excavated and used as a source of sand under appropriate environmental regulations. Thereby, it is possible to increase the water storage capacity of these tanks as well.

Off-shore sand is another alternative source for sand though not suitable for immediate use due to high salinity. In order to prevent environmental damage to the coastal zone, sand has to be pumped from a distance of about 10 km from the shore. This sand can be used for construction works after removing the salt content. Still, artificial methods of washing out are costly. As a natural method, sand can be exposed to rain for a period of six months and this is sufficient to make it usable, according to studies carried out by the Moratuwa University.

 

Sand conservation as an option

Conservation is another important strategy to limit sand demand. Following actions are beneficial to minimise sand requirements and promote its optimal utilisation.

= Use river sand as a raw material only for construction works and not for landfilling or similar land improvement activities

=Adaptation of new construction technologies that minimise the use of sand

=Quantification of river sand replenishment rates and issuing mining permits accordingly.

It has to be taken into account that the global construction industry is set to grow by more than 70% by 2025, and contribution from our country to it will not be much less than that.

(The writer is a Chartered Engineer

specialized in water resources with over 20 years experience)



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Features

The challenge of being positive about SAARC

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The RCSS forum addressed by SAARC Secretary General Ambassador Md. Golam Sarwar in progress. (Pic courtesy RCSS)

It was a few years back that a former President of Sri Lanka took it on himself to pronounce SAARC ‘dead’. Since then there have been other sections of Sri Lankan opinion that have joined the critics of SAARC and taken the solemn stance that SAARC has indeed died what may be called a natural death.

Their fatalism is understandable. SAARC has failed to meet at heads of government or state level for the past several years to take the SAARC process notably forward. Regional cooperation has more or less been only an appealing idea. No substantive concrete projects have taken off to make the idea a hard reality. ‘Inner paralysis’ seems to be SAARC’s lot. Hence the fatalism in these circles.

However, being one of the worst cash-strapped regions of the world and a teemingly populated one with people virtually left to their devices, what choices do the ‘SAARC Eight’ have other than to try their best to band together and continue with their cooperation efforts, however small they may be?

There is no escaping the mounting debt trap for many of these countries and bankrupt Sri Lanka is a glaring example, but ‘throwing in the towel’ and abandoning themselves entirely to the diktats of the strongest economies and their agencies will prove a ‘living death’ for many countries in the SAARC fold.

The gains may be meagre but giving-up on SAARC cooperation in full would prove self-defeating for the organization and South Asia. Right now, the collective intention ought to be to salvage what the region could from the tenuous cooperative efforts. Moreover, such initiatives could go some distance to generate a degree of goodwill among the Eight and help in sustaining a dialogue process.

Given this backdrop it proved ‘a stich in time’ for the Regional Centre for Strategic Studies (RCSS), Colombo, to recently host the SAARC Secretary General Ambassador Md. Golam Sarwar to a round table discussion on the unifying potential of SAARC and its future possibilities, besides other related issue areas.

Held on June 24th and moderated by RCSS Executive Director and former ambassador Ravinatha Aryasinha, the forum brought together a vibrant, wide ranging audience comprising academicians, diplomats, senior public servants, civil society activists and many others. Following the presentation by Ambassador Golam Sarwar titled, ‘Reigniting SAARC: Achievements, Challenges and the Way Ahead’, a lively Q&A followed.

The above forum could be described as an act of lighting the proverbial ‘candle’ rather than ‘cursing the darkness.’ It surely is a ‘darkness’ that could be seen as daunting considering that the region’s pivotal powers, India and Pakistan, are failing to act in a spirit of accord but are engaged in bitter finger-pointing on a number of questions of vital importance to SAARC.

On the other hand, what is the rest of the region doing to bring the above sides together? It is disappointing that to date the rest of SAARC has failed to launch a major diplomatic drive to bring peace between the feuding regional heavyweights. It needs to act without delay and establish its earnestness and this effort would need to prove SAARC’s staying power in the unfolding months and even years.

In assessing SAARC’s seeming failure local opinion in particular has failed to factor in what could be described as weak leadership. Since Sheikh Mujibur Rahman of Bangladesh, the founding father of SAARC, the region has failed to produce a visionary leader who could advance the SAARC cause with charisma and drive.

Among other reasons, weak leadership accounts considerably for the faltering and stuttering status, as it were, of SAARC. Badly needed are leaders who could go the extra mile, think less of narrow national interests and work diligently towards the collective well being of the region but SAARC’s millions of ordinary people have been made to wait in vain for leaders of such stature. Instead, they have been burdened with politicians who seem to be relishing the apparently moribund state of SAARC.

Looking back, it could be said that it was the dynamic leadership factor that led to the launching of the Non-Aligned Movement and for its sustenance for a few decades. True, it could be seen in some quarters that NAM is no more, but as in the case of SAARC, the former too has been unfortunate to be burdened over the years with politicians who lack the vision and drive to unflaggingly advance the fortunes of the South. NAM and SAARC lack the dynamism and vision of leaders of the stature of Jawaharlal Nehru, for example, to give them the required guidance and intellectual depth.

The reasons are complex for there not being among us currently political leaders with the vision and the steadfast commitment to advance the legitimate interests of the South. However, it could be stated with conviction that the majority of Southern leaders have too easily caved in to the demands of the global North and its financial agencies.

These leaders have failed to see, for instance, that the largely market economy oriented Northern governments would not view with favour a centrist economic model that attaches priority to the interests of the dis-empowered publics of the South. This realization ought to have dawned on the current government in Sri Lanka, for instance, some while ago but it has no choice but to abide by IMF dictates since economic survival at present is unthinkable without the latter’s succour.

Accordingly for SAARC this should be the time for some soul-searching. Priority needs to be attached to ending the feuding between India and Pakistan since at present the material fortunes of the region hinge largely on these regional giants giving peaceful relations among them a try. This is no easy challenge to meet but some daring, visionary diplomacy needs to take hold among the rest of SAARC.

There is some sense in SAARC bringing the peoples of the region together through programs that address their best collective interests. A meeting of minds among SAARC nations could enable SAARC and its agencies to build a region-wide people’s movement for progressive political and economic change that could in turn lead to the region’s political leaders sensitizing themselves more to the neglected needs of their publics.

However, the time is ‘now’ for the initiation of these progressive changes and the voice of SAARC well wishers would need to drown out those of their critics.

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OPA seminar examines Sri Lanka’s economic recovery, resilience and growth pathways

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(L to R) Dr Achinthya Koswatte, Anushan Kapilan, Dr Harsha Aturupane, Bhanu Wijeyaratne, Vice President, OPA and moderator of the discussion, and Eng Chamil Edirimuny, General Secretary, OPA, at the head table.

A seminar, “Sri Lanka’s Economic Crossroads: Navigating Recovery, Resilience and Growth” was recently held by the Organisation of Professional Associations of Sri Lanka (OPA) at the OPA Auditorium, bringing together economists, OPA members, and professionals from diverse fields for an insightful discussion on Sri Lanka’s economic recovery and future growth prospects.

The event was held under the patronage of Jayantha Gallehewa, President of the OPA, and was jointly organised by the National Issues Committee (NIC) and the Seminars, Workshops and Programmes Committee of the OPA. The event reaffirmed the organisation’s commitment to advancing professional excellence, fostering insightful intellectual engagement, facilitating interdisciplinary knowledge exchange and creating a constructive platform for informed dialogue on issues of national importance.

The panel of speakers comprised Dr. Harsha Aturupane, Lead Economist and Programme Leader for Human Development at the World Bank for Sri Lanka and the Maldives; Dr. Achinthya Koswatta, Senior Lecturer in Economics at the Open University of Sri Lanka, and Anushan Kapilan, Lead Economist at Verité Research.

In his welcome address, the President of the OPA emphasised that Sri Lanka was at a critical juncture in its economic recovery journey where sustained reforms, effective implementation, and collective national commitment are essential to achieving long-term stability, resilience and inclusive growth. He noted that the country had experienced one of the most severe economic crises in its history with the economy contracting by 7.8 percent in 2022 and a further 11.5 percent in 2023, resulting in significant economic and social challenges.

Delivering his introductory remarks Bhanu Wijeyaratne, Vice President of the OPA and Chairman of the National Issues Committee, underscored the need to move beyond short-term economic stabilisation towards a comprehensive agenda of structural transformation. He observed that the economic crisis had revealed deep-rooted weaknesses within the economy, including persistent fiscal pressures, rising public debt, foreign exchange limitations, and insufficient diversification of the export base. He stressed that addressing these challenges through strategic reforms, institutional strengthening and long-term economic planning would be essential to establishing a more resilient and competitive economy.

While acknowledging recent positive developments, including improved inflation management, tourism recovery and signs of economic stabilisation, Wijeyaratne stressed the need to advance reforms aimed at strengthening fiscal discipline, enhancing productivity, improving competitiveness, developing human capital and reinforcing governance and institutional effectiveness.

He further highlighted the important role of professionals, businesses, academia and other stakeholders in contributing to evidence-based dialogue and supporting Sri Lanka’s journey towards a resilient, inclusive and sustainable economic future.

Delivering the keynote presentation, Dr. Harsha Aturupane provided a comprehensive assessment of Sri Lanka’s economic prospects within the broader context of global economic transformation. He argued that Sri Lanka functioned as a small open economy whose performance is significantly influenced by developments in the global marketplace. External factors could not be controlled, and the country must strengthen its domestic capacity and resilience to respond effectively to international economic shifts, he noted.

Tracing the evolution of global economic systems, Dr. Aturupane highlighted the transition from ideological divisions between state-controlled and market-oriented economies towards increasingly pragmatic approaches focused on growth, competitiveness and development. He noted that Sri Lanka’s own economic journey reflects a similar evolution, with contemporary policy debates now centred on practical solutions for sustainable economic progress.

The presentation also examined the transformative impact of globalisation. Dr. Aturupane observed that global economic integration had enabled several East Asian economies, including South Korea, Singapore, Taiwan and Hong Kong, to achieve remarkable economic advancement through export-led growth strategies. Sri Lanka similarly benefited from this process through the expansion of its apparel industry and increased integration into global value chains.

Turning to Sri Lanka’s recovery programme, Dr. Aturupane emphasised that the ongoing stabilisation process should be viewed as a national programme supported by the International Monetary Fund rather than solely as an IMF initiative. He observed that strong worker remittances, improved tourism earnings, enhanced government revenue mobilisation and prudent import management have contributed significantly to economic stabilisation.

Despite this progress, he cautioned that rebuilding foreign exchange reserves and meeting future debt obligations remain major challenges. He underscored the need to strengthen export performance, attract investment and generate sustainable foreign exchange earnings to ensure long-term economic resilience.

The discussion also focused on monetary stability, inflation management and exchange-rate policy. Dr. Aturupane stressed that maintaining price stability was fundamental to sustainable growth and household welfare, while sound monetary policy remains essential for preserving economic confidence.

Looking beyond stabilisation, he argued that Sri Lanka must transition towards a broader economic transformation agenda. Sustainable growth, he noted, will depend on expanding productive capacity through investment, technological advancement, innovation, skills development and structural reforms.

Among the key constraints identified was the high cost of energy, which continues to affect competitiveness and investment attractiveness. Dr. Aturupane emphasised the importance of improving efficiency and affordability within the energy sector to enhance Sri Lanka’s business environment.

He further highlighted the social dimensions of the crisis, noting the rise in poverty and economic vulnerability among households. Strengthening social protection systems and ensuring inclusive growth, he argued, must remain central components of the national development agenda.

Another critical challenge identified was Sri Lanka’s demographic transition. With an ageing population, outward migration and evolving labour market dynamics, the country is increasingly confronting labour shortages in several sectors. Dr. Aturupane suggested that greater automation, increased labour-force participation and strategic workforce planning would be necessary to address these emerging realities.

Concluding his presentation, he emphasised the need to improve governance, strengthen institutions, enhance competitiveness and create an enabling environment for private sector investment. Sri Lanka’s future success, he noted, will depend on its ability to move decisively beyond crisis management towards a development model founded on resilience, innovation, productivity and inclusive growth.

Dr. Achinthya Koswatta reiterated the importance of policy consistency and predictability in fostering investment and industrial development. She observed that frequent policy changes create uncertainty and discourage long-term investment decisions, whereas stable and coherent policy frameworks build confidence and support sustainable economic transformation.

Meanwhile, Anushan Kapilan highlighted the substantial progress achieved in restoring macroeconomic stability following the recent crisis. He noted significant improvements in fiscal performance, including increased government revenue, reduced reliance on debt financing and a historically low fiscal deficit.

He further observed that public debt levels are declining faster than anticipated, economic growth has exceeded expectations and inflation has been brought under control more rapidly than forecast. Nevertheless, he cautioned that the recovery remains uneven, particularly within the industrial sector and that many households have yet to experience a meaningful improvement in living standards.

The seminar was expertly coordinated by Eng. Chamil Edirimuni, Vice President of the OPA and Chairman of the Seminars, Workshops and Programmes Committee, while the technical moderation and interactive discussion session were facilitated by Bhanu Wijeyaratne, Vice President of the OPA and Chairman of the National Issues Committee.

The event was attended by Tisara De Silva, President-Elect of the OPA, Eng. Ravi Rupasinghe, General Secretary, Past Presidents, members of the Executive Council, representatives of the General Forum and professionals representing a wide range of disciplines.

The seminar concluded with a vibrant exchange of ideas and perspectives, reaffirming the importance of evidence-based policy dialogue, institutional collaboration and collective national commitment in advancing Sri Lanka’s economic recovery, resilience and sustainable growth.

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Her roots run deep in Sri Lanka

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Samantha Kay: Now based in the UK Samantha’s biggest passion is helping people, especially women, build confidence and believe in themselves Today, her focus is on radio, podcasting and coaching women Whenever she visits Sri Lanka, she says she loves spending time on the beautiful south coast, especially Hikkaduwa and Mirissa She released a song with 90s music icon Angie Brown, which reached No. 9 in the UK Club Charts

Yes, for UK-based presenter and artiste Samantha Kay, home is where the heart – and the roots – are. And her roots run deep in Sri Lanka.

In an exclusive interview with The Island, Samantha says “I’m proud to be Sri Lankan. My mum is from Kandy and my dad is from Colombo, so Sri Lanka has always held a very special place in my heart.

“Whenever I visit Sri Lanka, I love spending time on the beautiful south coast, especially Hikkaduwa and Mirissa. It’s somewhere I always feel connected to my roots and completely at peace.”

Now living in Bournemouth, on the south coast of England, where, she says, she is lucky to be close to some of the UK’s most beautiful beaches, including the iconic Sandbanks, Samantha has built a career that refuses to fit into one box.

She is a radio presenter, podcast host, singer-songwriter, personal trainer and life coach.

“I genuinely love the variety because every role allows me to connect with people and, hopefully, make a positive difference in someone’s day.”

Of course, music has taken her far.

One of her proudest achievements, she says, was releasing a song with 90s music icon Angie Brown, which reached No. 9 in the UK Club Charts.

She also reached the final stages of The X Factor and performed at Wembley Stadium in front of thousands.

Beyond music, Samantha competed in bikini bodybuilding across the UK, winning several titles. “It taught me discipline, resilience and self-belief,” she recalls.

Today, her focus is on radio, podcasting and coaching women. Her podcast encourages people to live life on their own terms rather than feeling pressured to follow society’s expectations.

Says Samantha: “Whether someone is single, changing careers, travelling solo or simply trying to find their purpose, I want them to know that it’s never too late to create a life that feels authentic. If you’ve ever felt like you don’t fit into the box, maybe you were never meant to.”

Samantha Kay also spent a year in Dubai, performing at five-star hotels, including FIVE, and coaching at the iconic outdoor gym on Palm Jumeirah.

“I taught strength and conditioning classes, and hosted wellness retreats, combining my passion for music, health and inspiring others.”

However, with family matters calling her back to the UK, she made the choice to return. “Family comes first,” she says.

Looking ahead, Samantha plans to grow her radio and podcast work, release more music, and expand her wellness retreats.

“My biggest passion is helping people, especially women, build confidence and believe in themselves,” she says.

“Wherever my career takes me, I hope to continue inspiring others to live with courage, kindness and authenticity, while never forgetting my Sri Lankan roots.”

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