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Parakrama Samudraya, 1978 flood, and strength of tank bund

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By Palitha Manchanayake

Former Irrigation Engineer, Sri Lanka and Hydrologist/Flood Forecaster to the Commonwealth Bureau of Meteorology, Sydney, Australia In this article, the author wishes to highlight his experience during the November 1978 cyclone, while working as an Irrigation Engineer (IE) attached to the Hydrology branch of the Irrigation Department, Sri Lanka.

That particular morning, Tilak Nikapitiya (IE) and I were called in by late Olsen Gunawardane, Senior Deputy Director (Research), to his office and asked us to take a ‘Four-Wheel Drive’ and proceed to Polonnaruwa immediately to meet A.D.S. Gunawardane (IE, Polonnaruwa). We were also expected to rescue and look after the Hydrological Field Unit and the Drilling Team of the Engineering Geology Division who had got marooned in the flood while working in the Maduru Oya area. Before leaving, Gunawardane showed us a photograph that had appeared on page one of the Ceylon Daily News on that day. It had been taken from a helicopter hovering above the Parakrama Samudraya .It showed the flood waves of Parakrama Samudraya overtopping its bund in many places. The Parakrama Samudraya Reservoir was at full capacity, and the water level was quite close to the bund top. Owing to the reservoir’s long fetch of water-spread and the high wind velocities that prevailed during the cyclone, the flood waves generated at the surface were overtopping the reservoir bund.

The author recollects that he had never encountered such a drastic and serious situation during his entire 49-year career as an Irrigation Engineer/Hydrologist. It was an alarming and critical situation considering the danger to the large population living in Polonnaruwa suburbs located below the Parakrama Samudra.

The Parakrama Samudraya Reservoir was built by King Parakramabahu the Great, during his reign (1153-1186 AD) and it has a capacity of 98,000 acre-feet, feeding approximately 18,200 acres of paddy cultivation. This reservoir has a tank bund,which is 52 feet high and nine miles long. When the reservoir is full, the entire nine-mile long bund is tested. It is an earthen dam constructed by the ancient Sri Lankan dam builders about 1,000 years ago.

If an earthen dam is to be built today, one has to follow the principles of soil mechanics, and adhere to the criteria involved in selecting the particular type of soil to be used in construction and the identification of suitable borrow areas for them, and maintaining the required standards of compacting and consolidating the soils. In this process, the mere ramming of soil would not do. It has to be done with the appropriate addition of water so that the maximum soil density is achieved through the optimum soil-moisture content. In the present day, this is achieved by compacting the soil with sheep-foot rollers and performing the ‘in-situ’ soil tests on site. But when the reservoir is on the verge of being overtopped by flood waves, it, in fact, tests the soil mechanics and the compaction techniques adopted using cattle and elephants done in ancient times. If there was a portion of earthen bund of poor quality it could fail and the dam could breach at that point. If this impending dam break happens at an unwanted and unexpected point on the dam, it could be disastrous and devastating, as so many civilians and property downstream of Parakrama Samudra would be seriously affected.

Knowing the imminent catastrophic danger, the Irrigation Engineer (IE) in charge of Polonnaruwa, A.D.S Gunawardane, the Government Agent (GA) Polonnaruwa, Austin Fernando, and a few other officials on duty, decided to get over a few bulldozers and retain them at the sluice and spillway sites, to breach the dam at these points if the need arose. The idea behind it was, if the predicted overnight rainfall occurs and the anticipated inflow to Parakrama Samudra does eventuate, then an artificially introduced breach of the dam at one of these particular outlets would enhance the draining of the floods along the already existing channels, rather than haphazard catastrophic flood damage occurring at an unwanted point over the downstream townships. In doing so, the ‘flood operation team’ would be controlling the flood somewhat, minimising damage to life and property, but the IE would be facing the danger of not being able to continue the issue of water to about 18,000 acres of paddy cultivation which was halfway through the Maha Season. Because of this artificial breaching of the dam, no water would be retained in the reservoir as it would completely empty. As such, it could result in crop failure of a vast acreage, which would be a significant political issue. Farmers who have invested their money in land preparation, seed-paddy, weedicide and pesticides would end up desperate and without any income, possibly creating farmer unrest in the area.

As such, the flood operators were very reluctant to go through with the breaching option unless they were left with no alternative. Yet another unknown factor was how much of the predicted rainfall would occur overnight in the already wet 28 square-mile catchment of Parakrama Samudraya , in addition to whatever inflow that came through Amban Ganga. So, after much deliberation that night, the ‘flood operation team’ decided to stay overnight leaving all sluice and spillway gates open, anticipating the predicted rain to fall over the catchment.

At dawn the following morning, a completely unexpected phenomenon was evident. Even though the reservoir water levels did not overtop the bund and were under control, the anticipated overnight rainfall had not really eventuated, and because the sluice and spillway gates were kept open overnight, the water levels had gone down drastically, causing ‘slip circle failures’ in the dam at many places along the entire stretch of the dam.

Even though there was a 12-foot wide roadway at the crest of the dam, a fair portion of the dam had caved-in with earth slips slumping into the reservoir, leaving only about a four-foot-wide section of the former roadway intact (Figure 2). This could be explained in engineering terms as ‘slip circle failures caused by the sudden drawdown of the water table. The increased pore water pressures of the soil have caused these slips to occur’. It was inevitable, as there were predictions of more overnight rain in the catchment which required due consideration, and there was no way of monitoring the inflow to Parakrama Samudraya at that late hour of the night. This happened in Polonnaruwa, Sri Lanka in November 1978.

The Parakrama Samudraya had to be restored by re-constructing the entire stretch of the damaged bund, which resulted in a major exercise of dam construction. It was re-done with a much broader roadway at the dam crest, and also with big rock boulders in rip-rap to serve as wave-breakers in future.

In this ‘flood operation’ exercise of November 1978, all of 18,200 acres of paddy cultivation was saved, as the Parakrama Samudraya Reservoir was able to issue the required water for the rest of the Maha Season. Luckily, the much-feared disastrous breaching of the bund did not happen. It was indeed a revealing experience for all the Irrigation Engineers of the present day, who manage the ancient reservoirs built by Sri Lankan Kings. On further reflection, one could argue that had we taken the option of artificially breaching the dam bund at a sluice or spill site, we would have overcome the flood dissipating problem easily with a lesser cost of dam construction, but ended up with devastating crop failure of 18,200 acres of paddy cultivation.

What is amazing is that the nine-mile-long earth bund of Parakrama Samudraya stood strong without breaching against the force and the head of water generated by the cyclone, giving full credit to King Parakramabahu the Great and his men.

These were the sort of risks, problems and threats we were faced with when handling the 1978 flood event.

If the eight-foot-wide jogging strip (as proposed in Figure 3) were to be constructed, then it should be at least three feet below the Bund Top Level (B.T.L), in which case a retaining wall of some sort has to be built to ensure the safety of the 16-foot-wide roadway at the top. The construction of this retaining wall could be of concern with the existing structure of the earthen bund.

One case that comes to mind is how late R. Premadasa (then Prime Minister and the Minister of Local Government) around the 1985/86 period, installed a Pumping Station on top of the old Kantale Bund to provide drinking water to the nearby town. After operating the huge pumps for some time, the Bund failed due to the vibrations of continuous pumping. But in the case of the jogging strip at Parakrama Samudraya , one could expect minimal vibrations.

Some point out that no problems have been reported regarding the jogging track at Tissa Wewa in Tissamaharama, built in 2014. At Tissa Wewa, the road is by the side of the lake with a low bund height of about 15 ft. But in the case of Parakrama Samudra, the tank bund is higher, and it is a completely different scenario.

One more important aspect of the new construction that merits discussion is the non-existence of the rip-rap. They say that they are going to roll the big rock boulders downward. The big rock boulders or the rip-rap is actually there to break the waves that occur when the reservoir is operating with water levels above the High Flood Level (H.F.L). The Full Supply Level (F.S.L) generally corresponds to the Full Operating Capacity of the Reservoir. During a special situation, when a flood occurs while the water level remains at F.S.L., the radial gates would be opened. At the point when this flood passes through the spillway system with all its gates open, the extra lift of the water level of the reservoir is called the ‘Flood Lift’. In Sri Lankan reservoirs, the ‘Flood Lift’ is generally calculated for a flood event of 1 in 100-year frequency. This ‘Flood Lift’ is the basis to decide on the H.F.L. of the reservoir. The difference between the H.F.L. and the Bund Top Level (B.T.L) is referred to as the ‘Free Board’ which accounts for the waves that are generated at the surface of the reservoir. The rip-rap which consists of the big boulders is there to break the waves, and it has to be placed between the H.F.L and B.T.L of the reservoir. So, if they are going to roll the big boulders below the H.F.L with the new construction, the purpose would be lost, and if a flood event like the one in 1978 occurs again, there would be one less defence mechanism for wave-breaking, which could be awful.

Therefore, I do not think that it is advisable to do any sort of alteration, meddle with or disturb the good old bund.

(The writer is a former Irrigation Engineer, Sri Lanka and Hydrologist/Flood Forecaster to the Commonwealth Bureau of Meteorology, Sydney, Australia)


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Relief without recovery

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A US airstrike on an Iranian oil storage facility

The escalating conflict in the Middle East is of such magnitude, with loss of life, destruction of cities, and global energy shortages, that it is diverting attention worldwide and in Sri Lanka, from other serious problems. Barely four months ago Sri Lanka experienced a cyclone of epic proportions that caused torrential rains, accompanied by floods and landslides. The immediate displacement exceeded one million people, though the number of deaths was about 640, with around 200 others reported missing. The visual images of entire towns and villages being inundated, with some swept away by floodwaters, evoked an overwhelming humanitarian response from the general population.

When the crisis of displacement was at its height there was a concerted public response. People set up emergency kitchens and volunteer clean up teams fanned out to make flooded homes inhabitable again. Religious institutions, civil society organisations and local communities worked together to assist the displaced. For a brief period the country witnessed a powerful demonstration of social solidarity. The scale of the devastation prompted the government to offer generous aid packages. These included assistance for the rebuilding of damaged houses, support for building new houses, grants for clean up operations and rent payments to displaced families. Welfare centres were also set up for those unable to find temporary housing.

The government also appointed a Presidential Task Force to lead post-cyclone rebuilding efforts. The mandate of the Task Force is to coordinate post-disaster response mechanisms, streamline institutional efforts and ensure the effective implementation of rebuilding programmes in the aftermath of the cyclone. The body comprises a high-level team, led by the Prime Minister, and including cabinet ministers, deputy ministers, provincial-level officials, senior public servants, representing key state institutions, and civil society representatives. It was envisaged that the Task Force would function as the central coordinating authority, working with government agencies and other stakeholders to accelerate recovery initiatives and restore essential services in affected regions.

Demotivated Service

However, four months later a visit to one of the worst of the cyclone affected areas to meet with affected families from five villages revealed that they remained stranded and in a state of limbo. Most of these people had suffered terribly from the cyclone. Some had lost their homes. A few had lost family members. Many had been informed that the land on which they lived had become unsafe and that they would need to relocate. Most of them had received the promised money for clean up and some had received rent payments for two months. However, little had happened beyond this. The longer term process of rebuilding houses, securing land and restoring livelihoods has barely begun. As a result, families who had already endured the trauma of disaster, now face prolonged uncertainty about their future. It seems that once again the promises made by the political leadership has not reached the ground.

A government officer explained that the public service was highly demotivated. According to him, many officials felt that they had too much work piled upon them with too little resources to do much about it. They also believed that they were underpaid for the work they were expected to carry out. In fact, there had even been a call by public officials specially assigned to cyclone relief work to go on strike due to complaints about their conditions of work. This government official appreciated the government leadership’s commitment to non corruption. But he noted the irony that this had also contributed to a demotivation of the public service. This was on the unjustifiable basis that approving and implementing projects more quickly requires an incentive system.

Whether or not this explanation fully captures the situation, it points to an issue that the government needs to address. Disaster recovery requires a proactive public administration. Officials need to reach out to affected communities, provide clear information and help them navigate the complex procedures required to access assistance. At the consultation with cyclone victims this was precisely the concern that people raised. They said that government officers were not proactive in reaching out to them. Many felt they had little engagement with the state and that the government officers did not come to them. This suggests that the government system at the community level could be supported by non-governmental organisations that have the capacity and experience of working with communities at the grassroots.

In situations such as this the government needs to think about ways of motivating public officials to do more rather than less. It needs to identify legitimate incentives that reward initiative and performance. These could include special allowances for those working in disaster affected areas, recognition and promotion for officers who successfully complete relief and reconstruction work, and the provision of additional staff and logistical support so that the workload is manageable. Clear targets and deadlines, with support from the non-governmental sector, can also encourage officials to act more proactively. When government officers feel supported and recognised for the extra effort required, they are more likely to engage actively with affected communities and ensure that assistance reaches those who need it most.

Political Solutions

Under the prevailing circumstances, however, the cyclone victims do not know what to do. The government needs to act on this without further delay. Government policy states that families can receive financial assistance of up to Rs 5 million to build new houses if they have identified the land on which they wish to build. But there is little freehold land available in many of the affected areas. As a result, people cannot show government officials the land they plan to buy and, therefore, cannot access the government’s promised funds. The government needs to address this issue by providing a list of available places for resettlement, both within and outside the area they live in. However, another finding at the meeting was that many cyclone victims whose lands have been declared unsafe do not wish to leave them. Even those who have been told that their land is unstable feel more comfortable remaining where they have lived for many years. Relocating to an unfamiliar area is not an easy decision.

Another problem the victims face is the difficulty of obtaining the documents necessary to receive compensation. Families with missing members cannot prove that their loved ones are no longer alive. Without official confirmation they cannot access property rights or benefits that would normally pass to surviving family members. These are problems that Sri Lanka has faced before in the context of the three decade long internal war. It has set up new legal mechanisms such as the provision of certificates of absence validated by the Office on Missing Persons (OMP) in place of death certificates when individuals remain missing for long periods. The government also needs to be sensitive to the fact that people who are farmers cannot be settled anywhere. Farming is not possible in every location. Access to suitable land and water is essential if farmers are to rebuild their livelihoods. Relocation programmes that fail to take these realities into account risk creating new psychological and economic hardships.

The message from the consultation with cyclone victims is that the government needs to talk more and engage more directly with affected communities. At the same time the political leadership at the highest levels need to resolve the problems that government officers on the ground cannot solve. Issues relating to land availability, legal documentation and livelihood restoration require policy decisions at higher levels. The challenge to the government to address these issues in the context of the Iran war and possible global catastrophe will require a special commitment. Demonstrating that Sri Lanka is a society that considers the wellbeing of all its citizens to be a priority will require not only financial assistance but also a motivated public service and proactive political leadership that reaches out to those still waiting to rebuild their lives.

 

by Jehan Perera

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Supporting Victims: The missing link in combating ragging

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A recent panel discussion at the University of Peradeniya examined the implications of the Supreme Court’s judgement on ragging, in which the Court recognised that preventing ragging requires not only criminal penalties imposed after an incident occurs but also systems and processes within universities that enable victims to speak up and receive support. Bringing together perspectives from law, university administration, psychology and students, the discussion sought to understand why ragging continues to persist in Sri Lankan universities despite the existence of legal prohibitions. While the discussion covered legal and institutional dimensions, one theme emerged clearly: addressing ragging requires more than laws and disciplinary rules. It requires institutions that are capable of supporting victims.

Sri Lanka enacted the Prohibition of Ragging and Other Forms of Violence in Educational Institutions Act No. 20 of 1998 following several tragic incidents in universities, during the 1990s. Among the most widely remembered is the death of engineering student S. Varapragash at the University of Peradeniya in 1997. Incidents such as this shocked the country and revealed the consequences of allowing violent forms of student hierarchy to persist. The 1998 Act marked an important legal intervention by recognising ragging as a criminal offence. The law introduced severe penalties for individuals found guilty of engaging in ragging or other forms of violence in educational institutions, including fines and imprisonment.

Despite the existence of this law for nearly three decades, prosecutions under the Act have been extremely rare. Incidents continue to surface across universities although most are not reported. The incidents that do reach university administrations are dealt with internally through disciplinary procedures rather than through the criminal justice system. This suggests that the problem does not lie solely in the absence of legal provisions but also in the ability of victims to come forward and pursue complaints.

The tragic reminders; the cases of Varapragash and Pasindu Hirushan

Varapragash, a first-year engineering student at the University of Peradeniya, was forced by senior students to perform extreme physical exercises as part of ragging, resulting in severe internal injuries and acute renal failure that ultimately led to his death. In 2022, the courts upheld the conviction of one of the perpetrators for abduction and murder. The case illustrates not only the brutality of ragging but also how long and difficult the path to justice can be for victims and their families. Even when victims speak about their experiences, they may not always disclose the full extent of what they have endured. In the case of Varapragash, the judgement records that the victim told his father that he was asked to do dips and sit-ups. Varapragash’s father had testified that it appeared his son was not revealing the exact details of what he had to endure due to shame.

More than two decades after the death of Varapragash, the tragedy of ragging continues. The 2025 Supreme Court judgement arose from the case of Pasindu Hirushan, a 21-year-old student of the University of Sri Jayewardenepura, who sustained devastating head injuries at a fresher’s party, in March 2020, after a tyre sent down the stairs by senior students struck him. He became immobile, was placed on life support, and returned home only months later. If the Varapragash case exposed the deadly consequences of ragging in the 1990s, the Pasindu Hirushan case demonstrates that universities are still failing to prevent serious violence, decades after the enactment of the 1998 Act. It was against this background of continuing institutional failure that the Supreme Court issued its Orders of Court in 2025. Among the key mechanisms emphasised by the judgement is the establishment of Victim Support Committees within universities.

Why do victims need support?

Ragging in universities can take many forms, including verbal humiliation, physical abuse, emotional intimidation and, in some instances, sexual harassment. While all forms of ragging can have serious consequences, incidents involving sexual harassment often present additional barriers for victims who wish to come forward. Victims may hesitate to complain due to weak institutional mechanisms, fear of retaliation, or uncertainty about whether their experiences will be taken seriously. In many cases, those who speak out are confronted with questions that shift attention away from the alleged misconduct and onto their own behaviour: why did s/he continue the conversation?; why did s/he not simply disengage, if the harassment occurred as claimed?; why did s/he remain in the environment?; or did his/her actions somehow encourage the accused’s behaviour? Such responses illustrate how easily victims can be subjected to a second layer of scrutiny when they attempt to report incidents. When individuals anticipate disbelief, minimisation or blame, silence may appear safer than disclosure. In such circumstances, the presence of a trusted institutional body, capable of providing guidance, protection and support, become critically important, highlighting the need for effective Victim Support Committees within universities.

What Victim Support Committees must do

As expected by the Supreme Court, an effective Victim Support Committee should function as a trusted institutional mechanism that places the safety and dignity of victims at the centre of its work. The committee must provide a safe and confidential point of contact through which victims can report incidents of ragging without fear of intimidation or retaliation. It should assist victims in understanding and pursuing available complaint procedures, while also ensuring their immediate protection where there is a risk of continued harassment. Recognising the psychological harm ragging may cause, the committee should facilitate access to counselling and emotional support services. At a practical level, it should also help victims document incidents, record statements, and preserve evidence that may be necessary for disciplinary or legal proceedings. The committee must coordinate with university authorities to ensure that complaints are addressed promptly and responsibly, while maintaining strict confidentiality to protect the identity and well-being of those who come forward. Beyond responding to individual cases, Victim Support Committees should also contribute to broader awareness and prevention efforts, within universities, helping to create an environment where ragging is actively discouraged and students feel safe to report incidents. Without such support, the process of pursuing justice can become overwhelming for individuals who are already dealing with the emotional impact of abuse.

Making Victim Support Committees work

According to the Orders of Court, these committees should include representatives from the academic and non-academic staff, a qualified counsellor and/or clinical psychologist, an independent person, from outside the institution, with experience in law enforcement, health, or social services, and not more than three final-year students, with unblemished academic and disciplinary records, appointed for fixed terms. Further, universities must ensure that committees consist of individuals who possess both expertise and genuine commitment in areas such as student welfare, psychology, gender studies, human rights and law enforcement, in line with the spirit of the Supreme Court’s directions, rather than consisting largely of ex officio positions. If treated as routine administrative positions, rather than responsibilities requiring specialised knowledge, sensitivity and empathy, these committees risk becoming symbolic rather than functional.

Greater transparency in the appointment process could strengthen the credibility of these committees. Universities could invite expressions of interest from individuals with relevant expertise and demonstrated commitment to supporting victims. Such an approach would help ensure that the committees benefit from the knowledge and dedication of those best equipped to fulfil this role.

The Supreme Court judgement also introduces an important safeguard by giving the University Grants Commission (UGC) the authority to appoint members to university-level Victim Support Committees. If exercised with integrity, this provision could help ensure that these committees operate with greater independence. It may also help address a challenge that sometimes arises within institutions, where individuals, with relevant expertise, or strong commitment to addressing issues, such as violence, harassment or student welfare, may not always be included in institutional mechanisms due to internal administrative preferences. External oversight by the UGC could, therefore, create opportunities for such individuals to contribute meaningfully to Victim Support Committees and strengthen their effectiveness.

Ultimately, the success of the recent judgement will depend not only on the directives it issued, the number of committees universities establish, or the number of meetings they convene, or other box-checking exercises, but on how sincerely those directives are implemented and the trust these committees inspire among students and staff. Laws can prohibit ragging, but they cannot by themselves create environments in which victims feel safe to speak. That responsibility lies with institutions. When universities create systems that listen to victims, support them and treat their experiences with seriousness, universities will become places where dignity and learning can coexist.

(Udari Abeyasinghe is attached to the Department of Oral Pathology at the University of Peradeniya)

Kuppi is a politics and pedagogy happening on the margins of the lecture hall that parodies, subverts, and simultaneously reaffirms social hierarchies.

by Udari Abeyasinghe

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Big scene … in the Seychelles

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Mirage: Off to the Seychelles for fifth time

Several of our artistes do venture out on foreign assignments but, I’m told, most of their performances are mainly for the Sri Lankans based abroad.

However, the group Mirage is doing it differently and they are now in great demand in the Seychelles.

Guests patronising the Lo Brizan pub/restaurant, Niva Labriz Resort, in the Seychelles, is made up of a wide variety of nationalities, including Russians, Chinese, French and Germans, and they all enjoy the music dished out by Mirage, and that is precisely why they are off to the Seychelles … for the fifth time!

The band is scheduled to leave this month and will be back after three weeks, but their journey to the Seychelles will continue, with two more assignments lined up for 2026.

In August it’s a four-week contract, and in December another four-week contract that will take in the festive celebrations … Christmas and the New Year.

Donald’s birthday
celebrations

According to reports coming my way, it is a happening scene at the Lo Brizan pub/restaurant, Niva Labriz Resort, whenever Mirage is featured, and the band has even adjusted its repertoire to include local and African songs.

They work three hours per day and six days per week at the Lo Brizan pub/restaurant.

Donald Pieries:
Leader, vocalist,
drummer

Led by vocalist and drummer Donald Pieries, many say it is his

musical talents and leadership that have contributed to the band’s success.

Donald, who celebrated his birthday on 07 March, at the Irish Pub, has been with the group through various lineup changes and is known for his strong vocals.

He leads a very talented and versatile line up, with Sudham (bass/vocals), Gayan (lead guitar/vocals), Danu (female vocalist) and Toosha (keyboards/vocals).

Mirage performs regularly at venues like the Irish Pub in Colombo and also at Food Harbour, Port City.

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