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Distributed Modelling of Water Resources and Pollute Transport in Malwathu Oya Basin, Sri Lanka
-1DWQ6FL)RXQGDWLRQ6UL/DQND DOI: http://dx.doi.org/10.4038/jnsfsr.v47i3.9281 RESEARCH ARTICLE Distributed modelling of water resources and pollute transport in Malwathu Oya Basin, Sri Lanka A.C. Dahanayake * and R.L.H.L. Rajapakse 'HSDUWPHQWRI&LYLO(QJLQHHULQJ)DFXOW\RI(QJLQHHULQJ8QLYHUVLW\RI0RUDWXZD.DWXEHGGD0RUDWXZD Submitted: 04 April 2018; Revised: 11 April 2019; Accepted: 03 May 2019 Abstract: The Nachchaduwa sub-catchment (598.74 km 2) of the Malwathu Oya basin is seasonally stressed in the dry INTRODUCTION SHULRGVDQGLWVGRZQVWUHDPSDUWVXQGHUJRLQWHUPLWWHQWÀRRGV during monsoon seasons while the fate and behaviour of excess Water, being a vital natural resource to sustain all life QLWURJHQ 1 DQGSKRVSKRUXV 3 DGGHGWRWKHZDWHUZD\VGXH forms on earth, has now become a limited resource due to to agricultural fertilisers used in the upstream areas remain the adverse impacts of various natural and anthropogenic unresolved. This study incorporated the Water and Energy causes. Due to the increasing population and rapid 7UDQVIHU3URFHVVHV :(3 PRGHOWRDVVHVVWKHSUHVHQWVWDWXV urbanisation, the demand for water has been increasing of the catchment concerning water resources and pollutant drastically. Further, the quality of the available fresh transport. Results showed that the catchment response to the water resources has been deteriorating mainly due to UDLQIDOO LV KLJKO\ UHJXODWHG GXH WR UHVHUYRLU VWRUDJH H൵HFW pollution created by the anthropogenic activities in many XQJDXJHGEDVLQZLWKUHJXODWHGÀRZV 7KHDPRXQWVRI1DQG3 rivers in developing countries, which -
Indo-Pacific
INDO-PACIFIC Sri Lanka: Operations Begin on New Chinese-Funded Artificial Island OE Watch Commentary: A newly reclaimed island adjacent to Sri Lanka’s capital Colombo has begun attracting businesses. Named “Port City Colombo,” the 269 hectares (664 acres) of reclaimed land juts almost two kilometers into the Laccadive Sea. The project is intended to help turn Colombo into a retail and financial hub, the latter dubbed “Colombo International Financial City,” pulling in investment from India and South Asia. The excerpted article notes that China provided the entirety of the $1.4 billion dollars needed to build the island, setting China’s investments in the country apart from those of the US and Japan, which the article claims, “are also vying for influence” in the country along with India. Gotabaya Rajapaksa, who was elected Sri Lanka’s president in November 2019, is viewed as being pro-China, and the article notes that his prime minister, Mahinda Rajapaksa, served as President during a period of growing relations with China. The Colombo project is not the only billion-dollar Chinese investment in the country. ColomboHarbour-November2015-04. Source: Rehman Abubakr via Wikimedia, https://zh.m.wikipedia.org/wiki/File:ColomboHarbour- The Hambantota Development Zone, on Sri Lanka’s southern coast and initiated in 2008, November2015-04.JPG, CC BY-SA 4.0 has attracted even more foreign scrutiny than the Colombo project. In 2017, then-Prime Minister Wickremesinghe agreed to terms that gave China Merchants Port Holdings Company a 99-year lease. The company is majority-owned by China Merchants Group [招商局集团], itself owned by China’s State-owned Assets Supervision and Administration Commission which oversees State-owned enterprises (SOEs). -
River Sand Mining – Boon Or Bane
RIVER SAND MINING - BOON OR BANE? A synopsis of a series of national, provincial and local level dialogues on unregulated / illicit river sand mining Compiled by Ranjith Ratnayake Sri Lanka Water Partnership ? ? RIVER SAND MINING - BOON OR BANE? A synopsis of a series of national, provincial and local level dialogues on unregulated / illicit river sand mining Compiled by Ranjith Ratnayake Sri Lanka Water Partnership November 2008 River Sand Mining (Manual) Sand Removal from River Bed RIVER SAND BOON OR BANE? Preface Unregulated and illicit River Sand Mining (RSM) and its consequences with the related aspect of corruption, has been an issue that has constantly come up for discussion at forums organized by the Sri Lanka Water Partnership (SLWP) on Integrated Water Resources Management (IWRM) and other water related topics, starting with a Gender and Water dialogue held in Kurunegala in 2005. Two of the Area Water Partnerships (AWP) established for Deduru Oya (Deduru Oya Surakeeme Sanvidhanaya ) and the Maha Oya (Maha Oya Mithuro) have this as the priority issue, whilst three other AWP for Malwatu Oya , Upper Mahaveli and Nilwala highlight sand mining as needing urgent resolution. The SLWP after several local discussions organized a National Dialogue on River Sand and Clay Mining on 24th April 2006 in Colombo in collaboration with the Capacity Development Network (CapNet ) and the Network of Women Water Professionals ( NetWwater). The Hon; Minister of Science and Technology who was Chief Guest at this workshop attended by the relevant agencies and NGO agreed to set up a Ministerial Task Force for technological alternatives to river sand to be considered . -
An Economic Analysis of Intersectoral Water Allocation In
AN ECONOMIC ANALYSIS OF INTERSECTORAL WATER ALLOCATION IN SOUTHEASTERN SRI LANKA BY SARATH PARAKRAMA WELIGAMAGE A dissertation submitted in partial fulfillment of the requirements for the degree of DOCTOR OF PHILOSOPHY WASHINGTON STATE UNIVERSITY School of Earth and Environmental Sciences AUGUST 2011 To the Faculty of Washington State University: The members of the Committee appointed to examine the dissertation of SARATH PARAKRAMA WELIGAMAGE find it satisfactory and recommend that it be accepted. ___________________________________ Keith A. Blatner, Ph.D., Chair ___________________________________ C. Richard Shumway, Ph.D. ___________________________________ Jill J. McCluskey, Ph.D. ii ACKNOWLEDGMENT Earning a PhD from WSU fulfills a long held aspiration in my life to earn a doctorate from a US university. I thank all those who have contributed to my achieving this goal at Washington State University. Frank Rijsberman, Director General (2001-2007) of the International Water Management Institute (IWWI), was the key person behind meeting my aspiration to earn a PhD. His vision and passion for capacity building of scientific manpower in the South led to the initiation of the IWMI’s program for capacity building that supported my dissertation research. Frank also authorized the initial support for my PhD program. I thank Frank’s successor Colin Chartres, and David Molden, Interim Director General for continued support to me. At WSU, my major professor Keith Blatner was the key person behind fulfilling my goals. In addition to his unmatched knowledge spanning across many disciplines, Keith was a constant source of support and I also appreciate his compassion and empathy. I thank Richard Shumway for helping me fulfill my academic aspirations at a very high level. -
Evolution of China-Sri Lanka Relations
Evolution of China-Sri Lanka Relations Ms. Gunjan Singh’s research interests include international relations, developments in China and space security. She has pursued her scholarship with various well known think tanks and has authored as well as edited many papers for national and international journals. Presently, she is an Associate Fellow at the VIF, New Delhi. — 2 — Evolution of China-Sri Lanka Relations Evolution of China-Sri Lanka Relations Introduction Over the last ten years China has been paying renewed attention to its ties with Sri Lanka. There has been a large rise in Chinese investments in various projects in Sri Lanka. Beijing has also diplomatically supported Colombo on various issues, especially on charges of human rights violations. In return, Sri Lanka has played an important role in helping China enhance its influence and prestige in the South Asian region. Notably, since taking over as president, Xi Jinping has accorded special focus to this relationship. Xi visited Sri Lanka in September 2014, the first visit by any Chinese President, in 28 years.1 A study of the growing Chinese involvement in Sri Lanka could be divided into two phases. The first would roughly coincide with the end of the Eelam War in May 2009 under President Rajapaksa, to the end of 2014. The next phase would constitute the period from January 2015 when Rajapaksa lost the election and Sirisena assumed the presidency, to till date. The period under Rajapaksa was marked by major initiatives to strengthen the relationship with China. The warmth between China and Sri Lanka grew after 2009 because China was one of the few countries that continued to supply arms and defence equipment to the Sri Lankan Army during its war against the Liberation Tigers of Tamil Eelam (LTTE). -
Water Balance Variability Across Sri Lanka for Assessing Agricultural and Environmental Water Use W.G.M
Agricultural Water Management 58 (2003) 171±192 Water balance variability across Sri Lanka for assessing agricultural and environmental water use W.G.M. Bastiaanssena,*, L. Chandrapalab aInternational Water Management Institute (IWMI), P.O. Box 2075, Colombo, Sri Lanka bDepartment of Meteorology, 383 Bauddaloka Mawatha, Colombo 7, Sri Lanka Abstract This paper describes a new procedure for hydrological data collection and assessment of agricultural and environmental water use using public domain satellite data. The variability of the annual water balance for Sri Lanka is estimated using observed rainfall and remotely sensed actual evaporation rates at a 1 km grid resolution. The Surface Energy Balance Algorithm for Land (SEBAL) has been used to assess the actual evaporation and storage changes in the root zone on a 10- day basis. The water balance was closed with a runoff component and a remainder term. Evaporation and runoff estimates were veri®ed against ground measurements using scintillometry and gauge readings respectively. The annual water balance for each of the 103 river basins of Sri Lanka is presented. The remainder term appeared to be less than 10% of the rainfall, which implies that the water balance is suf®ciently understood for policy and decision making. Access to water balance data is necessary as input into water accounting procedures, which simply describe the water status in hydrological systems (e.g. nation wide, river basin, irrigation scheme). The results show that the irrigation sector uses not more than 7% of the net water in¯ow. The total agricultural water use and the environmental systems usage is 15 and 51%, respectively of the net water in¯ow. -
Environmental and Social Values of River Water: Examples from the Menik Ganga, Sri Lanka
Q:\2004 projects\IKG Services Unit Templates\IWMI Working Papers\WP Cover_with Specs A4.ai Spread size: A3 (420 x 297 mm)Paper size: A4 (297 x 210 inches) when spread is folded onceA 10p0 C WORKING PAPER 121 Environmental and Social A. Working paper numberNewsGoth BT, 18pt. Bold, in Values of River Water: 100% Black B. Country series no.NewsGoth BT Light, 14pt., 85% Examples from the Menik condensed, in 100% Black Ganga, Sri Lanka C. Paper titleNewsGoth BT 32pt. (can be smaller to be B 28pt. if the title is longer) on 42 (leading), 85% condensed, left aligned, in 100% Pantone 2935 4p0 D. Sub titleNewsGoth BT Condensed, 24pt. on 34 Priyanka Dissanayake and Vladimir Smakhtin (leading), left aligned, in 100% Black H E. Name(s) of authorsNewsGoth BT Roman, 12pt. on 16 (leading) 90% condensed, left aligned, top margin aligned with the top margin of the photograph, in 4p0 100% Black D F. Other logos (if any)Aligned with IWMI logo (bottom) G. IWMI and Future Harvest logosPlaced on the vertical band Postal Address: P O Box 2075 E Colombo Sri Lanka H. BackgroundPMS (Pantone) 134 C, bleed Location: 127, Sunil Mawatha 25p6 Max. text area Pelawatta Battaramulla 2p0 1p6 Sri Lanka Tel: +94-11 2880000 G Fax: +94-11 2786854 E-mail: [email protected] F Website: 2p0 http://www.iwmi.org SM International International Water Management IWMI isaFuture Harvest Center Water Management Institute supportedby the CGIAR ISBN: 978-92-9090-674-2 Institute 3p0 K PANTONE 2935 C PANTONE 134 C Working Paper 121 Environmental and Social Values of River Water: Examples from the Menik Ganga, Sri Lanka Priyanka Dissanayake and Vladimir Smakhtin International Water Management Institute IWMI receives its principal funding from 58 governments, private foundations, and international and regional organizations known as the Consultative Group on International Agricultural Research (CGIAR). -
River Basins
APPENDIX I.I 122 River Basins Basin No Name of Basin Catchment Basin No. Name of Basin Catchment Area Sq. Km. Area Sq. Km 1. Kelani Ganga 2278 53. Miyangolla Ela 225 2. Bolgoda Lake 374 54. Maduru Oya 1541 3. Kaluganga 2688 55. Pulliyanpotha Aru 52 4. Bemota Ganga 6622 56. Kirimechi Odai 77 5. Madu Ganga 59 57. Bodigoda Aru 164 6. Madampe Lake 90 58. Mandan Aru 13 7. Telwatte Ganga 51 59. Makarachchi Aru 37 8. Ratgama Lake 10 60. Mahaweli Ganga 10327 9. Gin Ganga 922 61. Kantalai Basin Per Ara 445- 10. Koggala Lake 64 62. Panna Oya 69 11. Polwatta Ganga 233 12. Nilwala Ganga 960 63. Palampotta Aru 143 13. Sinimodara Oya 38 64. Pankulam Ara 382 14. Kirama Oya 223 65. Kanchikamban Aru 205 15. Rekawa Oya 755 66. Palakutti A/u 20 16. Uruhokke Oya 348 67. Yan Oya 1520 17. Kachigala Ara 220 68. Mee Oya 90 18. Walawe Ganga 2442 69. Ma Oya 1024 19. Karagan Oya 58 70. Churian A/u 74 20. Malala Oya 399 71. Chavar Aru 31 21. Embilikala Oya 59 72. Palladi Aru 61 22. Kirindi Oya 1165 73. Nay Ara 187 23. Bambawe Ara 79 74. Kodalikallu Aru 74 24. Mahasilawa Oya 13 75. Per Ara 374 25. Butawa Oya 38 76. Pali Aru 84 26. Menik Ganga 1272 27. Katupila Aru 86 77. Muruthapilly Aru 41 28. Kuranda Ara 131 78. Thoravi! Aru 90 29. Namadagas Ara 46 79. Piramenthal Aru 82 30. Karambe Ara 46 80. Nethali Aru 120 31. -
Proceedings of the First Young Water Professionals Symposium
Proceedings of the First Young Water Professionals Symposium 22nd and 23rd November 2012 Galadari Hotel, Colombo Organized by Sri Lanka Water Partnership (Lanka Jalani) In association with International Water Management Institute (IWMI) and Unilever-Pureit i ISBN 978-955-4784-00-0 ii Table of Contents Page Abbreviations iv Foreword v Symposium Organization vi Report on Proceedings 1 Papers presented at Technical Sessions 12 Papers accepted but not presented 175 Annexes 1) Technical Sessions - Themes and aspects covered 215 2) Technical Sessions - Programme Agenda 216 3) Technical Sessions -Presentations - Summary of Discussion 219 4) List of Participants 227 iii Abbreviations CBO - Community Based Organization CKD-U - Chronic Kidney Diseases, Unknown COD - Chemical Oxygen Demand IPCC - Intergovernmental Panel on Climate Change IWMI -International Water Management Institute IWRM -Integrated Water Resources Management NGOs - Non Governmental Organizations NSF - National Science Foundation O&M - Operations and Maintenance PAC - Powdered Activated Carbon R & D - Research and Development SLWP - Sri Lanka Water Partnership SPI - Standard Precipitation Index SWARM - Sustainable Water Resources Management UDDT - Urine Diversion Dry Toilet YWPS - Young Water Professionals Symposium iv Foreword The Young Water Professionals Symposium (YWPS) was an outcome of the efforts of the Sri Lanka Water Partnership (SLWP) Programme Committee which in early 2012 had identified the limited opportunities available to young water professionals to contribute to water sector issues as a constraint to the development of the sector. The YWPS was planned as a platform where these mid- career water professionals could make their voices heard and present innovative solutions that could be adopted to better plan and manage water resources in Sri Lanka. -
GEOGRAPHY Grade 11 (For Grade 11, Commencing from 2008)
GEOGRAPHY Grade 11 (for Grade 11, commencing from 2008) Teachers' Instructional Manual Department of Social Sciences Faculty of Languages, Humanities and Social Sciences National Institute of Education Maharagama. 2008 i Geography Grade 11 Teachers’ Instructional Manual © National Institute of Education First Print in 2007 Faculty of Languages, Humanities and Social Sciences Department of Social Science National Institute of Education Printing: The Press, National Institute of Education, Maharagama. ii Forward Being the first revision of the Curriculum for the new millenium, this could be regarded as an approach to overcome a few problems in the school system existing at present. This curriculum is planned with the aim of avoiding individual and social weaknesses as well as in the way of thinking that the present day youth are confronted. When considering the system of education in Asia, Sri Lanka was in the forefront in the field of education a few years back. But at present the countries in Asia have advanced over Sri Lanka. Taking decisions based on the existing system and presenting the same repeatedly without a new vision is one reason for this backwardness. The officers of the National Institute of Education have taken courage to revise the curriculum with a new vision to overcome this situation. The objectives of the New Curriculum have been designed to enable the pupil population to develop their competencies by way of new knowledge through exploration based on their existing knowledge. A perfectly new vision in the teachers’ role is essential for this task. In place of the existing teacher-centred method, a pupil-centred method based on activities and competencies is expected from this new educa- tional process in which teachers should be prepared to face challenges. -
Behavior and Ecology 0 the Asiatic Elephant in Southeastern Ceylon A
GEORGE M. McKA Behavior and Ecology 0 the Asiatic Elephant in Southeastern Ceylon A SMITHSONIAN CONTRIBUTIONS TO ZOOLOGY NUMBER 125 SERIAL PUBLICATIONS OF THE SMITHSONIAN INSTITUTION The emphasis upon publications as a means of diffusing knowledge was expressed by the first Secretary of the Smithsonian Institution. In his formal plan for the Insti- tution, Joseph Henry articulated a program that included the following statement: "It is proposed to publish a series of reports, giving an account of the new discoveries in science, and of the changes made from year to year in all branches of knowledge.'* This keynote of basic research has been adhered to over the years in the issuance of thousands of titles in serial publications under the Smithsonian imprint, com- mencing with Smithsonian Contributions to Knowledge in 1848 and continuing with the following active series: Smithsonian Annals of Flight Smithsonian Contributions to Anthropology Smithsonian Contributions to Astrophysics Smithsonian Contributions to Botany Smithsonian Contributions to the Earth Sciences Smithsonian Contributions to Paleobiology Smithsonian Contributiotis to Zoology Smithsonian Studies in History and Technology In these series, the Institution publishes original articles and monographs dealing with the research and collections of its several museums and offices and of profes- sional colleagues at other institutions of learning. These papers report newly acquired facts, synoptic interpretations of data, or original theory in specialized fields. These publications are distributed by subscription to libraries, laboratories, and other in- terested institutions and specialists throughout the world. Individual copies may be obtained from the Smithsonian Institution Press as long as stocks are available. S. DILLON RIPLEY Secretary Smithsonian Institution SMITHSONIAN CONTRIBUTIONS TO ZOOLOGY NUMBER 125 George M. -
List of Rivers of Sri Lanka
Sl. No Name Length Source Drainage Location of mouth (Mahaweli River 335 km (208 mi) Kotmale Trincomalee 08°27′34″N 81°13′46″E / 8.45944°N 81.22944°E / 8.45944; 81.22944 (Mahaweli River 1 (Malvathu River 164 km (102 mi) Dambulla Vankalai 08°48′08″N 79°55′40″E / 8.80222°N 79.92778°E / 8.80222; 79.92778 (Malvathu River 2 (Kala Oya 148 km (92 mi) Dambulla Wilpattu 08°17′41″N 79°50′23″E / 8.29472°N 79.83972°E / 8.29472; 79.83972 (Kala Oya 3 (Kelani River 145 km (90 mi) Horton Plains Colombo 06°58′44″N 79°52′12″E / 6.97889°N 79.87000°E / 6.97889; 79.87000 (Kelani River 4 (Yan Oya 142 km (88 mi) Ritigala Pulmoddai 08°55′04″N 81°00′58″E / 8.91778°N 81.01611°E / 8.91778; 81.01611 (Yan Oya 5 (Deduru Oya 142 km (88 mi) Kurunegala Chilaw 07°36′50″N 79°48′12″E / 7.61389°N 79.80333°E / 7.61389; 79.80333 (Deduru Oya 6 (Walawe River 138 km (86 mi) Balangoda Ambalantota 06°06′19″N 81°00′57″E / 6.10528°N 81.01583°E / 6.10528; 81.01583 (Walawe River 7 (Maduru Oya 135 km (84 mi) Maduru Oya Kalkudah 07°56′24″N 81°33′05″E / 7.94000°N 81.55139°E / 7.94000; 81.55139 (Maduru Oya 8 (Maha Oya 134 km (83 mi) Hakurugammana Negombo 07°16′21″N 79°50′34″E / 7.27250°N 79.84278°E / 7.27250; 79.84278 (Maha Oya 9 (Kalu Ganga 129 km (80 mi) Adam's Peak Kalutara 06°34′10″N 79°57′44″E / 6.56944°N 79.96222°E / 6.56944; 79.96222 (Kalu Ganga 10 (Kirindi Oya 117 km (73 mi) Bandarawela Bundala 06°11′39″N 81°17′34″E / 6.19417°N 81.29278°E / 6.19417; 81.29278 (Kirindi Oya 11 (Kumbukkan Oya 116 km (72 mi) Dombagahawela Arugam Bay 06°48′36″N