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Ms. Devki Dewanga Perera


Faculty of Engineering | Civil Engineering

Career Summary

  1. Lecturer at Sri Lanka Institute of Information Technology (2023 – Present)
  2. Research Assistant at Sri Lanka Institute of Information Technology (2021-2022)
  3. Instructor at Sri Lanka Institute of Information Technology (2020-2021)
  4. Internship at NCD Consultants (Pvt) Ltd (2018)
  5. Internship at Sripalie Contractors (Pvt) Ltd (2017)
  6. Freelance Engineer working for different projects for different companies (2021-to date)


  • Sri Lanka Institute of Information Technology (SLIIT)
    • Master of Philosophy in Civil Engineering (Completed and subject to senate approval)
  • Curtin University, Bentley, WA, Australia (2015 - 2019) *
    • BEng(Honours) in Civil and Construction Engineering
    • Dean’s list 1st year – 1st semester   
    • Graduated with Upper Second Class Honours  (*Delivered at Sri Lanka Institute of Information Technology. The program delivered at SLIIT is fully accredited by Engineers Australia)
  • Lyceum International School (Nugegoda) (2011 - 2015)
    • Cambridge Advanced Level Examinations 2015 (2A* and A)
    • Cambridge Ordinary Level Examinations 2013 (6A* and 2A)


  • Special Award of Recognition for Research Performance in the category of publishing highly rated scientific research work in a journal in the top 10% of Scopus CiteScore Index during the year 2021- Sri Lanka Institute of Information Technology, Faculty of Graduate Studies and Research
  • Fully funded Masters scholarship by grants (FGSR-RG-2020-09, FGSR-RG-2021-12, FGSR-RG-2022-03) and complete waive off of tuition fees from the Faculty of Graduate Studies and Research of Sri Lanka Institute of Information Technology
  • Cambridge Awards - Island 3rd ranking for Best across 8 subjects in Ordinary Levels


Research Interests and Memberships

Research Interests

  • Hydrological modelling
  • Ecohydraulics
  • Freshwater
  • Water quality



  • Engineers Australia (Graduate member)
  • Sri Lanka Association for the Advancement of Science (Life member)
  • International Association for Hydro-Environment Engineering and Research (Member)

Ongoing Research

  • Perera, M. D. D., & Gomes, P. I. A. Classification, subsurface sediment physical properties and bank stability of Ephemeral Streams of a Tropical climate. (Under preparation).
  • Perera, M. D. D., & Gomes, P. I. A., Investigation of the factors affecting water quality of Ephemeral streams of a dry zone in Sri Lanka. (Under preparation).

My Publications

Journal Publications

  • Perera, M. D. D, & Gomes, P. I. A.  " Do sediments of ephemeral and perennial streams show different impacts on water quality when subjected to the same drying conditions?. "  Ecohydrology,      2022,        
  • Gomes, P. I. A., Samararatne, S., Wai, O. W. H., & Perera, M. D. D.  " Impact of increased instream heterogeneity by deflectors on the removal of hydrogen sulphide of regulated urban waterwaysA laboratory study. "  Water Environment Research,      2020,        
  • R. M. L. S. Bandara, M. D. D. Perera, Pattiyage I. A. Gomes, Xu-Feng Yan  " Profiling microplastic pollution in surface water bodies in the most urbanized city of Sri Lanka and its suburbs to understand the underlying factors "  Water, Air, & Soil Pollution.,      Not Published,        

Journal Publications Under Review

  • Perera, M. D. D., Gomes, P. I. A. & Zhao, W.  " Water quality management of non-perennial streams with the control of allochthonous energy (leaf litter) "  International Journal of Water,        Under Review
  • Gomes, P. I. A., Khaniya, B., WHO Wai, W. H. O., & Perera, M. D. D.  " Bio-physical effects on infiltration, channel roughness and discharge: a comparative study involving ephemeral and perennial streams "  Water Resource Research ,        Under Review

Conference Proceedings

  • Perera, M. D. D., & Gomes, P. I. A.   Hydrologic modelling of discontinuous ephemeral streams using HEC-HMS.  in SLAAS 79th Annual Scientific Sessions ,  year 2022,  Colombo, Sri Lanka ,        Perera, M. D. D., & Gomes, P. I. A. ,  
  • Perera, M. D. D., Madhushani T. M. C. I., & Gomes P. I. A.   Importance of leaving intermittent rivers and ephemeral streams (IRES) untouched in a sustainable built environmen  in International Conference On Sustainable Built Environment,  year 2022,  Kandy, Sri Lanka,          
  • Perera, M. D. D., & Gomes, P. I. A.   Ephemeral and perennial streams during drying; an investigation of water quality and role of sediments.  in SLAAS 78th Annual Scientific Sessions,  year 2021,  Colombo, Sri Lanka,        Perera, M. D. D., & Gomes, P. I. A. ,  
  • Gomes, P. I. A., Sanjula, T.V., & Perera, M. D. D.   Identification and quantification of ecosystem goods and services and monetary value of non-perennial (ephemeral and intermittent) streams in dry zone Sri Lanka.  in IESL 115th Annual Sessions ,  year Undated,            

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