Nondimensional Methods to Classify the Tidal Inlets Along the Karnataka Coastline, West Coast of India

  • N. Amaranatha ReddyEmail author
  • Vikas Mendi
  • Jaya Kumar Seelam
  • Subba Rao
Conference paper
Part of the Lecture Notes in Civil Engineering book series (LNCE, volume 23)


This classification of tidal inlets is essential to maintain the stability of the inlets as well as to study the changing patterns of tidal inlets in India. Tidal inlets around the world have been classified as either wave-dominated or tide-dominated or river-dominated, since the 1970s. Tidal inlet classification for 471 inlets along the coast of India was carried out by Vikas M et al., based on wave and tide information. But only 30 inlets were considered for river-based classification due to lack of discharge information. In order to consider the river-based classification, the river flood discharge was estimated using Synthetic Unit Hydrograph (SUH) methods for Karnataka coast. In this study, 29 tidal inlets along the coast of Karnataka are selected for the classification based on river discharge. The classification has been done in two aspects; without considering wave period \( \left( {{\text{i.e.}} \frac{{Q_{tide} }}{{\sqrt {{\text{gH}}^{5} } }}\,{\text{versus}}\, \frac{{Q_{f} }}{{\sqrt {{\text{gH}}^{5} } }} } \right) \) and by considering wave period \( \left( {{\text{i.e.}} \frac{{{\text{Q}}_{tide} }}{{{\text{g}}^{1.75} {\text{H}}^{1.25} {\text{T}}^{2.5} }} \,{\text{versus}}\, \frac{{{\text{Q}}_{f} }}{{{\text{g}}^{1.75} {\text{H}}^{1.25} {\text{T}}^{2.5} }}} \right) \) where Qtide is peak tidal discharge, Qf is river discharge and H is wave height. The results obtained are validated with hydrological and geomorphological classifications and the dominant forces over the dynamics of the inlets are determined.


Tidal inlets Nondimensional classification Flood discharge 


  1. 1.
    Burgess R et al (2004) Classification framework for coastal systems 600/R-04/061. Office of Research and Development, US EPA, p 66Google Scholar
  2. 2.
    Carter RWG (1989) Coastal environments: an introduction to the physical ecological and cultural systems of coastlines. Academic Press, London, p 617Google Scholar
  3. 3.
    de Vriend HJ, Dronkers J, Stive MJF, van Dongeren A, Wang ZB (1999) Coastal inlets and tidal basins. Lecture Notes, TU Delft, DelftGoogle Scholar
  4. 4.
    Duck RW, da Silva JF (2012) Coastal lagoons and their evolution: a hydromorphological perspective. Estuar Coast Shelf Sci 110:2–14CrossRefGoogle Scholar
  5. 5.
    Hayes MO (1979) Barrier island morphology as a function of tidal and wave regime. In: Leatherman SP (ed) Barrier islands from the Gulf of St. Lawrence to the Gulf of Mexico. Academic Press, New YorkGoogle Scholar
  6. 6.
    Heap A et al (2001) Australian estuaries & coastal waterways: a geoscience perspective for improved and integrated resource management. Report to the national land and water resources audit, theme 7: ecosystem health. Australian Geological Survey Organisation, p 188Google Scholar
  7. 7.
    Isla FI (1995) Coastal lagoons. In: Periloo GME (ed) Geomorphology and sedimentology of estuaries. Elsevier, Amsterdam, pp 241–272CrossRefGoogle Scholar
  8. 8.
    Kjerfve B (1994) Coastal lagoon processes. Elsevier oceanography series, vol 60. Elsevier, Amsterdam, p 576CrossRefGoogle Scholar
  9. 9.
    Nielsen P (2009) Coastal and estuarine processes. Advanced series on ocean engineering. World Scientific, p 343Google Scholar
  10. 10.
    Reddy NA, Vikas M, Jaya Kumar S, Rao S (2015) Classification of tidal inlets along the central east coast of India. In: 8th international conference on Asian and Pacific coast (APAC-2015). Department of Ocean Engineering, IIT Madras, IndiaCrossRefGoogle Scholar
  11. 11.
    Reddy NA, Jaya Kumar S, Rao S, Nagaraj MK (2018) Flood estimation at ungauged catchments of western catchments of Karnataka, West coast of India. ISH J Hydraul EngGoogle Scholar
  12. 12.
    Roper T et al (2011) Assessing the condition of estuaries and coastal lake ecosystems in NSW. Estuaries and coastal lakes. Office of Environment and Heritage, p 270Google Scholar
  13. 13.
    Roy PS et al (2001) Structure and function of south-east Australian estuaries. Estuar Coast Shelf Sci 53:351–384CrossRefGoogle Scholar
  14. 14.
    Saintilan N (2004) Relationships between estuarine geomorphology, wetland extent and fish landings in New South Wales estuaries. Estuar Coast Shelf Sci 61:591–601CrossRefGoogle Scholar
  15. 15.
    Takeda I, Sunamura T (1982) Formation and height of berms. Trans Japan Geomorphol Union 3:145–157Google Scholar
  16. 16.
    Vikas M (2015) Classification of tidal inlets along the Indian coast. M.Tech thesis, Department of Applied Mechanics and Hydraulics, NITK, Karnataka, IndiaGoogle Scholar
  17. 17.
    Vu TTT (2013) Aspects of inlet geometry and dynamics. PhD thesis, The University of Queensland, AustraliaGoogle Scholar

Copyright information

© Springer Nature Singapore Pte Ltd. 2019

Authors and Affiliations

  • N. Amaranatha Reddy
    • 1
    • 2
    Email author
  • Vikas Mendi
    • 1
  • Jaya Kumar Seelam
    • 3
  • Subba Rao
    • 1
  1. 1.National Institute of Technology Karnataka, SurathkalMangaloreIndia
  2. 2.Madanapalle Institute of Technology and ScienceMadanapalleIndia
  3. 3.CSIR-National Institute of OceanographyDona PaulaIndia

Personalised recommendations