The Concept of Ecological Flow

  • Kalyan Rudra
Part of the Geography of the Physical Environment book series (GEOPHY)


The importance of flowing water in the ecosystem was realized when the issues of dying rivers and the imminent threat to freshwater supply came to fore. Subsequently, there were efforts to understand the limit of maximum permissible withdrawal of water from a river so that its hydro-ecological functions are not drastically hampered. The term ecological flow means not only the quantity but also the quality of flowing water and also its cultural and aesthetic value. It identifies the required quantity, quality and distribution of flow patterns from the source to mouth of a river, preserving the life in and around the channels. The drastic reduction in flow in most of the river has the ecological cost. The already identifiable indicators of the ecological damage are longitudinal disconnectivity of the flowing channel, the falling level of the groundwater table and the loss of biodiversity. The greater common good of the human society does not lie in the abuse of the rivers; the future of civilization depends on fixing critical limits for the exploitation of water sources and allowing the rivers to flow.


  1. Amarasinghe UA, Shah T, Turral H, Anand BK (2005) India’s water future to 2025–2050: business-as-usual scenario and deviations. Research Report 123, International Water Management InstituteGoogle Scholar
  2. Arthington AH, Pusey BJ (2003) Flow restoration and protection in Australian rivers. River Res Appl 19(5–6):377–395CrossRefGoogle Scholar
  3. Bandyopadhyay J (2011) Deciphering environmental flows. Seminar (October Issue) 626:50–53Google Scholar
  4. Closs G, Downes B, Boulton A (2004) Freshwater ecology. Blackwell Sc Ltd.Google Scholar
  5. Collocott Thomas Charles, Dobson Alan Binaloss (1974) Chambers dictionary of science and technology: L-Z, vol 2. W. and R, ChambersGoogle Scholar
  6. Dutta Ritwick (2009) The unquiet river—an overview of select decisions of the courts on the River Yamuna. PEACE Institute Charitable Trust, DelhiGoogle Scholar
  7. Dyson M, Bergkemp G, Scanlon J (eds) (2003) The essentials of environmental flows. In: Water and nature initiative, international union for conservation of nature and natural resources. Accessed 30 Dec 2011
  8. Gleick Peter H (1993) Water in crisis: a guide to world’s fresh water resources. OUP, OxfordGoogle Scholar
  9. Gordon ND, McMahon TA, Finlayson BL, Gippel CJ, Nathan RJ (2004) Stream hydrology: an introduction for ecologists, 2nd edn. Wiley, ChichesterGoogle Scholar
  10. Homa ES, Vogel RM, Smith MP, Apse CD, Huber-Lee A, Sieber J (2005) An optimization approach for balancing human and ecological flow needs. In: Proceedings of the EWRI. World Water and Environmental Resources Congress, ASCE, Anchorage, AlaskaGoogle Scholar
  11. Hughes DA, Münster F (2000) Hydrological information and techniques to support the determination of the water quantity component of the ecological reserve. Water Res Comm Report TT 137/00, 91 p. Pretoria, South AfricaGoogle Scholar
  12. Hughes DA, Hannart P (2003) A desktop model used to provide an initial estimate of the ecological in stream flow requirements of rivers in South Africa. J Hydrol 270:167–181CrossRefGoogle Scholar
  13. Iyer RR (2005) the notion of environmental flows: a caution. In: NIE/IWMI workshop on environmental flows, 23–24 March. New DelhiGoogle Scholar
  14. Jones G, Hillman T, Kingsford R, McMahon T, Walker K, Arthington A, Whittington J, Cartwright S (2002) Independent report of the expert reference panel on environmental flows and water quality requirements for the River Murray system. In: Report prepared for the environmental flows and water quality objectives for the River Murray project board. URL: Accessed 30 Dec 2011
  15. Jowett IG (1997) Instream flow methods: a comparison of approaches. Regulated Rivers Res Manage 13:115–127CrossRefGoogle Scholar
  16. Karr JR, Dudley DR (1981) Ecological perspectives on water quality goals. Environ Manage 5:55–68CrossRefGoogle Scholar
  17. Land and Water Australia, Hamstead M (2007) Defining ‘environmental flows’, fact sheet for land and water Australia.
  18. McLusky DS, Elliot M (2004) The estuarine ecology: ecology, threats and management. Oxford University Press, UKCrossRefGoogle Scholar
  19. Minshall GW (1984) Aquatic insect-substratum relationships. In: Resh VH, Rosenberg DM (eds) The ecology of aquatic insects. Praeger Publishers, New York, pp 358–400Google Scholar
  20. N.C. Environmental Review Commission (2009) Report of the water allocation study. North Caroline Environmental Review Commission, North Carolina, USA. URL: Accessed 03 Jan 2012
  21. NCIWRD (1999) Integrated water resource development—a plan for action. National Council of Integrated Water Resource Development, Government of India, New DelhiGoogle Scholar
  22. Petts GE (1996) Water allocation to protect river ecosystems. Regulated Rivers Res Manage 12:353–365CrossRefGoogle Scholar
  23. Silk N, McDonald J, Wigington R (2000) Turning in stream flow water rights upside down. Rivers 7(4):298–313Google Scholar
  24. Sinha RK, Prasad K (2005, Mar) Environmental flows vis-à-vis biodiversity: the current scenario in the River Ganga. Abstracts of the NIE/IWMI workshop on environmental flows. New Delhi, p. 13Google Scholar
  25. Smakhtin VU, Revenga C, Döll P (2004) Taking into account environmental water requirements in global scale water resources assessments. Research report of the CGIAR comprehensive assessment programme of water use in agriculture. International Water Management Institute, Colombo, Sri Lanka, 24 p (IWMI Comprehensive Assessment Research Report 2)Google Scholar
  26. Smakhtin V, Anputhas M (2006) Environmental flow requirements of Indian River Basins. Re-search Report No. 107. International Water Management Institute, ColomboGoogle Scholar
  27. Smakhtin V et al (2007) Developing procedures for assessment of ecological status of Indian River Basins in the context of environmental water requirements. Research Report 114. International Water management InstituteGoogle Scholar
  28. Statzner B, Gore JA, Resh VH (1988) Hydraulic stream ecology: observed patterns and potential applications. J North Am Benthol Soc 7:307–360CrossRefGoogle Scholar
  29. Tare V et al (2015) Ganga River Basin management plan-2015.
  30. Ward JV, Stanford JA (1983) The intermediate-disturbance hypothesis: an explanation for biotic diversity patters in lotic ecosystems. In: Fotaine TD III, Bartell SM (eds) Dynamics of lotic ecosystems. Ann Arbor Press, Ann Arbor, Michigan, pp 347–356Google Scholar
  31. WWF India (2012) Report on assessment of environmental flows for the Upper Ganga Basin. World Wildlife Fund India, New Delhi.

Copyright information

© Springer International Publishing AG, part of Springer Nature 2018

Authors and Affiliations

  1. 1.Environment DepartmentWest Bengal Pollution Control BoardKolkataIndia

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