Hyporheic zone

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The hyporheic zone is a region beneath and alongside a stream bed, where there is mixing of shallow groundwater and surface water. The flow dynamics and behavior in this zone (termed hyporheic flow or underflow) is recognized to be important for surface water/groundwater interactions, as well as fish spawning, among other processes. The hyporheic zone can be actively managed in urban streams for water quality and habitat improvement.[1]

The assemblage of organisms which inhabits this zone are called hyporheos.

The term hyporheic was originally coined by Traian Orghidan[2] in 1959 by combining two Greek words: hypo (below) and rheos (flow).


  1. ^ Lawrence, J.E.; M. Skold, F.A. Hussain, D. Silverman, V.H. Resh, D.L. Sedlak, R.G. Luthy, and J.E. McCray (14 August 2013). "Hyporheic Zone in Urban Streams: A Review and Opportunities for Enhancing Water Quality and Improving Aquatic Habitat by Active Management". Environmental Engineering Science 47: 480–501. doi:10.1089/ees.2012.0235. Retrieved 10 November 2013. 
  2. ^ Orghidan, T. (1959). "Ein neuer Lebensraum des unterirdischen Wassers: Der hyporheische Biotop". Archiv für Hydrobilogie 55: 392–414. 

External links[edit]

  • The Hyporheic Network is a knowledge-transfer network on groundwater - surface water interactions and hyporheic zone processes. It provides a wealth of information and links to other resources on this topic.