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hyporheic

hyporheic

9.9
An area under and beside a stream where river water meets water under the ground
  • noun
  • /ˌhaɪpəˈriːɪk/
  • Specialized
: zona hiporéica
  • As water in the hyporheic zone exchanges with water in the main stream channel, solutes are also exchanged (Runkel et al. 1998).
  • hyporheic zone
  • hyporheic water

Examples

  • The hyporheic zone may also be a source of some nutrients to the water in the main stream channel.

    Academic text (1999)
  • All freshwater bodies are more or less connected to groundwater through the hyporheic zone (the saturated sediments under and laterally adjacent to freshwater bodies where there is active exchange between groundwater and surface water).

    Academic text (2000)
  • We have no information on the importance of hyporheic zones for retaining nutrients in fresh waters.

    Academic text (2007)
  • Orange and red mats occur in flowing water habitats, either in the main channel or in rivulets draining the hyporheic zone at the stream margins.

    Academic text (1999)
  • The rapid exchange rates and the absence of lateral inflows from shallow groundwater result in a substantial lateral extent of the hyporheic zone.

    Academic text (1999)
  • For long streams during low-flow years, water storage in the hyporheic zone can account for a significant portion of the annual meltwater from the glacier (Bomblies 1998, Conovitz et al. 1998).

    Academic text (1999)
  • Therefore, groundwater flow in the dry valleys is probably limited to the near-surface hyporheic zone (the saturated zone adjacent to and under the stream channel) along the margins of stream channels (McKnight et al. 1999).

    Academic text (1999)
  • The hyporheic zone may also be a source of some nutrients to the water in the main stream channel.

  • We have no information on the importance of hyporheic zones for retaining nutrients in fresh waters.

  • As water in the hyporheic zone exchanges with water in the main stream channel, solutes are also exchanged (Runkel et al. 1998).

Surface Forms

hyporheic singular
hyporheics plural

Morphology

hyporheic = rheic (semi-transparent) = hypo + rhe + ic

The structure is regular and the prefix hypo- is clear, but the technical base rheic and the hydrological sense are unlikely to be fully accessible to a general learner.

Etymology

Hyporheic comes from Greek hypo- 'under' and rheo 'flow', so the word points to water flowing beneath the stream. A hyporheic zone is the place under and beside a river where river water and groundwater meet and mix.