Quantification and regionalization of groundwater–surface water interaction along an alluvial stream

Jesper Heidemann Langhoff, Keld R. Rasmussen, Steen Christensen

Publikation: Bidrag til tidsskriftTidsskriftsartikelForskningpeer review

Abstract

In the present study, groundwater seepage to an alluvial stream and two tributary streams was examined at nine field sites using hydrological, geophysical, and geomorphological observations. The data indicate that seepage enters the streams in the following ways: (i) directly through the streambed; (ii) as nearly superficial flow from diffuse discharge areas on the flood plains or; (iii) as a combination of (i) and (ii). At about 40% of the sites more than 50% of seepage flows through the streambed. Moreover, it was found that the ratio C, defined as the width of the wet zone of the flood plain divided by the effective width of the stream, can be used as an indicator of the percentage of water entering the stream directly through the streambed. When C is small streambed seepage is large, while when C is large streambed seepage is small and ground water enters the stream mainly as nearly superficial or over-bank flow from the wet zone.

OriginalsprogEngelsk
TidsskriftJournal of Hydrology
Vol/bind320
Udgave nummer3-4
Sider (fra-til)342-358
Antal sider17
ISSN0022-1694
DOI
StatusUdgivet - 15 apr. 2006
Udgivet eksterntJa

Emneord

  • bæredygtighed
  • ressourcer
  • miljø
  • grundvand
  • overfladevand

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