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Karst–River Interaction, Elaboration of an Indicator of the Karst Hydrological Conditions Applied to the Cèze River (Gard, France)

  • Hervé ChapuisEmail author
  • Jordan Ré-Bahuaud
  • Joël Jolivet
  • Frédéric Paran
  • Didier Graillot
Conference paper
Part of the Advances in Karst Science book series (AKS)

Abstract

In the interest of creating a point of reference allowing to know the hydrological conditions of the karst system and for the purpose of using it as a parameter in a modeling procedure, a Hydric Indicator of the Karst (HIK) was established from the knowledge acquired on the functioning of the karstic hydrosystem of the Cèze. This indicator makes it possible to identify and qualify if at a specific moment “t” the karst is more able to contribute to the flow of the river or on the contrary to infiltrate precipitation water. The HIK is constructed from the data collected at the Ussel spring and the MétéoFrance rain gauge at the karst plateau of Méjannes-le-Clap (Gard, France). Chronic rainfall and discharge measurements from the source include two hydrological cycles. The discharge of the spring is calculated from the recordings of water amounts from autonomous water level probes. These water levels are converted into discharge through a calibration curve drawn for this study. For rain events with at least 4 mm of precipitation, ten parameters on rainfall characteristics and the flow rate of the Ussel spring are analyzed to obtain the HIK. In total, 74 events were analyzed. Finally, this indicator is a relevant entry for the simulation of flow variations in the river within its karst canyon. It is also a relevant tool for institutions which monitor the condition of the karst aquifer and thus can be a useful tool for the management of the aquifer. Our goal was to develop an approach, with which we can calculate and predict, what will be the response at karst spring, if we know current discharge of the Ussel spring and expected amount of rainfall.

Keywords

Karst Hydrological indicator Spring discharges Cèze River 

Notes

Acknowledgements

The authors would like to thank MeteoFrance Company for the precipitation database and Ms Leila ESGAIB SÁNCHEZ for her contribution in reviewing the translation of this article.

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Copyright information

© Springer Nature Switzerland AG 2020

Authors and Affiliations

  • Hervé Chapuis
    • 1
    Email author
  • Jordan Ré-Bahuaud
    • 2
  • Joël Jolivet
    • 3
  • Frédéric Paran
    • 1
  • Didier Graillot
    • 1
  1. 1.UMR EVS 5600, Department Process for Environment and Georesources, Saint-Etienne School of MinesUniversity of LyonSaint-EtienneFrance
  2. 2.UMR EVS 5600University of LyonLyonFrance
  3. 3.UMR 7300 ESPACEUniversity of Nice-Sophia-Antipolis and CNRSNiceFrance

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