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A pragmatic and simple approach for estimating the groundwater recharge of karst aquifers in mountainous regions by extrapolation of the hydrological regimes of gauged and well‐documented systems is presented. Specific discharge rates are derived using annual precipitation and spring measurements by taking into account catchment size and elevation, which are assumed to be the dominant factors. Reference sites with high data reliability are used for calibration and regional extrapolation. This is performed with normalized values employing spatial precipitation deviations and correlation with the elevation of the catchment areas. A tiered step procedure provides minimum and maximum normalized gradients for the relationship between recharge quantity and elevation for karst regions. The normalized recharge can therefore be obtained and extrapolated for any location using the spatial precipitation variability to provide an estimate of annual groundwater recharge.
Aquifer recharge; Karst groundwater; Precipitation; Discharge; Switzerland
Digital Object Identifier (DOI)
Malard, Arnauld; Sinreich, Michael; and Jeannin, Pierre-Yves, "A novel approach for estimating karst groundwater recharge in mountainous regions and its application in Switzerland" (2016). KIP Articles. 6775.