Abstract
Storm flow source component contributions were assessed during autumn recharge in Mediterranean farmed conditions (Hérault Valley, southern France). Four successive flood hydrographs have been decomposed using water electrical conductivity as a tracer in a 0.91-km 2 catchment covered by vineyards. In contrast to forested mountain catchments, surface runoff contribution (event water mainly) to storm flow is always predominant (> 60%). Groundwater contributions responsible for water regime change of the main catchwater ditch were also detected and quantified.
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