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Deep groundwater flow as the main pathway for chemical outputs in a small headwater watershed (Mule Hole,South India) |
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| Authors: | JC Maréchal J Riotte C Lagane S Subramanian C Kumar L Ruiz S Audry MRR Varma JJ Braun |
| Institution: | 1. Indo-French Cell for Water Sciences, IISc-IRD Joint Laboratory, Indian Institute of Science, 560 012 Bangalore, India;2. GET, Université de Toulouse, CNRS, IRD, OMP, 14 avenue Edouard Belin, 31400 Toulouse, France;3. Department of Civil Engineering, Indian Institute of Science, 560 012, Bangalore, India;4. INRA Agrocampus Rennes, UMR, Sol-Agronomie-Spatialisation, 65 rue de St Brieuc, CS 82415, 35042 Rennes, France |
| Abstract: | This study examined the water and chemical cycles of a small forested head catchment. Application of Cl? mass balance lead to the identification of a groundwater baseflow located into the active zone of the crystalline aquifer, below the weir. These findings indicate that groundwater contributes to a large part of chemical outputs at the catchment scale. This study shows that groundwater should not be ignored in most small watershed studies because this flow path and associated solutes are strongly significant for chemical balance assessment. |
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