Articles | Volume 24, issue 7
https://doi.org/10.5194/hess-24-3583-2020
https://doi.org/10.5194/hess-24-3583-2020
Research article
 | 
16 Jul 2020
Research article |  | 16 Jul 2020

Irrigation return flow causing a nitrate hotspot and denitrification imprints in groundwater at Tinwald, New Zealand

Michael Kilgour Stewart and Philippa Lauren Aitchison-Earl

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AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment
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AR: Author's response | RR: Referee report | ED: Editor decision
ED: Publish subject to revisions (further review by editor and referees) (16 May 2020) by Brian Berkowitz
AR by Michael Stewart on behalf of the Authors (05 Jun 2020)  Author's response   Manuscript 
ED: Publish as is (20 Jun 2020) by Brian Berkowitz
AR by Michael Stewart on behalf of the Authors (23 Jun 2020)
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Short summary
This paper is important for water resource management, being concerned with irrigation return flow causing hotspots in nitrate concentrations in groundwater and denitrification imprints where nitrate concentrations are reduced by denitrification although the dissolved oxygen concentration is not low. The work is highly significant for modelling of nitrate transport through soil–groundwater systems, for understanding denitrification processes, and for managing fertilizer application to land.