Articles | Volume 27, issue 1
https://doi.org/10.5194/hess-27-159-2023
https://doi.org/10.5194/hess-27-159-2023
Technical note
 | 
09 Jan 2023
Technical note |  | 09 Jan 2023

Technical note: Extending the SWAT model to transport chemicals through tile and groundwater flow

Hendrik Rathjens, Jens Kiesel, Michael Winchell, Jeffrey Arnold, and Robin Sur

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Latest update: 19 Jun 2024
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Short summary
The SWAT model can simulate the transport of water-soluble chemicals through the landscape but neglects the transport through groundwater or agricultural tile drains. These transport pathways are, however, important to assess the amount of chemicals in streams. We added this capability to the model, which significantly improved the simulation. The representation of all transport pathways in the model enables watershed managers to develop robust strategies for reducing chemicals in streams.