Groundwater-surface water interactions at wetland interface: advancement in catchment system modelling

Rafiei, Vahid and Nejadhashemi, A. Pouyan and Mushtaq, Shahbaz and Bailey, Ryan T. and An-Vo, Duc-Anh ORCID: https://orcid.org/0000-0001-7528-7139 (2022) Groundwater-surface water interactions at wetland interface: advancement in catchment system modelling. Environmental Modelling and Software, 152:105407. ISSN 1364-8152


Abstract

Wetlands strongly interact with groundwater and surface water, influencing catchment hydrology and altering water quality. Meanwhile, catchment-scale models are typically unable to simulate groundwater-wetland interactions despite the fact that quantifying groundwater-wetland interactions can assist in better identifying locations for wetlands restoration/creation. We modified an integrated groundwater-surface water model (SWAT-MODFLOW-RT3D) to simulate water and nutrient exchange at the wetland interface. Several modifications were applied to the SWAT wetland module, and a spatial linkage was established between the module and the MODFLOW Drain Package to provide bidirectional water and nutrient exchange between groundwater and wetlands. We applied the modified model (SMR-W) to a tropical catchment in northeast Australia and quantified water and nitrate exchange between wetland, groundwater, and surface water for 28 potential locations. This study demonstrates that when groundwater heads are perched above wetlands bed, significant nitrate discharge from aquifers to wetlands occurs, which should be considered during wetland restoration planning.


Statistics for USQ ePrint 48224
Statistics for this ePrint Item
Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Additional Information: Files associated with this item cannot be displayed due to copyright restrictions.
Faculty/School / Institute/Centre: Current - Institute for Life Sciences and the Environment - Centre for Applied Climate Sciences (1 Aug 2018 -)
Faculty/School / Institute/Centre: Current - Institute for Life Sciences and the Environment - Centre for Applied Climate Sciences (1 Aug 2018 -)
Date Deposited: 09 May 2022 04:25
Last Modified: 09 May 2022 04:25
Uncontrolled Keywords: wetland, SWAT-MODFLOW-RT3D, groundwater, nitrate, Great Barrier Reef, SMR-W
Fields of Research (2020): 37 EARTH SCIENCES > 3707 Hydrology > 370703 Groundwater hydrology
41 ENVIRONMENTAL SCIENCES > 4105 Pollution and contamination > 410503 Groundwater quality processes and contaminated land assessment
37 EARTH SCIENCES > 3707 Hydrology > 370704 Surface water hydrology
Socio-Economic Objectives (2020): 18 ENVIRONMENTAL MANAGEMENT > 1803 Fresh, ground and surface water systems and management > 180306 Measurement and assessment of freshwater quality (incl. physical and chemical conditions of water)
Identification Number or DOI: https://doi.org/10.1016/j.envsoft.2022.105407
URI: http://eprints.usq.edu.au/id/eprint/48224

Actions (login required)

View Item Archive Repository Staff Only