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GroMoPo Metadata for Del Azul basin SWAT-MODFLOW model


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Created: Feb 07, 2023 at 7:23 p.m.
Last updated: Feb 07, 2023 at 7:24 p.m.
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Abstract

The study of the dynamics of anthropic disturbances that have an effect on the hydrological systems in plains requires integral simulation tools for their diagnosis. The objective of this article is, first, to analyse and reproduce the spatio-temporal interactions between groundwater (GW) and surface water, net recharge, GW level, surface run-off, and evapotranspiration in the upper creek basin of Del Azul, which is located in the centre of the province of Buenos Aires, Argentina, and second, to obtain insights to apply the methodology to other similar situations. For this purpose, a model coupling the semidistributed hydrological model (Soil and Water Assessment Tool [SWAT]) and the hydrogeological model (MODFLOW) has been used. A simulation was carried out for a period of 13 years (2003-2015) on a daily scale. The application of the SWAT-MODFLOW coupling gave good results based on the adjustment between the calculated flows and levels, reaching a Nash-Sutcliffe of 0.6 and R(2)0.6 at the Seminario hydrometric station located at the watershed outlet point. According to the annual average balance, out of the total rainfall, evapotranspiration accounts for 85%, recharge accounts for 10.2%, and surface run-off accounts for 4.8%. Annual and monthly trends of the stream-aquifer interaction were determined, obtaining on average an annual GW discharge of 34 mm and an annual average recharge of the stream to the aquifer of 1.4 mm. Monthly GW discharges are higher in winter-spring (July to December with an average of 3.3 mm) and lower in summer-autumn (January to June with an average of 2.8 mm). The monthly average recharge of the stream towards the aquifer varies from 0.02 to 0.36 mm and is higher in March, May, and August, when water excess is produced in the basin. Through the analysis of coupled modelling, it is possible to analyse and reproduce the spatio-temporal transitions of flow existing between the stream, the hyporheic zone, and the aquifer.

Subject Keywords

Coverage

Spatial

Coordinate System/Geographic Projection:
WGS 84 EPSG:4326
Coordinate Units:
Decimal degrees
Place/Area Name:
Argentina
North Latitude
-36.8167°
East Longitude
-59.4167°
South Latitude
-37.3500°
West Longitude
-60.1333°

Content

Additional Metadata

Name Value
DOI 10.1002/hyp.13615
Depth 120
Scale 1 001 - 10 000 km²
Layers 1 layer
Purpose Groundwater resources;Scientific investigation (not related to applied problem)
GroMoPo_ID 103
IsVerified True
Model Code MODFLOW
Model Link https://doi.org/10.1002/hyp.13615
Model Time 2003–2015
Model Year 2020
Model Authors Cristian Guevara Ochoa, Agustín Medina Sierra,Luis Vives, Erik Zimmermann, Ryan Bailey
Model Country Argentina
Data Available Report/paper only
Developer Email cguevara@ihlla.org.ar
Dominant Geology Model focuses on multiple geologic materials
Developer Country Argentina
Publication Title Spatio-temporal patterns of the interaction between groundwater and surface water in plains
Original Developer No
Additional Information The study of the dynamics of anthropic disturbances that have an effect on the hydrological systems in plains requires integral simulation tools for their diagnosis. The objective of this article is, first, to analyse and reproduce the spatio-temporal interactions between groundwater (GW) and surface water, net recharge, GW level, surface run-off, and evapotranspiration in the upper creek basin of Del Azul, which is located in the centre of the province of Buenos Aires, Argentina, and second, to obtain insights to apply the methodology to other similar situations. For this purpose, a model coupling the semidistributed hydrological model (Soil and Water Assessment Tool [SWAT]) and the hydrogeological model (MODFLOW) has been used. A simulation was carried out for a period of 13 years (2003–2015) on a daily scale. The application of the SWAT–MODFLOW coupling gave good results based on the adjustment between the calculated flows and levels, reaching a Nash–Sutcliffe of 0.6 and R20.6 at the Seminario hydrometric station located at the watershed outlet point. According to the annual average balance, out of the total rainfall, evapotranspiration accounts for 85%, recharge accounts for 10.2%, and surface run-off accounts for 4.8%. Annual and monthly trends of the stream–aquifer interaction were determined, obtaining on average an annual GW discharge of 34 mm and an annual average recharge of the stream to the aquifer of 1.4 mm. Monthly GW discharges are higher in winter–spring (July to December with an average of 3.3 mm) and lower in summer–autumn (January to June with an average of 2.8 mm). The monthly average recharge of the stream towards the aquifer varies from 0.02 to 0.36 mm and is higher in March, May, and August, when water excess is produced in the basin. Through the analysis of coupled modelling, it is possible to analyse and reproduce the spatio-temporal transitions of flow existing between the stream, the hyporheic zone, and the aquifer.
Integration or Coupling Surface water
Evaluation or Calibration Dynamic water levels;Surface water flow
Geologic Data Availability

How to Cite

GroMoPo, S. Ruzzante (2023). GroMoPo Metadata for Del Azul basin SWAT-MODFLOW model, HydroShare, http://www.hydroshare.org/resource/517a24671115407da4bd9b22221a695b

This resource is shared under the Creative Commons Attribution CC BY.

http://creativecommons.org/licenses/by/4.0/
CC-BY

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