Regional-scale, fully coupled modelling of stream–aquifer interaction in a tropical catchment

Werner, Adrian D.; Gallagher, Marcus; Weeks, Scott W.

doi:10.1016/j.jhydrol.2005.12.034

Cited by 66 publications

(45 citation statements)

References 30 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…It is apparent that the majority of regional scale models addressing GW-SW make use of either traditional hydrological (rainfall runoff in the widest sense) or groundwater flow models and represent the other part by relatively simple, conceptual descriptions (see also Fleckenstein et al 2006;Hattermann et al 2004). It is quite common that regional integrated models are based on surface water models rather than on groundwater models (Werner et al 2006). Groundwater-centred integrated models most often employ MODFLOW, using a more or less complex solution for surface water discharge and soil moisture to provide input for the chosen boundary condition packages.…”

Section: Application Potential and Limitations Of Loosely Coupled Schmentioning

confidence: 99%

Groundwater and Surface Water Interaction at the Regional-scale – A Review with Focus on Regional Integrated Models

Barthel

Banzhaf

2015

Water Resour Manage

200

124

View full text Add to dashboard Cite

Scientists and practitioners agree that integrated water resource management is necessary, with an increasing need for research at the regional scale (10 3 to 10 5 km 2 ). At this scale interactions between environmental and human systems are fully developed and global change is linked to local actions. The groundwater-surface water interaction (GW-SW) is of particular interest. Herein we review the scientific journal literature and examine GW-SW at the regional scale. We briefly review all existing literature on GW-SW, then summarise its characteristics at different scales and identify specific challenges of the regional scale. We explore whether GW-SW should be treated differently at regional and local scales. Regional GW-SW is rarely examined in experimental field studies, which almost exclusively cover small areas. However, GW-SW is often integral to large scale coupled models. Thus, we collate information about existing models and their regional applications. Fully coupled, physics-based models have great potential to meet the technical challenges. However, limited data availability hampers the application of complex models at the regional scale and loosely coupled schemes are more widely applied. Many integrated modelling concepts have been published, but none have been applied in a wide range of settings. Thus, it is impossible to compare the performance of different approaches. Comparative analyses of existing regional scale integrated models in the context of different data availability and geographic conditions are needed. Unfortunately, peer-reviewed journal literature no longer provides a representative picture of the subject as models are becoming Btoo big to be published^or too pragmatic.

show abstract

Section: Application Potential and Limitations Of Loosely Coupled Schmentioning

confidence: 99%

Groundwater and Surface Water Interaction at the Regional-scale – A Review with Focus on Regional Integrated Models

Barthel

Banzhaf

2015

Water Resour Manage

200

124

View full text Add to dashboard Cite

show abstract

“…The use of local models for solving regional issues entails the same effects Gunduz, 2003, 2006;Wondzell et al, 2009). Therefore, alternative ways of modelling are needed to simulate the behaviour of stream-aquifer interfaces at the regional scale properly (Werner et al, 2006), especially as, for a given reach of river, the direction of stream-aquifer exchanges can vary longitudinally (Bencala et al, 2011). The concept of nested stream-aquifer interface led to the identification of the river network, and by extension the hyporheic corridor, as the location where to scale models for the accurate simulation of hydrological processes (Sect.…”

Section: Up-and Downscaling Stream-aquifer Exchangesmentioning

confidence: 99%

Continental hydrosystem modelling: the concept of nested stream–aquifer interfaces

Flipo

Mouhri

Labarthe

et al. 2014

Hydrol. Earth Syst. Sci.

View full text Add to dashboard Cite

Abstract. Coupled hydrological-hydrogeological models, emphasising the importance of the stream-aquifer interface, are more and more used in hydrological sciences for pluridisciplinary studies aiming at investigating environmental issues. Based on an extensive literature review, stream-aquifer interfaces are described at five different scales: local [10 cm- . This led us to develop the concept of nested stream-aquifer interfaces, which extends the well-known vision of nested groundwater pathways towards the surface, where the mixing of low frequency processes and high frequency processes coupled with the complexity of geomorphological features and heterogeneities creates hydrological spiralling. This conceptual framework allows the identification of a hierarchical order of the multi-scale control factors of stream-aquifer hydrological exchanges, from the larger scale to the finer scale. The hyporheic corridor, which couples the river to its 3-D hyporheic zone, is then identified as the key component for scaling hydrological processes occurring at the interface. The identification of the hyporheic corridor as the support of the hydrological processes scaling is an important step for the development of regional studies, which is one of the main concerns for water practitioners and resources managers.In a second part, the modelling of the stream-aquifer interface at various scales is investigated with the help of the conductance model. Although the usage of the temperature as a tracer of the flow is a robust method for the assessment of stream-aquifer exchanges at the local scale, there is a crucial need to develop innovative methodologies for assessing stream-aquifer exchanges at the regional scale. After formulating the conductance model at the regional and intermediate scales, we address this challenging issue with the development of an iterative modelling methodology, which ensures the consistency of stream-aquifer exchanges between the intermediate and regional scales.Finally, practical recommendations are provided for the study of the interface using the innovative methodology MIM (Measurements-Interpolation-Modelling), which is graphically developed, scaling in space the three pools of methods needed to fully understand stream-aquifer interfaces at various scales. In the MIM space, stream-aquifer interfaces that can be studied by a given approach are localised. The efficiency of the method is demonstrated with two examples. The first one proposes an upscaling framework, structured around river reaches of ∼ 10-100 m, from the local to the watershed scale. The second example highlights the usefulness of space borne data to improve the assessment of streamaquifer exchanges at the regional and continental scales. We conclude that further developments in modelling and field measurements have to be undertaken at the regional scale to enable a proper modelling of stream-aquifer exchanges from the local to the continental scale.

show abstract

“…Smakhtin, 2001;Werner et al, 2006). The term baseflow is often referred to as the groundwater contribution to streamflow (e.g.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of outputs from automated baseflow separation methods against simulated baseflow from a physically based, surface water-groundwater flow model

Partington

Brunner

Simmons

et al. 2012

Journal of Hydrology

140

View full text Add to dashboard Cite

s u m m a r yBaseflow is often considered to be the groundwater discharge component of streamflow. It is commonly estimated using conceptual models, recursive filters or a combination of the two. However, it is difficult to validate these methods due to the current challenges of measuring baseflow in the field. In this study, simulation of a synthetic catchment's response to rainfall is carried out using a fully integrated surface water-groundwater flow model. A series of rainfall events with differing recovery periods and varied antecedent moisture conditions is considered to span a range of different streamflow generation dynamics. Baseflow is estimated for the outlet hydrograph of the synthetic catchment using a selection of commonly used automated baseflow separation methods. These estimates are compared to the baseflow signal obtained from the numerical model, which serves as the control experiment. Results from these comparisons show that depending on the method used, automated baseflow separation underestimates the simulated baseflow by as much as 28%, or overestimates it by up to 74%, during rainfall events. No separation method is found to be clearly superior to the others, as the performance of the various methods varies with different soil types, antecedent moisture conditions and rainfall events. The differences between the various approaches clearly demonstrate that the baseflow separation methods investigated are not universally applicable.

show abstract

Regional-scale, fully coupled modelling of stream–aquifer interaction in a tropical catchment

Cited by 66 publications

References 30 publications

Groundwater and Surface Water Interaction at the Regional-scale – A Review with Focus on Regional Integrated Models

Groundwater and Surface Water Interaction at the Regional-scale – A Review with Focus on Regional Integrated Models

Continental hydrosystem modelling: the concept of nested stream–aquifer interfaces

Evaluation of outputs from automated baseflow separation methods against simulated baseflow from a physically based, surface water-groundwater flow model

Contact Info

Product

Resources

About