Storage cascade vs. MODFLOW for the modelling of groundwater flow in the context of the calibration of a hydrological model in the Ammer catchment

Rojanschi, V.; Wolf, Jens; Barthel, Roland

doi:10.5194/adgeo-9-101-2006

Cited by 3 publications

(3 citation statements)

References 8 publications

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“…Our own experiences from the GLOWA-Danube project for the Upper Danube catchment (77,000 km², Barthel et al 2012;Ludwig et al 2003) and in the RiverTwin project for the Neckar catchment (14,000 km², Barthel et al 2008a;Gaiser et al 2008) in Germany gave deeper insights of the tremendous challenges associated with integrated modelling at the regional scale. Some of these difficulties have been discussed in detail in previous publications (Barthel 2006;Barthel et al 2008a;Götzinger et al 2008;Rojanschi et al 2006;Wolf et al 2008). For example, huge problems arise when groundwater recharge, calculated by conceptual hydrological models is applied to physics-based numerical groundwater flow models because the spatial distribution of this recharge does not take into account the geology of regional aquifers (discussion in Barthel 2006;Jie et al 2011;Wolf et al 2008).…”

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

207

124

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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.

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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

207

124

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“…The ground water flux from the aquifer to the rivers calculated by MODFLOW was then used as the base flow component in the corresponding hydrological catchment models using routing algorithms for discharge modeling in the rivers. For a detailed description of the overall model, see Ludwig et al (2003) and Rojanschi et al (2006) for the Ammer catchment model.…”

Section: Introductionmentioning

confidence: 99%

“…The correlation (CORR) is adopted to be a representative measure for comparing computed and observed data regarding their dynamics. For both the Ammer and the Upper Danube catchment, routing algorithms exist (Ludwig et al 2003; Rojanschi et al 2006), so that the modeled discharge (base flow from the ground water model plus direct flow from the connected SVAT model PROMET) can be compared to measured data at gauging stations.…”

Section: Introductionmentioning

confidence: 99%

Modeling Ground Water Flow in Alluvial Mountainous Catchments on a Watershed Scale

2008

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In large mountainous catchments, shallow unconfined alluvial aquifers play an important role in conveying subsurface runoff to the foreland. Their relatively small extent poses a serious problem for ground water flow models on the river basin scale. River basin scale models describing the entire water cycle are necessary in integrated water resources management and to study the impact of global climate change on ground water resources. Integrated regional-scale models must use a coarse, fixed discretization to keep computational demands low and to facilitate model coupling. This can lead to discrepancies between model discretization and the geometrical properties of natural systems. Here, an approach to overcome this discrepancy is discussed using the example of the German-Austrian Upper Danube catchment, where a coarse ground water flow model was developed using MODFLOW. The method developed uses a modified concept from a hydrological catchment drainage analysis in order to adapt the aquifer geometry such that it respects the numerical requirements of the chosen discretization, that is, the width and the thickness of cells as well as gradients and connectivity of the catchment. In order to show the efficiency of the developed method, it was tested and compared to a finely discretized ground water model of the Ammer subcatchment. The results of the analysis prove the applicability of the new approach and contribute to the idea of using physically based ground water models in large catchments.

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Proposed Sequential Process to Identify Smaller Vulnerable Area from a Larger Area for Groundwater Modelling Studies using Groundwater Potential Zone and Stage of Groundwater Development Category Maps – A Study for Cheyyar River Basin, Tamil Nadu, India

Narayanamurthi,

Ramasamy

2023

Journal of the Geological Society of India

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Groundwater modelling requires data from electrical resistivity surveying and pumping test, which consumes more time and cost for its collection for a larger area. In this study, using remote sensing data and GIS tools, a sequential process is proposed for finding the suitable vulnerable smaller area for groundwater modelling from a relatively larger area. The chosen larger area, Cheyyar river basin, Tamil Nadu, India spreading 4358 km2, has groundwater decline due to aquifer groundwater exploitation. Groundwater potential zone with river basin as boundary and stage of groundwater development with firrka boundary are used for this study. For comparison, 56 firrkas covering the entire river basin were reduced to 26 firrkas, with at least 95% preserved area after reducing along the river basin boundary. Groundwater potential zones were converted to a firrka-wise representative potential zone by considering mode as a central tendency. As all the firrkas come under the moderate category, it was further reclassified into good-skewed-moderate, moderate and poor-skewed-moderate. The combinational class was developed by combining the two category maps for each firrka. The over-exploited and critical categories under good-skewed-moderate and over-exploited under the moderate category were considered vulnerable combinations. A total of eight firrkas come under the vulnerable category. Based on data availability and data collection feasibility in the vulnerable firrkas, Kelur’s moderate overexploitation category is considered a smaller vulnerable area for groundwater modelling study.

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Storage cascade vs. MODFLOW for the modelling of groundwater flow in the context of the calibration of a hydrological model in the Ammer catchment

Cited by 3 publications

References 8 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

Modeling Ground Water Flow in Alluvial Mountainous Catchments on a Watershed Scale

Proposed Sequential Process to Identify Smaller Vulnerable Area from a Larger Area for Groundwater Modelling Studies using Groundwater Potential Zone and Stage of Groundwater Development Category Maps – A Study for Cheyyar River Basin, Tamil Nadu, India

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