Predicting critical source areas for diffuse herbicide losses to surface waters: Role of connectivity and boundary conditions

Frey, Martin; Schneider, Manuel K.; Dietzel, Anne; Reichert, Peter; Stamm, Christian

doi:10.1016/j.jhydrol.2008.11.015

Cited by 64 publications

(73 citation statements)

References 38 publications

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“…It was shown that an increase in runoff from the newly urbanised area is not only related to variation in rainfall/runoff response under new land cover conditions, but also to a greater catchment area contributing to the river flow. Similar observations were reported for agricultural areas where artificial drainage network was shown to increases catchment connectivity (Frey et al, 2009;Payraudeau et al, 2009), but the effect of urbanisation on catchment connectivity is not widely reported.…”

Section: Discussionsupporting

confidence: 76%

Evaluation of catchment contributing areas and storm runoff in flat terrain subject to urbanisation

Barron

Pollock

Dawes

2011

Hydrol. Earth Syst. Sci.

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Abstract. Contributing Catchment Area Analysis (CCAA) is a spatial analysis technique developed and used for estimation of the hydrological connectivity of relatively flat catchments. It allows accounting for the effect of relief depressions on the catchment rainfall-runoff relationship which is not commonly considered in hydrological modelling. Analysis of distributed runoff was based on USDA runoff curves numbers (USDA, 1986), which utilised the spatial information on land cover and soil types, while CCAA was further developed to define catchment area contributing to river discharge under individual rainfall events. The method was applied to the Southern River catchment, Western Australia, showing that contributing catchment area varied from less than 20% to more than 60% of total catchment area under different rainfall and soil moisture conditions. Such variability was attributed to a compensating effect of relief depressions. CCAA was further applied to analyse the impact of urbanisation on the catchment rainfall-runoff relationship. It was demonstrated that in addition to an increase in runoff coefficient, urbanisation leads to expansion in the catchment area contributing to the river flow. This effect was more evident for the most frequent rainfall events, when an increase in contributing area was responsible for a 30-100% rise in predicted catchment runoff.

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Section: Discussionsupporting

confidence: 76%

Evaluation of catchment contributing areas and storm runoff in flat terrain subject to urbanisation

Barron

Pollock

Dawes

2011

Hydrol. Earth Syst. Sci.

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“…Each parameter j was analysed for its local sensitivity SI in the parameter range Δp j via n model runs. The model output variation ∂y i was set in relation to the parameter variation ∂p i , as used in Frey et al (2009):…”

Section: Sensitivity Analysismentioning

confidence: 99%

Estimation of phosphorus export from a Mediterranean agricultural catchment with scarce data

Gaßmann

Brito

Olsson

2013

Hydrological Sciences Journal

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Knowledge of the amount of nutrient input to receiving waters by their catchments is often mandatory for water managers. In this study, we estimated the export of phosphorus from a Mediterranean catchment into a downstream reservoir under the constraint of limited sampling data availability. We calibrated the physically-based catchment-scale model ZIN-Sed 2D to a regionalized flow duration curve and scarce event mean sampling data of dissolved and particulate phosphorus. The model results were further confirmed by discussion of soft data from the literature. Our modelling approach differs from commonly applied models by using a time step of less than 1 day, and a Langmuir isotherm for phosphorus sorption instead of the linear isotherm. The successful model application showed that this combination of methods is applicable under data-scarce conditions and the long-term phosphorus export from the study site is below average for this region.

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“…Furthermore, the SMDR model which is based on GIS is also used by several researchers in hydrological modelling of unsaturated zone Alwis et al, 2007;Campos et al, 2008;Rao et al, 2009;Frey et al, 2009;Canoğlu, 2017).…”

Section: Introductionmentioning

confidence: 99%

Determination of Hydrologic Characteristics of Si̇nop Demi̇rci̇köy Watershed and Production of Monthly Saturation Degree Maps

Canoğlu

2017

Bulletin of the Mineral Research and Exploration

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The aim of this study is to determine the hydrologic characteristics and to analyze the temporal saturation degree variations of Demirciköy Watershed which is located in Sinop City and subjected to rapidly increasing population. This study is important in terms of preventing the natural disasters such as fl ood, storm water, landslide and mitigation of damages within the frame of watershed planning concept. This study consists of fi eld, offi ce and laboratory stages. In context of fi eld studies, representative soil samples are taken from study area. Within the scope of laboratory studies, soil hydrologic properties are characterized with the determination of soil texture of the soil samples handled from study area. The results of the laboratory tests are utilized as part of offi ce studies with the use of the Soil Moisture Distribution and Routing (SMDR) model in Geographic Information Systems (GIS) environment considering the meteorological data such as precipitation, temperature and evapotranspiration. Spatial and temporal variation of saturation degree in Demirciköy Watershed is determined with SMDR model. The obtained monthly saturation degree maps show the variation of soil moisture in a year and allow determining the potential runoff generation zones. The results of the study show that soil moisture in South part of watershed is lower than in North part.

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Predicting critical source areas for diffuse herbicide losses to surface waters: Role of connectivity and boundary conditions

Cited by 64 publications

References 38 publications

Evaluation of catchment contributing areas and storm runoff in flat terrain subject to urbanisation

Evaluation of catchment contributing areas and storm runoff in flat terrain subject to urbanisation

Estimation of phosphorus export from a Mediterranean agricultural catchment with scarce data

Determination of Hydrologic Characteristics of Si̇nop Demi̇rci̇köy Watershed and Production of Monthly Saturation Degree Maps

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