Impact of land use on the hydraulic properties of the topsoil in a small French catchment

González-Sosa, Enrique; Braud, Isabelle; Dehotin, J.; Lassabatère, Laurent; Angulo-Jaramillo, Rafaël; Lagouy, M.; Branger, Flora; Jacqueminet, C.; Kermadi, S.; Michel, Kristell

doi:10.1002/hyp.7640

Cited by 129 publications

(92 citation statements)

References 59 publications

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“…functionning. The rural part of the catchment has a high infiltration capacity (Gonzalez-Sosa et al, 2010) but a small storage capacity. Therefore, for the small to medium events, the catchment response is mainly dominated by the quick response of urban areas for the formation of peak discharge and a delayed rural response mainly impacting the recession curve.…”

Section: Discussionmentioning

confidence: 99%

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Evidence of the impact of urbanization on the hydrological regime of a medium-sized periurban catchment in France

Braud¹,

Breil²,

Thollet³

et al. 2013

Journal of Hydrology

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141

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International audienceIn this paper we explore several indicators to evidence the impact of land use change, and particularly of urbanization/artificialization on discharge series of periurban catchments. A first set of indicators is derived from the literature and describes the monthly and annual hydrological regime, low flows and high flows, and flow components. Statistical tests are also applied to assess the existence of trends/rup-tures on the longest time series. In addition, new indicators, especially built to show the impact of sewer overflow devices (SODs) and infiltration into sewer networks are proposed. The method is applied to the Yzeron (150 km 2) catchment, located close to Lyon city (France) where various discharge gauges with a variable time step are available on sub-catchments ranging from a few to 130 km 2 (some of them nested), with a large variety of land uses (forest, agricultural land, artificialized areas). In addition, discharge is also measured in a SOD and a combined sewer network so that the relevance of the new proposed indicators can be assessed. In the largest sub-catchments, the results show a decrease of specific discharge from upstream to downstream corresponding to an increase of artificialized areas, except for high flows. When a SOD is present, the specific discharge is increased for frequencies larger than 50%, and the frequency of zero daily discharge is decreased. Waste water can be the only source of water in autumn month in a 4.1 km 2 sub-catchment. Base flow is also decreased for the most urbanized catchments. Our results confirm the impact of SODs on the modification of the flood regime, with an increase of frequent floods, but a marginal impact on the largest floods, mainly governed by saturation of the rural parts of the catchments. The decomposition of the sewer discharge shows that, on an annual basis, infiltration in the sewer network accounts for 30% of the total discharge and runoff due to rainwater to about 40% (the remaining being composed of the waste water discharge). It can explain the decrease of base flow. Our analysis shows that, for periurban catchments, a long term monitoring of nested sub-catchments and infrastructures (SODs, sewer networks) with a small time step, is very valuable and provides data allowing a quantitative assessment of the impact of urbanization on the whole hydrological regime

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Section: Discussionmentioning

confidence: 99%

“…The Yzeron catchment was recently studied within the framework of the AVuPUR (Assessing the Vulnerability of Peri-Urban Rivers) project (Braud et al, 2010). The aim of the project was to increase the knowledge of the functioning and behaviour of periurban catchment hydrology and to propose modelling tools, adapted to those catchments.…”

Section: Introductionmentioning

confidence: 99%

Evidence of the impact of urbanization on the hydrological regime of a medium-sized periurban catchment in France

Braud¹,

Breil²,

Thollet³

et al. 2013

Journal of Hydrology

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141

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“…Elles ont été réalisées sur un bassin périurbain de 6.7 km 2 avec des données topographiques fines de type lidar (mailles de 2x2m). Les données d'occupation des sols sont issues d'analyses d'images à haute réso-lution spatiale [Jacqueminet et al, 2013] et les données sols proviennent de campagnes de mesure directement sur le terrain en complément aux informations de la base de données des sols du programme IGCS [Gonzalez-Sosa et al, 2010].…”

Section: Présentation De La Methode Iripunclassified

Mise en œuvre de la méthode de cartographie du ruissellement IRIP pour l'analyse des risques lies aux écoulements sur l'infrastructure ferroviaire

Dehotin¹,

Chazelle²,

Laverne³

et al. 2015

La Houille Blanche

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RÉSUMÉ. -Les voies ferrées sont des éléments structurant des bassins versants qui modifient les chemins de l'eau. Le réseau ferré national est équipé de dispositifs hydrauliques de collecte et d'acheminement des écoulements depuis l'amont de l'infrastructure jusqu'à un exutoire. Le ruissellement est à l'origine de nombreux incidents sur les infrastructures ferroviaires; autant sur les ouvrages linéaires que sur les aménagements connexes nécessaires à l'exploitation ferroviaire. Ces incidents peuvent trouver leur origine dans l'absence ou le mauvais fonctionnement des dispositifs hydrauliques dont le bassin versant a pu être mal apprécié ou a évolué en raison de modifications de l'occupation des sols. L'érosion de l'assise des voies de chemin de fer, leur submersion par les eaux ou la création d'obstacles par les coulées de boues sont les principaux dysfonctionnements pouvant avoir comme impacts des ralentissements, des interruptions des circulations ferroviaires, voire dans des cas plus rares, des déraillements. Irstea a mis au point une méthode de cartographie du ruissellement (IRIP-Inondation par Ruissellement Intense Pluvial) qui permet d'avoir une vision globale du ruissellement et de sa dynamique potentielle depuis les zones sources jusqu'à l'aval, au niveau des zones d'accumulation. Sur la base de cette méthodologie et en collaboration avec Irstea, la direction de l'Ingénierie de la SNCF développe un logiciel dans l'optique de mieux répondre aux besoins de diagnostic et de gestion des risques liés au ruissellement sur le réseau ferré national. Des travaux de validation de la méthode et son intégration dans le contexte ferroviaire sont en cours avec des données d'incidents liés au ruissellement, recensés par le gestionnaire d'infrastructure. Mots-clefs : ruissellement, érosion, inondation, risques, IRIP, ouvrages linéaires, voies ferrées, infrastructure Applying runoff mapping method IRIP for flooding risk analysis on railway infrastructureRailways can modify flow paths and have an impact on runoff transfer within catchments. The French railway network includes various structures designed to collect and safely route water flows from upstream of the railway infrastructures towards an outlet. Runoff is a risk for railway infrastructures and is source of many incidents impacting both the civil infrastructure but also all the secondary services required for the railway functioning. These risks occur due to dysfunction of hydraulic structures, which may have been inappropriately designed or for which the environment may have evolved due to land cover change. Erosion of the railway basement, flooding and mudslides are the most frequent consequences of a poorly functioning drainage network. Their impacts on rail operations can be: speed limitations, interruption of the traffic, and even derailments in the worst cases. Irstea developed a methodology for the runoff risk mapping called IRIP (Flooding by Intense Pluvial Runoff) which provides a vision at the catchment scale, of the surface runoff and its potential dyn...

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“…After an extensive search of the literature on this subject, it was decided to use data from Gonzalez-Sosa et al, (2010), which used similar land cover categories and gave measurements for porosity and saturated hydraulic conductivity (Table 8. 13). GonzalezSosa et al, (2010) However, a problem with this study in terms of using the values for these parameters was that it used a catchment with a different soil type.…”

Section: (Quartz)mentioning

confidence: 99%

Rural land management impacts on catchment scale flood risk

Pattison¹

2010

Role of Hydrology in Managing Consequences of a Changing Global Environment

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The full-text may be used and/or reproduced, and given to third parties in any format or medium, without prior permission or charge, for personal research or study, educational, or not-for-pro t purposes provided that:• a full bibliographic reference is made to the original source• a link is made to the metadata record in Durham E-Theses• the full-text is not changed in any way The full-text must not be sold in any format or medium without the formal permission of the copyright holders.Please consult the full Durham E-Theses policy for further details. Most approaches to this problem aim to upscale from individual grid cells to whole catchments, something that restricts the complexity of possible process representation, produces models that may not be parsimonious with the data needed to calibrate them and, faced with data uncertainties, provides computational limitations on the extent to which model uncertainty can be fully explored. Rather than upscaling to problems of concern, this thesis seeks to downscale from locations of known flood risk, as a means of identifying where land use management changes might be beneficial and then uses numerical modelling to identify the kinds of management changes required in those downscaled locations. Thus, the aim of this thesis is to test an approach to understanding the impacts of rural land management upon flood risk based upon catchment-to-source downscaling.This thesis uses the case study of the River Eden catchment (2400 km 2 ) as a test (1) it was shown to have a significant impact on downstream flood risk; and (2) it had range of data and information needed for modelling land use changes.The second part of this thesis explored the land management scenarios that could be used to reduce flood risk at the catchment scale. The scenarios to be tested were determined through a stakeholder participation approach, whereby workshops were held to brainstorm and prioritise land management options, and then to identify specific locations within the Eamont sub-catchment where they could tested. There were two main types of land management scenarios chosen: (1) landscape-scale changes, including afforestation and compaction; and (2) corresponding to a 5.8% decrease in peak discharge. A key conclusion is that land management practices have been shown to have an effect on catchment scale flooding, even for extreme flood events. However, the effect of land management scenarios are both spatially and temporally dependent i.e. the same land management practice has different effects depending on where it is implemented, and when implemented in the same location has different effects on different flood events.

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Impact of land use on the hydraulic properties of the topsoil in a small French catchment

Cited by 129 publications

References 59 publications

Evidence of the impact of urbanization on the hydrological regime of a medium-sized periurban catchment in France

Evidence of the impact of urbanization on the hydrological regime of a medium-sized periurban catchment in France

Mise en œuvre de la méthode de cartographie du ruissellement IRIP pour l'analyse des risques lies aux écoulements sur l'infrastructure ferroviaire

Rural land management impacts on catchment scale flood risk

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