River Basin Management X最新文献

{"title":"ADEQUACY OF GEOTEXTILE TUBE DEWATERING IN THREE RIVER REMEDIATION SCENARIOS","authors":"G. V. D. Berg, Filinto Alexandre Pinto De Oliveira","doi":"10.2495/RBM190161","DOIUrl":"https://doi.org/10.2495/RBM190161","url":null,"abstract":"Natural processes and human interference can lead to undesirable sedimentation of a magnitude difficult to deal with in an economical, ecological and societally acceptable manner. Showcasing various examples throughout the world, criteria to choose an adequate river remediation technology will be discussed, in three distinct scenarios: (1) the case of natural processes leading to a build-up of contaminated sediments; (2) the case of industrial activity leading to contamination; and finally (3) the case of disaster management. For the first time we will discuss the approach taken in Portugal to clean the Tago river at Vila Velha do Rodão where a layer of sediment with high cellulose levels covering the bottom on both sides of the Porta de Rodão at the heart of the Natura 2000 Site and UNESCO World Heritage listed natural park had to be removed and dewatered. Other cases of river remediation projects will be presented as well, such as the case of Fox river (USA) and Zutphen (the Netherlands), where contaminated sediments were used to rebuild the entrance of a river port. We will also touch upon the potential for tube dewatering technology as a response during disaster management and the hurdles encountered in the actions around two red mud disasters. The first dating from 2010 in Hungary at Ajka where a dam breach in a containment facility released 1.1 Mm3 of red sludge into a widespread area, polluting agricultural land and water ways. The second at the Rio Doce at Vale Samarco in Brazil in 2015, where dewatering bags were used to build a dam using the red mud spilled into the river.","PeriodicalId":390754,"journal":{"name":"River Basin Management X","volume":"344 5","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"113998364","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"DEVELOPMENT AND ASSESSMENT OF A SINGLE-EVENT DESIGN FLOOD ESTIMATION TOOL: CASE STUDY IN FOUR CLIMATOLOGICAL REGIONS OF SOUTH AFRICA","authors":"O. J. Gericke","doi":"10.2495/RBM190061","DOIUrl":"https://doi.org/10.2495/RBM190061","url":null,"abstract":"The estimation of design floods characterised by a specific magnitude-frequency relationship at a particular site is necessary for the planning, design and operation of hydraulic structures. Both the occurrence and the frequency of floods, along with the uncertainty involved in the estimation thereof, contribute to the practitioners’ dilemma to make a single, justifiable decision based on the results obtained from the various single-event design flood estimation methods available internationally. This paper presents the further development and assessment of a Design Flood Estimation Tool (DFET) in four climatologically different regions of South Africa. The DFET was developed and programmed using Microsoft Visual Basic for Applications and the functionality and application thereof were assessed by comparing the DFET-based probabilistic, deterministic and empirical design flood estimates in 12 gauged catchments. The refined and improved DFET proved to be an easy to use software tool for the rapid estimation and assessment of alternative design flood estimation methods for at-site applications in both gauged and ungauged catchments. In general, the empirical methods resulted in more acceptable design flood peaks than the deterministic methods when compared to the at-site probabilistic flood peaks. Furthermore, the use of more complex deterministic methods, e.g. Synthetic Unit Hydrograph (SUH) method, as opposed to the more simplified deterministic methods, e.g. Rational method (RM) and Soil Conservation Services (SCS) method, does not necessarily guarantee and result in more acceptable peak discharge estimates. The latter also emphasises that no single design flood estimation method could be regarded as superior to any other method when the wide range of flood magnitude-frequency problems encountered in practice, needs to be solved. Practitioners still have to apply their own experience, knowledge and skills to these particular problems until the current National Flood Study Programme (NFSP) narrows the gap between flood research and practice in South Africa.","PeriodicalId":390754,"journal":{"name":"River Basin Management X","volume":"50 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132492554","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"CRITICAL ROLE OF BRIDGING ORGANIZATIONS IN RIVER BASIN MANAGEMENT IN ALBERTA, CANADA","authors":"J. Stewart","doi":"10.2495/RBM190101","DOIUrl":"https://doi.org/10.2495/RBM190101","url":null,"abstract":"The paper examines bridging and brokerage functions performed by a Canadian watershed-scale bridging organization in Alberta’s watershed governance and management system. The Bow River Basin Council (BRBC), a multi-stakeholder bridging organization in the Bow River Basin in southern Alberta, Canada, provides the demonstration context for exploring concepts of bridging organizations and their evolving roles. BRBC performs strategic bridging functions that connect and engage crosssectoral public and private stakeholders who otherwise would not be included in watershed governance or management decision-making processes. BRBC operates at the watershed-scale and plays critical roles as a strategic broker of information, knowledge, values, and power and influence in the region. BRBC provides venues for stakeholder collaboration to resolve complex watershed management problems where solutions are reached by consensus. Stakeholders work together to identify shared community values and issues of common concern. BRBC builds trust relationships, co-generates crosssectoral knowledge, and facilitates social learning to help resolve stakeholder conflicts over the use and management of scarce water resources in the Bow River Basin.","PeriodicalId":390754,"journal":{"name":"River Basin Management X","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115773601","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"DEVELOPMENT OF A RAINFALL-RUNOFF MODEL: SUITABILITY ASSESSMENT IN THE MORAVA RIVER BASIN, CZECH REPUBLIC","authors":"Kateřina Knoppová, D. Marton","doi":"10.2495/RBM190151","DOIUrl":"https://doi.org/10.2495/RBM190151","url":null,"abstract":"","PeriodicalId":390754,"journal":{"name":"River Basin Management X","volume":"42 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128548234","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"ESTIMATION OF LEVEE FAILURE POINTS BASED ON LEVEE VULNERABILITY INDEX AND FLOOD RISK ANALYSIS BY INTEGRATING SIMULATION OF FLOOD FLOW AND INUNDATION","authors":"Kosuke Tabata, S. Fukuoka","doi":"10.2495/RBM190081","DOIUrl":"https://doi.org/10.2495/RBM190081","url":null,"abstract":"ABSTRACT To examine the flood risk management measures, it is important to estimate the levee breach points, inundation discharge hydrograph and motion of the inundation water in the basin as precisely as possible. The purpose of this paper is to conduct the above series of studies on the Kinu River (Japan) suffered from inundation in the range of 40 km2 due to overflowing and levee breach during the 2015 large flood. First, a simulation model integrating flood flow and inundation is developed. The inundation discharge hydrographs due to the overflowing and levee breach are estimated by the flood flow analysis based on observed temporal changes in water surface profiles in the Kinu River. The inundation is calculated by a two-dimensional model. The mesh of the inundation analysis model is generated by regular grid with 5 m size in order to express the microtopography obtained by DSM (Digital Surface Model). Manning’s roughness coefficients are given according to the situation of the land use and inundation depth. It is confirmed that the developed model is useful by the inundation arrival time read from camera images and the spread of the actual inundation water in the basin. Next, the suitability of the levee vulnerability index t* which has been derived by the authors is examined for the levees of the Kinu River. Finally, the inundation flow analysis is conducted under the actual and hypothetical levee breach conditions based on the value of t*. It is concluded that the difference in the location and time of the levee breach influences on the motion of the inundation water and inundation areas in the Kinu River basin.","PeriodicalId":390754,"journal":{"name":"River Basin Management X","volume":"55 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131212922","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"UNDERGROUND WATERS: CHANGES IN GROUNDWATER POLICIES","authors":"Francine Cansi, J. Moreno","doi":"10.2495/RBM190131","DOIUrl":"https://doi.org/10.2495/RBM190131","url":null,"abstract":"The 1988 Constitution of Brazil used the expression “water resources”, not translating its economic use, but as being for the general enjoyment of the collectivity, the populace. Debates on issues related to underground water availability as another source of the water supply have raised major concerns about the quantity, quality and depletion of this resource. Even using this tuning fork, this hydrogeological body of water remains in a situation of scarcity, in the same way as the superficial waters, because the knowledge of the subject is still hindered. In Brazil, for example, the distribution of water is far from homogeneous, although there is a government effort to protect this reservoir. The greatest challenge in terms of water resources conservation lies in the lack of effective mechanisms to control, protect and use these natural resources without impeding the economic growth of the country. On the other hand, the concept of there being a water crisis goes beyond scarcity, resulting from a combination of governance failures, environmental preservation, sustainability issues and disparity in access to water. While the human right to water requires the use of this sensitive and exhaustible resource, there is an obligation for states to ensure there is secure access and secure storage, and there is a need for a more active role of sustainability to be present in society at large; however, the underground water use and management reiterate the same flaws that lead to surface water degradation. In addition, the deliberate use of groundwater requires rational actions, as resource allocation is as important in equity, which is often crucial in governance decisions. In order to understand groundwater policies, it is imperative to understand the structure and actual sequence of events by analyzing the factors or attributes that make groundwater management successful in some regions, but not others.","PeriodicalId":390754,"journal":{"name":"River Basin Management X","volume":"129 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114521543","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"AREAL REDUCTION FACTORS FOR DESIGN RAINFALL ESTIMATION IN THE MODDER-RIET RIVER BASIN, SOUTH AFRICA","authors":"J. Pietersen, O. Gericke","doi":"10.2495/RBM190041","DOIUrl":"https://doi.org/10.2495/RBM190041","url":null,"abstract":"Design point rainfall estimates assume a uniform distribution of rainfall over a catchment and hence are only representative of a limited area. For larger areas, Areal Reduction Factors (ARFs) are used to convert design point rainfall depths or intensities to an average areal design rainfall depth or intensity for a catchment-specific critical storm duration and catchment area. This paper presents the development of an enhanced methodology to express the spatial and temporal rainfall variability at a quaternary catchment (QC) level by means of geographically-centred and probabilistically correct ARFs. The ARF values presented in this paper are based on observed daily rainfall data as extracted from 223 rainfall stations situated in the Modder-Riet River Basin (MRRB). The methodology adopted is based on a modified version of Bell’s geographically-centred approach. Individual sets of ARF values were derived for each of the 23 QCs present in the MRRB by considering various storm durations and corresponding recurrence intervals. The differences in the regional sample ARF values highlight the presence of dominant weather types in each region and also confirm that ARFs are influenced by different rainfall-producing mechanisms, while not being constant for various storm durations and exceedance probabilities or recurrence intervals. It is recommended that the findings from this study and the use of geographically-centred probabilistically correct ARFs be expanded to other regions, both nationally and/or internationally to ultimately facilitate both improved design rainfall and flood estimation.","PeriodicalId":390754,"journal":{"name":"River Basin Management X","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129764595","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"TURBULENT KINETIC ENERGY IN FISH PASSES OF VARIOUS TYPES OF CONSTRUCTION","authors":"M. Puzdrowska, T. Heese","doi":"10.2495/RBM190091","DOIUrl":"https://doi.org/10.2495/RBM190091","url":null,"abstract":"","PeriodicalId":390754,"journal":{"name":"River Basin Management X","volume":"25 2","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120843162","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"FINANCING OF WATER POLICY: COST RECOVERY OF THE HYDROGRAPHIC CONFEDERATIONS OF SPAIN","authors":"M. López, B. Sanz, J. Moreno","doi":"10.2495/RBM190121","DOIUrl":"https://doi.org/10.2495/RBM190121","url":null,"abstract":"The shortage of water resources and the complex institutional framework in Spain have originated several different organizations responsible for devising water policy measures that have to share the funding. With this distribution of functions, each organization is responsible for some tasks and with funding to perform them. However, taking into account that in Spain the full financing of all aspects of water policy is not achieved, it is understandable that the Hydrographic Confederations are not capable of recovering the costs of their activities. We must add that the distribution of financial resources may not be the most appropriate, which would leave the Hydrographic Confederations in a complicated situation, this paper intends to examine the current financial situation of these organizations. The results of the analysis show that there is a lack of recovery of financial costs in the main activities, which would be offset by a transfer of external funds to the water policy, since this must necessarily be financed. This also implies that, if the environmental costs are added to the financial costs, the result is a very low cost recovery. In addition, there are activity plans that are not being carried out due to the lack of financing, so it seems appropriate to suggest an increase in prices or water pricing to compensate for this lack of funding.","PeriodicalId":390754,"journal":{"name":"River Basin Management X","volume":"47 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126399876","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"SEDIMENT TRANSPORT AT RIVER CONTRACTIONS","authors":"G. Oliveto","doi":"10.2495/RBM190011","DOIUrl":"https://doi.org/10.2495/RBM190011","url":null,"abstract":"River contractions might occur because of either natural controls or hydraulic works. This paper aims to provide new insights on the temporal evolution of the morphological patterns at river contractions based on experiments at laboratory scale. Laboratory tests were performed in a 20 m long straight channel having a rectangular cross section, 1.0 m wide and 1.0 m deep. The erodible bed reach was made by almost uniform sediment consisting of either rough sand or medium gravel. The contraction model was 0.5, 1.0, 2.0, or 3.0 m long. Three contraction ratios = b/B = 0.9, 0.8, and 0.7 were considered, with b width of the contracted reach and B width of the approach channel. The experiments were performed in clear-water scour regime and steady flow conditions. Typically, they were of long duration (up to 15 days) to achieve conditions of dynamic equilibrium, but runs of short duration were also carried out to acquire suitable experimental data at the earlier stages of the bed forms development. Compared to previous studies by the author on the same topic, new results are provided on bed morphology characteristics, also considering literature data, and predictive models on the timedependent development of the bed degradation in and downstream of the contracted area.","PeriodicalId":390754,"journal":{"name":"River Basin Management X","volume":"102 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124652832","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}