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The purpose of this paper is to construct a numerical model for the numerical analysis of the hydraulic transient profile in Trabalhador channel for filling and emptying maneuvers and to determine the water level in time. Model results support operational managers in the decision-making process.

Physical data were provided for the construction and calibration of the numerical model. The equations of Saint-Venant were approximated by a finite difference scheme and the numerical model was written in Fortran. The results of filling and emptying of the channel simulations were compared with the measured water levels.

Measured water levels and those simulated by the numerical model have shown good correlation. The time recorded for the filling and emptying of the canal was also close between the measured and simulated data. The simulation design flow pointed to inundation in the channel banks. Simulation water levels were slightly higher than those measured.

In this model, the combination of canals and pressure conduits was not considered.

The findings confirm the measured time for filling and emptying of the canal, as well as inundation of canal banks for the maximum design flow. These results help in the management process.

This paper presents a numerical model for hydraulic transient analysis in channels with good agreement with the field data.

This article aims to show how communities with severe river flooding can develop sustainable flood plans that remediate environmental problems caused by previous river straightening and other structural flood controls.

The article builds on a case study of the nationally recognized Napa River Flood Protection Project (USA), which incorporates an ecological living river strategy and builds on strong community participation to restore a river and its floodplain. After discussing the drawbacks of structural flood control measures, and especially of river straightening, reviews the contents of the Napa Flood Project and the public participation process necessary for its design, approval and implementation.

The key lessons learned from Napa's flood project are that: undoing past structural works is difficult but feasible; ecological criteria can and should be used to design modern flood projects; involvement of a wide and diverse group of stakeholders is crucial to developing and implementing an environmentally sustainable flood management project; and the US Army Corps of Engineers can work with communities and depart from its typical, structural flood control approaches.

Information on straightened rivers is extremely limited. Furthermore, this study focuses on flood planning for US rivers, and may therefore be less useful elsewhere in the world where the frequency of river straightening may differ.

This case study provides a critique on river straightening, which is a poorly documented but fairly frequent approach to flood control. This article helps to fill gaps in the knowledge of how communities can, and are, addressing environmental concerns associated with flood controls and river straightening.

The purpose of this paper is to evaluate the potential impact of human-induced intervention on hydrological regimes of Gomti river, one of the important tributaries of the Ganga Alluvial Plain in India aiming at an overall assessment of the status quo.

The research methodology includes following four components: study of basin morphology, sub-surface geology and sediments profile of Gomti river; a comparison of LANDSAT satellite data of 1978 and IRS-1C/LISS-III satellite data of 2008 to study the changes occurring in the built-up area, forest and water bodies of the basin; study of flow patterns in different stretches of river Gomti from 1978 to 2012; and water quality assessment at different sites from origin of the river to its confluence in the Ganges.

The paper shows that over the years, the water source in the tributaries feeding the river Gomti has shrunk, reducing the flow in the river. A steady increase in developed land area due to rapid urban sprawl has occurred in recent decades, due to which forest cover and wetlands are decreasing, the river and floodplains are getting fragmented, the hydromorphology changed considerably and several tributaries are getting dried as a result of indiscriminate exploitation of groundwater. There is no flow in the initial 57 km stretch of the river with wide encroachment in active floodplains. Groundwater over-extraction to meet the demands of increasing population and intensive agriculture has led to reduction in base-flows and in some reaches even negative. Extensive land-use changes in the Gomti river basin (GRB) severely impact the river and floodplain connectivity, the impacts are already evident as several tributaries are getting dried during the non-monsoon months.

The information provided by the paper for GRB is significant for the understanding of the basin and to formulate integrated management and development plan of the basin. Significant changes have taken place in the GRB over the recent past and are still continuing. Because of the chosen river basin and the site-specific research approach, the research results may lack generalization. However, it provides a general framework of analysis which could be applied to other regions.

River channels with their floodplains and adjoining ecosystems have to be addressed as interconnected ecological entity in a holistic way. This requires comprehensive observations of the river systems and catchment characteristics using long-term data. The paper could be used as the starting point in the development of management and development strategies for the basin.

River and its floodplain offer multiple ecosystem services and deserve an integrated approach for their conservation and restoration. Conservation and protection of ecologically intact river-floodplain systems is extremely important and urgently needs integrated planning and management. This paper has adopted a integrated approach to study the integrity of river ecosystems and the potential pressures on them.

The purpose of this paper is to integrate the proactive role of communities and the use of flood modeling in the implementation of a flood early warning system.

Manual rain gauges were installed in 20 houses of volunteers living within the Bicol River basin to monitor rainfall. Rain information is sent twice daily via SMS message to a receiving computer. The received data are used to run a basin model that was developed in HEC‐HMS, which converts precipitation excess to overland flow and channel run‐off.

Different watershed models were developed for different rainfall events. Geomorphic analysis using 3 s SRTM Digital Elevation Model (DEM) processed in a GIS platform was also done to refine the overland flow. The derived hydrographs were used in the HEC‐RAS hydraulic model which has as main output threshold values for the rain‐flood relationship.

Although SRTM DEM that was used for the geomorphic analysis was sufficient for the purpose of the study, higher resolution DEMs can further improve the mapping of spatial extent of flood areas.

The results are used for the forecast of flood and the timely issuance of flood bulletins.

This study is the first to incorporate the involvement of the community in establishing a flood early warning system. The method can also be used as a prototype for other flood models in other parts of the country.

Discusses flood risk in Malaysia, which has increased alarmingly in recent decades largely due to changing physical characteristics of the hydrological system caused by human activities: continued development of already densely populated flood plains, encroachment on flood‐prone areas, destruction of forests and hill slopes development. Flood losses are high but disastrous flood events which occurred in the past as a consequence of rapid development and environmental degradation are forgotten quickly, people choosing to see only the positive benefits of a booming economy while turning a blind eye to their negative effects. Suggests that, within a climate of sustained economic boom, policy makers as well as Malaysians from all walks of life are understandably less concerned about floods than they are about the financial gains that can be reaped from a booming economy. States that official solutions for flood control are largely engineering based and are ineffective to combat extensive monsoon floods.

The purpose of this paper is to prepare flood hazard map and show the extent of flood hazard under climate change scenarios in Woybo River catchment. The hydraulic model, Hydrologic Engineering Center - River Analysis System (HEC-RAS) was used to simulate the floods under future climate scenarios. The impact of climate changes on severity of flooding was evaluated for the mid-term (2041–2070) and long-term (2071–2100) with relative to a baseline period (1971–2000).

Future climate scenarios were constructed from the bias corrected outputs of five regional climate models and the inflow hydrographs for 10, 25, 50 and 100 years design floods were derived from the flow which generated from HEC-hydrological modeling system; that was an input for the HEC-RAS model to generate the flood hazard maps in the catchment.

The results of this research show that 25.68% of the study area can be classified as very high hazard class while 28.56% of the area is under high hazard. It was also found that 20.20% is under moderate hazard and about 25.56% is under low hazard class in future under high emission scenario. The projected area to be flooded in far future relative to the baseline period is 66.3 ha of land which accounts for 62.82% from the total area. This study suggested that agricultural/crop land located at the right side of the Woybo River near the flood plain would be affected more with the 25, 50 and 100 years design floods.

Multiple climate models were assessed properly and the ensemble mean was used to prepare flood hazard map using HEC-RAS modeling.

In Asian monsoon region, rice production has been a key industry for two millennia. This region is blessed of fertile paddy on vast alluvial plain, which has been formulating through erosive/transport/depositional work of rivers around upthrusted high mountains due to orogenic movements of the earth. Rice harvest was the main taxable property since the first step of the human history, and rice production process has made fundamental land use in this region. Catching up with the development of water transport and commodity economy, paddy field covered wide and flat alluvial plains expecting more and more harvest. Rice was brought away for tax or as currency.

Under the guidance of the concept of openness and development, the paper grasps the mechanism of technology spillover in developed countries and analyzes how to better absorb advanced manufacturing technology based on empirical analysis so as to point out the path for the transformation and development of China’s digital manufacturing industry.

The paper constructs the panel data model and further analyzes the impact of international technology spillovers on the transformation and development of the digital manufacturing industry.

This paper measures the level of technology spillover in the Yangtze River Delta region and finds that foreign direct investment (FDI) technology spillover and import trade technology spillover among four provinces and cities show a growth trend from 2010 to 2017. But after 2017, there is a certain degree of decline.

With the advent of industry 4.0, the digital manufacturing industry of all countries in the world is developing with a new attitude, the global technology spillover methods are diverse and the spillover channels have changed greatly, which will affect the transformation and upgrading of China's digital manufacturing industry.

This paper sets out describe the creation of sustainable urban planning concepts based on optimized urban landscape functioning. It gives an account of the formation and transformation processes of natural and artificial streaming structures.

The paper examines the present‐day approaches to the environmental assessment and zoning of urban territories. This was achieved by creating the conceptual methodological basis for the assessment and classification of urban landscapes.

Based on an analysis of the urban planning development of the Moscow agglomeration, principles have been proposed for the shaping of sustainable urban planning structures – landscape planning that can be applied to the management of the territorial growth of large cities and urban agglomerations. First, the shaping and reconstruction of the city structure, including the structure of land management, as well as the mutual arrangement of functional areas, should be based on the need to preserve the axes – the lines and planes of mass, energy and information transfer of landscapes of various orders. Second, the order of preserved landscape axes depends on the organisational complexity of a territory. Third, assessment of the sustainability of the structure of a city and agglomeration should be based on the criteria of river systems along their borders, such as the quantity and composition of water, its temperature, retention of the annual functioning cycle and biodiversity. Finally, urban planning control regimes should be established across the entire city and they should be determined by the position of the territory in the city's landscape structure.

This work will provide a better understanding of integrated environmental systems to enable development of best management practices in the city of Moscow.

Finer sediment particles (silt and clay) transported by rivers carry the major part of nutrient loads by absorption; thus, sediment settling can remove nutrients from the water column. The purpose of this paper is to analyze the relation between reservoir sedimentation and water quality by assessing the reservoir sedimentation process and the sediments’ characteristics.

Bathymetric surveys from 2004 to 2014 were analyzed to assess the sedimentation process. Core samples provided information on a layer-by-layer basis of the sediment deposits, and water samples near the surface and near the bottom provided information on sediment concentration, and adsorbed and dissolved nutrients.

The upstream region of a reservoir is already silted. From 2004 to 2014, the delta evoluted approximately 500 m downstream and the deposits were mainly composed of clay. An area of approximately 1,000 m between the delta and the dam should still be able to continue allowing sediment deposition in the coming years. Most of the nutrients were absorbed into the sediment particles, except for the nitrogen measured in the dry season.

Although analyses of the full cycle of the nutrients were not carried out, the constant sediment trapping of finer sediments and the high rate of absorbed nutrients in the suspended sediment support the hypothesis that the reservoir has removed nutrients from aqueous media by adsorption into sediments.

In the studied case, reservoir sedimentation has led to better water quality downstream.

It is shown in this study that reservoir sedimentation may have positive effects on river water quality.