hydrologic engineering Articles
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Reconciling hydrology with engineering
Hydrology has played an important role in the birth of science. Yet practical hydrological knowledge, related to human needs for water storage, transfer and management, existed before the development of natural philosophy and science. In contemporary times, hydrology has had strong links with engineering as its development has been related to the needs of the design and management of water ...
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Downscaling technique uncertainty in assessing hydrological impact of climate change in the Upper Beles River Basin, Ethiopia
We investigate the uncertainty associated with downscaling techniques in climate impact studies, using the Upper Beles River Basin (Upper Blue Nile) in Ethiopia as an example. The main aim of the study is to estimate the two sources of uncertainty in downscaling models: (1) epistemic uncertainty and (2) stochastic uncertainty due to inherent variability. The first aim was achieved by driving a ...
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Improving calibration of two key parameters in Hydrologic Engineering Center hydrologic modelling system, and analysing the influence of initial loss on flood peak flows
Parameter calibration is a key and difficult issue for a hydrological model. Taking the Jinjiang Xixi watershed of south-east China as the study area, we proposed methods to improve the calibration of two very sensitive parameters, Muskingum K and initial loss, in the Hydrologic Engineering Center hydrologic modelling system (HEC-HMS) model. Twenty-three rainstorm flood events occurring from ...
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Assessing the impact of arid area urbanization on flash floods using GIS, remote sensing, and HEC-HMS rainfall–runoff modeling
This study uses an integrated approach, bringing together geographic information system (GIS), remote sensing, and rainfall–runoff modeling, to assess the urbanization impact on flash floods in arid areas. Runoff modeling was carried out as a function of the catchment characteristics and the maximum daily rainfall parameters. Land-use types were extracted from the supervised classification of ...
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Comparing the capability of distributed and lumped hydrologic models for analyzing the effects of land use change
Empirically based lumped hydrologic models have an extensive track record of use for various engineering applications. Physically based, multi-dimensional distributed models have also been in development and use for many years. Despite the availability of high resolution data, better computational resources and robust, numerical methods implemented in such models, their usage is still limited, ...
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Estimating the index flood with continuous hydrological models: an application in Great Britain
Estimating peak river discharge, a critical issue in engineering hydrology, is essential for designing and managing hydraulic infrastructure such as dams and bridges. In the UK, practitioners typically apply the Flood Estimation Handbook (FEH) statistical method which estimates the design flood as the product of a relatively frequent flow estimate (the index flood, IF) and a regional growth ...
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Ecowise Environmental
Ecowise Environmental is an environmental consultancy company that specialises in Field hydrology, as practitioners and trainers, Engineering Hydrology and Laboratory analytical and interpretive work. Ecowise has a staff of approximately 60 people and is wholly Australian owned as a subsidiary business of ACTEW Corporation. Ecowise has broad experience across Australia as well as in Papua New ...
By KISTERS
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Facing the challenge of extreme climate: the case of Metropolitan São Paulo
Climate variability has always posed important challenges to water resources planners and engineers. Recent hydrologic data from different parts of the world show that the use of traditional stationary series statistical methods to assess risk and uncertainty may not produce reliable estimates. In particular, the 2014–2015 drought in Metropolitan São Paulo that was followed by major flooding ...
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A novel hybrid neural network based on continuity equation and fuzzy pattern-recognition for downstream daily river discharge forecasting
Forecasting of river discharge is crucial in hydrology and hydraulic engineering owing to its use in the design and management of water resource projects. The problem is customarily settled with data-driven models. In this research, a novel hybrid model which combines continuity equation and fuzzy pattern-recognition concept with artificial neural network (ANN), is presented for downstream ...
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Water Resources Management and Modeling
Hydrology is the science that deals with the processes governing the depletion and replenishment of water resources of the earth's land areas. The purpose of this book is to put together recent developments on hydrology and water resources engineering. First section covers surface water modeling and second section deals with groundwater modeling. The aim of this book is to focus attention on the ...
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Estimation and monitoring non-point source pollutant loads: an object-oriented hydro-information approach
Numerous hydrologic/water quality models of run-off and soil erosion have been coupled to Geographical Information System (GIS) to determine Non-Point Source (NPS) pollutants from watersheds. Hydrology and water-resource engineering rely on observations of environmental conditions and the accuracy of environmental data. This paper focuses on estimation and monitoring of NPS pollutant loads based ...
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10 tips to become ecosystem smart in DRR interventions
10 tips developed by Wetlands International for policy makers and practitioners to better integrate the management of ecosystems and natural resources in their DRR work. 1. Build understanding and capacity on ecosystems and the services they deliver Build capacity of government at all levels, communities and civil society organisations on the services that ecosystems deliver and how these ...
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Climate change: More intense rains could swamp Chicago`s aging sewers
In a city built on a swamp, where rainstorms already flood basements and force sewage into Lake Michigan and local streams, climate change could make Chicago's chronic water pollution woes even worse. Researchers hired by Mayor Richard Daley's office estimate that intense rainfall will happen more frequently in the not-so-distant future because of warming global temperatures, challenging the ...
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Runoff model validation for large–scale afforestation in arid land
As a countermeasure against global warming, large scale afforestation of arid land which is hardly used for crop cultivation has been receiving attention. By large scale afforestation, atmospheric CO2 will be fixed into plants. In arid land, however, most of the rainwater is lost by runoff and evaporation. Effective use of rainwater is required for afforestation. Thus, we made an original runoff ...
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A heterogeneous computing accelerated SCE-UA global optimization method using OpenMP, OpenCL, CUDA, and OpenACC
The shuffled complex evolution optimization developed at the University of Arizona (SCE-UA) has been successfully applied in various kinds of scientific and engineering optimization applications, such as hydrological model parameter calibration, for many years. The algorithm possesses good global optimality, convergence stability and robustness. However, benchmark and real-world applications ...
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A river system modelling platform for Murray-Darling Basin, Australia
Global climate change and local development make water supply one of the most vulnerable sectors in Australia. The Australian government has therefore commissioned a series of projects to evaluate water availability and the sustainable use of water resources in Australia. This paper discusses a river system modelling platform that has been used in some of these nationally significant projects. ...
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Get more out of Water Resources Engineering Models
The effort required to develop water resources engineering models can be significant. But once developed, in many instances the models are only evaluated for a limited, or a single set of conditions. The results and predictions obtained from these evaluations are the ones used in design, presented in reports and conveyed to decision makers and the public. This approach might serve the immediate ...
By Innovyze
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Get More Out of Water Resources Engineering Models
by Venu Kandiah, PhD, P.E. Senior Water Resources Engineer The effort required to develop water resources engineering models can be significant. But once developed, in many instances the models are only evaluated for a limited, or a single set of conditions. The results and predictions obtained from these evaluations are the ones used in design, presented in reports and conveyed to decision ...
By Innovyze
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