river modeling Articles

  • River modeling

    When developing regional groundwater models, it is often necessary to represent complex river systems which may exist over a drainage basin. In order to simplify the representation of such river systems in a 3D regional groundwater model, SoilVision Systems Ltd. has implemented a special Rivers object which can be used to represent complex river systems on the top surface of a numerical model. ...


    By SoilVision Systems Ltd.

  • Impact of IT on river modeling

    Background Models of river channels and river flows have been used to good effect for many years. HR Wallingford Group, in the UK, has been building physical models of rivers for nearly 60 years. Some years ago, it was predicted that physical modeling would soon cease to exist, to be entirely replaced by computer models. This has not happened - in fact, the demand for physical models is greater ...


    By Innovyze

  • Senix Water Level Sensors Drive Irrigation Automation Project

    Australia’s Water Crisis Irrigation management is serious business in Australia especially within the Murray-Darling Basin, a 1,000,000 square kilometer watershed that is home to Australia’s most productive agricultural land. The basin’s 23 rivers have ...


    By Senix Corporation

  • River Hydrodynamic Modelling - The Practical Approach

    A review of the publication ‘Pendekatan Awal Menggunakan InfoWorks RS’ by En Abdul Jalil Hassan, NAHRIM and Andrew Brown, Wallingford Software Sdn Bhd. This informative publication is intended as a working guide for anyone undertaking the hydrodynamic modeling of river systems. By way of illustration, it uses the Juru River in Malaysia as an example river and Wallingford Software’s InfoWorks ...


    By Innovyze

  • A control model for the mouth of the River Murray, South Australia

    The River Murray drains one-seventh of the Australian continent, but in 1991 the mouth closed for three months. The last 1000 km of the river system is controlled by weirs and barrages, and consequently it is feasible to use river flow to control the size of the river mouth. This paper demonstrates how recursive estimation techniques have been applied to the historical time series of monthly ...


    By Inderscience Publishers

  • Modelling emissions of perfluorinated chemicals to the Danube River Basin

    The emissions of two perfluoroalkyl acids (PFAAs) into the Danube River Basin have been estimated in a test of four different hypotheses regarding the factors affecting those emissions. The results were used to simulate water concentrations for comparison with measured data. The researchers found that incorporating wastewater treatment information and wealth distribution alongside population data ...

  • Modeling groundwater upwelling as a control on river ice thickness

    The Tanana River flows through interior Alaska, a region characterized by discontinuous permafrost. Studies link degrading permafrost to increased winter river discharge due to greater groundwater (GW) recharge increasing GW input to river baseflow. In winter, interior Alaskan rivers are exclusively fed by GW, which provides an external source of heat. In fact, some portions of rivers fed by GW ...


    By IWA Publishing

  • InfoWorks RS models Mexican river flooding

    Untitled Document The CNA Chiapas ...


    By Innovyze

  • A hydrodynamic water quality model for propagation of pollutants in rivers

    Numerical modelling can be a useful tool to assess a receiving water body's quality state. Indeed, the use of mathematical models in river water quality management has become a common practice to show the cause-effect relationship between emissions and water body quality and to design as well as assess the effectiveness of mitigation measures. In the present study, a hydrodynamic river water ...


    By IWA Publishing

  • Modeling river discharge rates in California watersheds

    River discharge rates across all California's watershed have been modeled using the NASA version of the Carnegie-Ames-Stanford Approach (CASA) ecosystem model coupled with a surface hydrologic routing scheme previously called the Hydrological Routing Algorithm (HYDRA). To assess CASA-HYDRA's capability to estimate actual water flows in extreme and non-extreme precipitation years, we have ...


    By IWA Publishing

  • Dredging the Hudson River

    Dredging the Hudson River SRS Crisafulli follows the activities of our larger corporate cousins tackling tough environmental remediation dredging projects.  One of the toughest is the Hudson River EPA PCB GE cleanup. Watch ...


    By SRS Crisafulli, Inc.

  • Studying of flow model and bed load transport in a coarse bed river: case study – Aland River, Iran

    This paper describes a mathematical model which solves the 1D unsteady flow over a mobile bed. The model is based on the Richtmyer second-order explicit scheme. Comparison of the model results with the experimental flume data for alluvial steady flow (aggradation due to overloading) and unsteady flow shows that, by using the two-step method of Richtmyer, one can solve the equations, governing the ...


    By IWA Publishing

  • River discharge in the Kone River basin (Central Vietnam) under climate change by applying the BTOPMC distributed hydrological model

    The impact of climate change on local discharge variability is investigated in the Kone River basin located in Central Vietnam. In this study, historical and predicted river discharge trends are discussed. The predicted discharge is simulated using the BTOPMC model based on the A1B scenario as a scientific basis for socioeconomic development and integrated water resource management in the Kone ...


    By IWA Publishing

  • Modelling present and future Po river interactions with alluvial aquifers (Low Po River Plain, Italy)

    A modelling study on a multi-layered confined/unconfined alluvial aquifer system was performed to quantify surface water/groundwater interactions. The calibrated groundwater flow model was used to forecast climate change impacts by implementing the results of a downscaled A1B model ensemble for the Po river valley. The modelled area is located in the north-western portion of the Ferrara Province ...


    By IWA Publishing

  • Cost-effective solutions for water quality improvement in the Dommel River supported by sewer–WWTP–river integrated modelling

    This project aims at finding cost-efficient sets of measures to meet the Water Framework Directive (WFD) derived goals for the Dommel River (The Netherlands). Within the project, both acute and long-term impacts of the urban wastewater system on the chemical and ecological quality of the river are studied with a monitoring campaign in the urban wastewater system (wastewater treatment plant and ...


    By IWA Publishing

  • Water Quality Parameters Along Rivers

    Water samples have been collected from a part of Surma River along different points and analyzed for various water quality parameters during dry and monsoon periods. Effects of industrial wastes, municipal sewage, and agricultural runoff on river water quality have been investigated. The study was conducted within the Chattak to Sunamganj portion of Surma River, which is significant due to the ...

  • Error analysis for river water quality prediction using back propagation modelling

    The purpose of this research is to describe the errors of Back Propagation (BP) technique that could be applied in river water quality prediction. ANN was trained by using the upriver data to forecast the downriver quality in two approaches of long-distance forecasting and short-distance forecasting respectively. It showed that the predicted results from short-distance approach were more accurate ...


    By Inderscience Publishers

  • Developing a water quality management model for karun and dez rivers

    More than one third of Iran’s total surface water of 94 billion m3 is flowing into the Khuzestan province but ironically most of its inhabitants are suffering from poor quality drinking water, especially during the summer months. More than 70% of the four million population of the khuzestan province, which includes the inhabitants of the provincial capital city of Ahvaz and the two major port ...


    By University of Tehran

  • A mathematical model to predict nickel concentration in karaj river sediments

    The contamination of surface waters through human activities has been increased over the past years as population density has increased. To fully understand the anthropogenic impact on an ecosystem, long-term data from chemical, physical and biological indicators are needed. To many people, heavy metal pollution is a problem associated with areas of intensive industry. Metals, such as nickel and ...


    By University of Tehran

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