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

  • Low energy mixing to optimize anaerobic digestion at the Kitchener WWTP

    The existing Kitchener Wastewater Treatment Plant (WWTP) is a conventional secondary treatment facility, with a rated capacity of 122,745 mVd. The plant is comprised of two separate secondary treatment plants (Plant 1 and Plant 2) served by a common headworks facilities and primary clarifier facilities. Plant 1 was constructed in the early 1960s and Plant 2 was constructed in the mid-1970s. Both ...

  • 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

  • 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

  • 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

  • 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

  • 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

  • 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.

  • 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

  • A composite framework of river sustainability: integration across time, space and interests in the Yellow River and Ganges River

    The concept of sustainability has a key component of balancing developmental needs of the present and the future, what we call the time element (TE). Integrated Water Resources Management (IWRM) has emerged as a paradigm of river governance, balancing different interests and needs. This we call the Interest Element (IE). This paper explores how IWRM incorporates sustainability, leading to ...


    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 ...

  • A system dynamics-based conflict resolution model for river water quality management

    Conflict is a disagreement among individuals or groups that differ in attitudes, beliefs, values or needs. Contemporary water resources management is a combined process of sharing water and resolving conflicts among decision makers and stakeholders. Stakeholders in this context refer to individuals, organizations, or institutions that have stakes in the outcome of decision related to water or ...


    By University of Tehran

  • Evaluation of the quality and self purification potential of tajan river using qual2e model

    Industrial development accompanied by population and consumption growth has imposed heavy pollution loads to natural resources. Regarding finite origin of such resources, maintenance and monitoring of current ones must be thoroughly considered. Water is among the most significant resources that must be preserved. This fact is more highlighted when we consider that Iran with current population ...


    By University of Tehran

  • Groundwater Flow Modeling of Gundal Sub-basin in Kabini River Basin, India

    Abstract: Accurate estimation of groundwater recharge is extremely important for proper management of groundwater system especially in semi-arid regions. Many different approaches exist for estimating recharge. This study deals with groundwater modeling for assessing the groundwater balance and estimating the recharge in the Gundal sub-basin, which is located in a semi-arid portion of the Kabini ...


  • Generation of 10-day flow of the Brahmaputra River using a time series model

    Time series models are used in hydrology for the generation of river flow data. The development of such a model, namely deseasonalized Autoregressive Moving Average (ARMA), for the generation of 10-day flows of the Brahmaputra River in Bangladesh is described. The model was fitted following systematic stages of identification, estimation and diagnostic checking of model building. A negative ...


    By IWA Publishing

  • A validation of river routing networks for catchment modelling from small to large scales

    Underpinning all hydrological simulations is an estimate of the catchment area upstream of a point of interest. Locally, the delineation of a catchment and estimation of its area is usually done using fine scale maps and local knowledge, but for large-scale hydrological modelling, particularly continental and global scale modelling, this level of detailed data analysis is not practical. For ...


    By IWA Publishing

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