surface water modeling Articles

  • The impact of projected changes in climate variability on the reliability of surface water supply in Scotland

    Projected changes in precipitation and evapotranspiration under climate change and their impacts on the reliability of six water storage reservoirs and two river intake schemes in Scotland are examined. A conceptual rainfall–runoff model was used to simulate catchment runoff which, together with evapotranspiration, served as inputs into a reservoir model. Outputs from a regional climate ...


    By IWA Publishing

  • A comparative study of single factor and multivariate statistical methods for surface water quality assessment

    Water quality assessment is an essential part of water resources management. Different methods, including the single factor (SF) method and multivariate analysis, employed in assessing water quality can give different results. In this study, SF methods and multivariate analysis – including discriminant analysis (DA) and the distance function model (DFM) – were used to assess the ...


    By IWA Publishing

  • Evolutionary network flow models for obtaining operation rules in multi-reservoir water systems

    Obtaining operation rules (OR) for multi-reservoir water systems through optimization and simulation processes has been an intensely studied topic. However, an innovative approach for the integration of two approaches – network flow simulation models and evolutionary multi-objective optimization (EMO) – is proposed for obtaining the operation rules for integrated water resource ...


    By IWA Publishing

  • Indestructible Pumps for Clean Water

    Sulzer pumps are used in the production of drinking water in many cities around the world. The special qualities that these pumps possess can be seen at the Zurich Municipal Water Utility. There, the operators have to cope with rising land and energy prices and a challenging topography. A small water flea plays a major role in Zurich. It swims around in a container of drinking water with some of ...


    By Sulzer Management Ltd

  • Water supply in Jordan under drought conditions

    This paper discusses the Mujib Dam reservoir's storage during the drought years of 2007–2009. It has been concluded that the policy of unplanned water release during the dry year 2007, when little attention was paid to the possibility of a continuation of the drought, contributed to the remarkable lack of surface water storage during 2008, another dry year. For better management and planning, ...


    By IWA Publishing

  • South feather water and power underscores commitment to clean water, efficient power with Abanaki

    California Utility Installs Model 8 Oil Grabber in Power Plant The mission of South Feather Water and Power (SFWP) is two fold: to provide cost effective power with minimal impact on the environment; and to ensure a dependable supply of safe, quality drinking water as well as a reliable supply of water for agricultural users. In all instances, the California-based utility is committed to ...


    By Abanaki Corporation

  • Prediction of chlorophyll-a in the Daning River of Three Gorges Reservoir by principal component scores in multiple linear regression models

    After the impoundment of the Three Gorges Reservoir (TGR) since 2003, eutrophication has occurred and has become severe in Daning River. To predict chlorophyll-a (Chl-a) levels, the relationships between Chl-a and 11/13 routine monitoring data on water quality and hydrodynamics in Daning River were studied by principal component scores in the multiple linear ...


    By IWA Publishing

  • Providing Skimming Solutions For Industries Worldwide

    Product Overview Skimall Model AG25 "Mini David" Oil Skimming System The Model AG25 Oil Skimming System is designed to remove free-floating oils, grease and other material from the surface of water in indoor and outdoor applications where space is limited. The compact design makes it ideal for applications including oil/water separators, "tramp oil" removal from ...


    By SkimTech Inc.

  • Sampling/stochastic dynamic programming for optimal operation of multi-purpose reservoirs using artificial neural network-based ensemble streamflow predictions

    Due to limited water resources and the increasing demand for agricultural products, it is significantly important to operate surface water reservoirs optimally, especially those located in arid and semi-arid regions. This paper investigates uncertainty-based optimal operation of a multi-purpose water reservoir system by using four optimization models. The models include dynamic programming (DP), ...


    By IWA Publishing

  • The elimination of fecal coliforms and e. coli in lagoons

    Many horse racetracks throughout the world are designed to drain water from the track into a lagoon that is located in the infield of the track. Due to the track being predominantly used for horse racing, there is a high amount of fecal coliform, especially of the Escherichia coli species, bacteria in the water that drains from the track. During the racing season, fecal coliform and E. coli ...


    By Reliant Water Technologies

  • SolarBee Technical Bulletin

    A. SOLARBEE OVERVIEW 1. Origin of the SolarBee. Pump Systems, Inc. (PSI) developed, built and installed its first solar powered mixer in Dickinson, ND, in the summer of 1998. It was installed into a 30 acre x 13 foot deep municipal wastewater reservoir which had a long history of toxicity associated with ammonia, odor, and stratification problems. In six weeks the entire reservoir cleared up to ...


    By Medora Corporation

  • Kerr-McGee dredging case study

    Application:Clean and dredge paint pigment residuals Dredge Used: LWT 7MAU Series Pit Hog™ Dredge Project Summary: Electric manned automated dredge with 3 Krebs cyclones with a capacity of 2,100 gpm, magnetic flow meter to monitor pump performance, slurry density meter to maintain consistent percent solids by varying traverse speed, and ...

  • Daimer Launches Vapor Steam Cleaner For Airport Maintenance

    Daimer Industries, Inc.®, the nationally and internationally reputed American brand of 700+ industrial and commercial grade cleaning systems, including power enhanced vapor steam cleaner equipment, portable carpet steam cleaner machines, industrial car wash machines, and many other technologies, is debuting the KleenJet® Ultra 5000CVP – ATIS® industrial steam cleaner to airports ...


    By Daimer Industries Inc.

  • Case Study: Barboursville, the “Best Little Village in the state,” just got better

    Barboursville, which bills itself as the “Best Little Village in the State of West Virginia,” has just completed an impressive upgrade to its wastewater treatment lagoon.  What makes the upgrade impressive?  Try this: Increased capacity of the existing lagoon from 600,000 gpd to 1,500,000 gpd. Had no disruption of treatment during construction. Total project costs of less than ...


    By Environetics, Inc.

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