linear drainage Articles

  • A linear time algorithm to compute the drainage network on grid terrains

    We present a new and faster internal memory method to compute the drainage network, that is, the flow direction and accumulation on terrains represented by raster elevation matrices. The main idea is to surround the terrain by water (as an island) and then to raise the outside water level step by step, with depressions filled when the water reaches their boundary. This process avoids the very ...


    By IWA Publishing

  • Comparative analysis of the outflow water quality of two sustainable linear drainage systems

    Three different drainage systems were built in a roadside car park located on the outskirts of Oviedo (Spain): two sustainable urban drainage systems (SUDS), a swale and a filter drain; and one conventional drainage system, a concrete ditch, which is representative of the most frequently used roadside drainage system in Spain. The concentrations of pollutants were analyzed in the outflow of all ...


    By IWA Publishing

  • What is so hard about drainage modeling?

    Drainage modeling often suffers from the misconception that it is simple, but while it appears obvious that rain water will flow to the lowest point, the physical processes involved are not always well-understood or predictable. Drainage models attempt to predict that part of the water cycle that involves rainfall and its consequences, including potential flooding. Although flooding is, at its ...


    By Innovyze

  • Analysis of groundwater–surface water interaction in horizontal unconfined aquifer bounded by a stream and groundwater divide using a non–linear numerical model

    In this study, a non–linear numerical model was developed to analyse the interaction between the drainage water moving from an unconfined aquifer and a surface water body. This interaction can occur during or after a rainfall event, which can cause the groundwater table to change. At first, a laboratory–scale aquifer model with stream and groundwater divide boundaries was established to examine ...


    By Inderscience Publishers

  • Predicting infiltration pollutant retention in bioretention sustainable drainage systems: model development and validation

    A major problem of increased urbanization is the rise in pollution caused by runoff. A solution to this problem can be found through the use of Sustainable Urban Drainage Systems (SUDS) such as rain gardens. Previous research has focused primarily on hydrologic design including the degree to which groundwater is replenished by these systems and models have been developed to quantify the extent ...


    By IWA Publishing

  • Catchment delineation and morphometric analysis using geographical information system

    The geographical information system (GIS) has emerged as an efficient tool in delineation of drainage patterns of watershed planning and management. The morphometric parameters of basins can address linear, areal and relief aspects. The study deals with the integrated watershed management of Baliya micro-watersheds, located in the Udaipur district of Rajasthan, India. Morphometric analysis in ...


    By IWA Publishing

  • Catchment delineation and morphometric analysis using geographical information system

    The geographical information system (GIS) has emerged as an efficient tool in delineation of drainage patterns of watershed planning and management. The morphometric parameters of basins can address linear, areal and relief aspects. The study deals with the integrated watershed management of Baliya micro-watersheds, located in the Udaipur district of Rajasthan, India. Morphometric analysis in ...


    By IWA Publishing

  • Simulation of wastewater treatment plant within integrated urban wastewater models

    In the federal state of Hesse in Germany the application of an integrated software modelling framework is becoming part of the planning process to attain legal approval for the operation of combined sewer systems. The software allows for parallel simulation of flow and water quality routing in the sewer system and in receiving rivers. It combines existing pollution load model approaches with a ...


    By IWA Publishing

  • Consolidation Behavior of Soils

    Based on Terzaghi´s consolidation theory, percent of consolidation, U, versus the time factor, T, relationship for constant/linear excess pore water pressure distribution, it is possible to generate theoretical log10(H2/t) versus U curves where H is the length of the drainage path of a consolidating layer, and t is the time for different known values of the coefficient of consolidation, c?. A ...


    By ASTM International

  • Tengiz oil fields, Kazakhstan case study

    Client: Chevroil CSG supplied a half kilometre stretch of D400 Translinea to the Oil and Sulphur fields in Kazakhstan. The site, operated by Chevroil, is located on the shores of the Caspian Sea in North West Kazakhstan and covers some 970 square miles. It is the sixth largest oil field in the world holding an estimated 25 Billion barrels. When running at full capacity the area is capable of ...

  • Identification of groundwater potential zone of Nawada district, Bihar (India) – a study based on remote sensing and GIS platform

    A study was conducted to delineate the groundwater potential zones of Nawada district of Southern Bihar using satellite-derived information layers, namely, elevation, slope, drainage density, land use, fractional impervious surface (FIS) and also using existing thematic maps (lithology, soil, pre- and post-monsoon water level) based on the weighted linear combination method. On the basis of the ...


    By IWA Publishing

  • Correlation analysis and threshold value research on the form and function indexes of an urban interconnected river system network

    As urbanization has accelerated, the form of river and lake systems has changed greatly in cities, which has caused variations in the functioning of the interconnected river system network (IRSN). To quantitatively evaluate the influence of the urbanization process on IRSN, the form index system and function index system were established in this study. The form index system involved eight ...


    By IWA Publishing

  • Influences of temperature and moisture on coal sorption characteristics of a bituminous coal from the Sydney Basin, Australia

    Accurate testing of coal isotherms plays a significant role in the areas of coal seam gas drainage, outburst control, CO 2 geo-sequestration, coalbed methane (CBM) and enhanced coalbed methane recovery (ECBM). Coal isotherms were tested with CO 2 and CH 4 gases with a modified indirect gravimetric method in the University of Wollongong (UOW), Australia. The adsorption capacity ...


    By Inderscience Publishers

  • Water erosion and connectivity analysis during a year with high precipitations in a watershed of Argentina

    Soil erosion is a global concern because of its consequences for the environment and the economy of countries. In the Argentine Pampas Region, soil erosion process is a priority issue, although there is little information about sediment concentration (SC) in agricultural catchments. The study aimed at assessing the factors that have a major influence on SC and discussing the dynamics of ...


    By IWA Publishing

  • Missing the Fairway – A Creative Sewer Design through a Private Golf Course

    THE PROBLEMThe City of Sioux Falls, South Dakota is experiencing rapid growth and is being pressured to open additional land for development. A ridgeline on the City’s eastern border prevents the extension of the existing gravity sewer system and creates the need for a completely new system. As shown in Figure 1, the new $31 million dollar system will extend from the ridgeline eastward to the Big ...

  • Developing optimum solutions to flooding

    Developing optimum solutions to flooding With a very long period of wet weather in the summer overlaid by intense rainfall, 2007 was the wettest summer in the UK on record. This unusual weather pattern resulted in very high localised runoff, with three events in England exceeding the 1 in 100 year return period over that time – some of the worst flooding that has ever occurred in ...


    By Innovyze

  • Tunnel objects

    SoilVision Systems Ltd. is proud to announce the implementation of tunnel objects in the latest release of SVFlux and SVHeat. The tunnel objects extend the current capabilities of the software to the modeling of irregular but linear 2D and 3D objects beneath the ground. The implementation of tunnels opens up new types of numerical models which can be solved by geotechnical and hydrological ...


    By SoilVision Systems Ltd.

  • Peristaltic Pumps play key role in rectifying the pH balance of mine water

    After decades of uncontrolled industrial (mining) activities, water supply is under serious threat. Studies show that acid water levels in the country's mines are rising at a staggering average rate of 0.59 m/day. The water situation is in fact threatening the population’s survival. At the heart of resolving this problem are the treatment of water and wastewater. This article looks at ...

  • Macomb county emergency repair case study

    Sinkhole Repaired in Michigan Township Clinton Township, like most communities, can provide us with case studies in evolving infrastructure needs. On July 22, 1782, more than a year before the American Revolutionary War ended, the first settlement was founded on the site of present-day Clinton Township, Mich., near the Clinton River. The lower bluff, which is close to the river, ...


    By Hobas Pipe USA

  • UnderDuct contributes to LEED design at library (FRP)

    Application Spotlight Location: Eastern Avenue Library, Davenport, IA UnderDuct Details: Over 1500-linear feet of UnderDuct from 36" diameter down to 8" diameter Project Details (from Davenport Library Press Release): A successful public and private collaboration raised $8.2-million toward construction of Eastern Avenue Branch ...


    By Monoxivent

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