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    Effective Saturated Hydraulic Conductivity of an Infiltration-Based Stormwater Control Measure

    Source: Journal of Sustainable Water in the Built Environment:;2015:;Volume ( 001 ):;issue: 004
    Author:
    Peter T. Weiss
    ,
    John S. Gulliver
    DOI: 10.1061/JSWBAY.0000801
    Publisher: American Society of Civil Engineers
    Abstract: Infiltration rates into field soils have a large variability, and a statistical value that represents the overall infiltration in a site is needed. The Green-Ampt equation was used to develop a one-dimensional, multisoil model to predict the water surface drawdown in an infiltration-based stormwater control measure (SCM) as a function of time. Results were used to compare the accuracy of assuming the SCM was comprised of a single soil with an overall effective saturated hydraulic conductivity set equal to (1) the geometric mean of the spatially distributed hydraulic conductivity values of the multisoil SCM, (2) the arithmetic mean of the hydraulic conductivity values, and (3) a best-fit hydraulic conductivity value. Results indicated that the use of the geometric mean consistently underestimated infiltration and use of the arithmetic mean consistently overestimated infiltration. A relationship to more consistently and accurately predict the best-fit value of saturated hydraulic conductivity used a weighted sum of 0.32 times the arithmetic mean and 0.68 times the geometric mean.
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      Effective Saturated Hydraulic Conductivity of an Infiltration-Based Stormwater Control Measure

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    http://yetl.yabesh.ir/yetl1/handle/yetl/81392
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    contributor authorPeter T. Weiss
    contributor authorJohn S. Gulliver
    date accessioned2017-05-08T22:29:10Z
    date available2017-05-08T22:29:10Z
    date copyrightNovember 2015
    date issued2015
    identifier other46484954.pdf
    identifier urihttp://yetl.yabesh.ir/yetl/handle/yetl/81392
    description abstractInfiltration rates into field soils have a large variability, and a statistical value that represents the overall infiltration in a site is needed. The Green-Ampt equation was used to develop a one-dimensional, multisoil model to predict the water surface drawdown in an infiltration-based stormwater control measure (SCM) as a function of time. Results were used to compare the accuracy of assuming the SCM was comprised of a single soil with an overall effective saturated hydraulic conductivity set equal to (1) the geometric mean of the spatially distributed hydraulic conductivity values of the multisoil SCM, (2) the arithmetic mean of the hydraulic conductivity values, and (3) a best-fit hydraulic conductivity value. Results indicated that the use of the geometric mean consistently underestimated infiltration and use of the arithmetic mean consistently overestimated infiltration. A relationship to more consistently and accurately predict the best-fit value of saturated hydraulic conductivity used a weighted sum of 0.32 times the arithmetic mean and 0.68 times the geometric mean.
    publisherAmerican Society of Civil Engineers
    titleEffective Saturated Hydraulic Conductivity of an Infiltration-Based Stormwater Control Measure
    typeJournal Paper
    journal volume1
    journal issue4
    journal titleJournal of Sustainable Water in the Built Environment
    identifier doi10.1061/JSWBAY.0000801
    treeJournal of Sustainable Water in the Built Environment:;2015:;Volume ( 001 ):;issue: 004
    contenttypeFulltext
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    DSpace software copyright © 2002-2015  DuraSpace
    نرم افزار کتابخانه دیجیتال "دی اسپیس" فارسی شده توسط یابش برای کتابخانه های ایرانی | تماس با یابش
    yabeshDSpacePersian