American Journal of Water Science and Engineering

Volume 5, Issue 4, December 2019

  • Characterization of Groundwater Discharge to Rivers in the Shire River Basin, Malawi

    Laura Kelly, Douglas Bertram, Robert Kalin, Cosmo Ngongondo

    Issue: Volume 5, Issue 4, December 2019
    Pages: 127-137
    Received: 10 October 2019
    Accepted: 4 November 2019
    Published: 8 November 2019
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    Abstract: This study investigates groundwater discharge to rivers in the Shire River Basin, Malawi, using the base flow index (BFI) approach. The BFI represents the baseflow component of a river and is often used as a proxy indicator of groundwater discharge to a river. The smoothed minima method was applied to river flow data from 15 gauges in the Basin (ra... Show More
  • Hydrologic and Structural Safety Evaluation of Aged Concrete Gravity Dam Using Finite Element Method

    Tafesse Fitensa, Medhanye Biedebrhan, Sisay Simachew

    Issue: Volume 5, Issue 4, December 2019
    Pages: 138-154
    Received: 9 August 2019
    Accepted: 6 November 2019
    Published: 17 November 2019
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    Abstract: History shows that several dams were failed and discharged the stored water which causes incalculable damage on life and property. Several researches disclosed that the methods used to design and re-evaluate concrete gravity dams after the 1970s have shown significant advancement. This starts when contemporary structural analysis methods such as a ... Show More
  • Responses of Soybean (Glycine max L.) Varieties to NPS Fertilizer Rates at Bako, Western Ethiopia

    Dame Oljirra, Tasisa Temesgen

    Issue: Volume 5, Issue 4, December 2019
    Pages: 155-161
    Received: 27 September 2019
    Accepted: 6 November 2019
    Published: 27 November 2019
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    Abstract: Soybean (Glycine max. L) is among the most important legume crops produced in western Ethiopia. However, declining soil fertility and poor soil fertility management practices decrease yields. A field experiment was conducted in Bako Agricultural Research center during 2018 main cropping season to investigate the effect of NPS rates on yield and yie... Show More
  • Modelling Hydrological Processes on Agricultural Used Land for Optimisation of Small Hydropower Cascade in the (Upper) Wuyang River Basin of Southwest China

    Mariusz Merta, Harald Sommer, Zhengyue Jin

    Issue: Volume 5, Issue 4, December 2019
    Pages: 162-173
    Received: 4 November 2019
    Accepted: 11 December 2019
    Published: 23 December 2019
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    Abstract: Reliable estimations of stream flow generated from catchments are required as part of the information sets that help policy makers making reasonable decisions on water planning and management. The characteristics of the streamflow time series that influence water resources system modelling and planning can include the sequencing of flows on daily o... Show More
  • Predicting Aquifer Storage Properties Integrating Geoeletric Methods with Dynamically Derived Geomechanical Parameters in Parts of Cross River State, Nigeria

    Fidelis Ankwo Abija

    Issue: Volume 5, Issue 4, December 2019
    Pages: 174-183
    Received: 9 December 2019
    Accepted: 8 January 2020
    Published: 11 February 2020
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    Abstract: Predicting subsurface rocks’ storage properties is a fundamental problem of groundwater prospecting and potential evaluation for planning of long term abstraction wells. Water in aquifers is stored and or released from elastic storage and gravity drainage. Aquifer storage parameters are traditionally determined from pumping tests data which are sel... Show More