October 1, 2020 Thesis Open Access

SOFONYASE BEKELE ZEWDIE

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  <identifier identifierType="DOI">10.20372/nadre:4876</identifier>
  <creators>
    <creator>
      <creatorName>SOFONYASE BEKELE ZEWDIE</creatorName>
    </creator>
  </creators>
  <titles>
    <title>ESTIMATION OF SEDIMENT YIELD USING SWAT MODEL: A CASE OF SOKE RIVER WATERSHED, ETHIOPIA</title>
  </titles>
  <publisher>Zenodo</publisher>
  <publicationYear>2020</publicationYear>
  <dates>
    <date dateType="Issued">2020-10-01</date>
  </dates>
  <resourceType resourceTypeGeneral="Text">Thesis</resourceType>
  <alternateIdentifiers>
    <alternateIdentifier alternateIdentifierType="url">https://nadre.ethernet.edu.et/record/4876</alternateIdentifier>
  </alternateIdentifiers>
  <relatedIdentifiers>
    <relatedIdentifier relatedIdentifierType="DOI" relationType="IsVersionOf">10.20372/nadre:4875</relatedIdentifier>
    <relatedIdentifier relatedIdentifierType="URL" relationType="IsPartOf">https://nadre.ethernet.edu.et/communities/aastu</relatedIdentifier>
    <relatedIdentifier relatedIdentifierType="URL" relationType="IsPartOf">https://nadre.ethernet.edu.et/communities/zenodo</relatedIdentifier>
  </relatedIdentifiers>
  <rightsList>
    <rights rightsURI="http://www.opendefinition.org/licenses/cc-by">Creative Commons Attribution</rights>
    <rights rightsURI="info:eu-repo/semantics/openAccess">Open Access</rights>
  </rightsList>
  <descriptions>
    <description descriptionType="Abstract">&lt;p&gt;Soil erosion is a process of detachment/dispatch/ of soil particles due to rain drop and&lt;br&gt;
runoff. This results deposition of sediment causing reduced flood carrying capacity affects&lt;br&gt;
water qualify instability of structure and natural streambeds and banks. For accurate and&lt;br&gt;
easy estimation of runoff and sediment yield, it can be done by using physical based&lt;br&gt;
continuous hydrological model. Among the many hydrological model Soil and Water&lt;br&gt;
Assessment Tool (SWAT) is the more promising model for simulations in predominant&lt;br&gt;
agricultural watershed. Moreover, the model is better in assessing both spatial and&lt;br&gt;
temporal variability of the hydrological process under both small and very large&lt;br&gt;
watershed. This study is about the estimation of sediment yield and reduction of sediment&lt;br&gt;
yield with appropriate mitigation measures. The input data for the model were obtained&lt;br&gt;
from different organizations; After the input data are organized and assembled it was used&lt;br&gt;
for model simulation. Later simulation result was calibrated and validated using&lt;br&gt;
Calibration Uncertainty Procedure (SWAT-CUP). The efficiency evaluation criteria&amp;rsquo;s&lt;br&gt;
Coefficient of determination (R2), and the Nash-Sutcliffe simulation efficiency (ENS) were&lt;br&gt;
used for performance evaluation of the model. The result from the calibration and&lt;br&gt;
validation of both flow and sediment were greater than 0.7; this indicated that there was&lt;br&gt;
very good agreement between observed and simulated outputs. The stream flow and&lt;br&gt;
sediment yield of soke watershed was quantified&lt;/p&gt;</description>
  </descriptions>
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