A Comprehensive Assessment of Sediment Transport in Greater-Zab River, Iraq

Abstract

The requirement for efficient management of natural resources has recently risen. Consequently, the requirements for a hydrological analysis study is a crucial instrument for managing watershed natural resources-means the region of interest must be thoroughly investigated and evaluated. This study employs morphometric analysis to examine the Greater-Zab watershed in the northeastern part of Iraq. The Greater-Zab River serves as the case study because no sediment observations have been made there at all. Prior investigations have been conducted to gather data on the soil composition and anticipated hydraulic parameters at Km. 73.000 of the Basin, specifically upstream of Ninawa Governorate. These investigations were carried out in relation to the design discharge of 330 m3/s. The main goal of this research is to employ various widely-used methodologies globally to assess an alluvial channel’s capacity to carry the entire bed-material load, using the Greater-Zab River Basin as a case study. There were five different formulas that were utilised in order to get an estimate of the bed’s material load. Larsen’s Observational Methodology [LOM], Karim and Kennedy’s Regression Method [KKRM], Engelund and Hansen’s Stream Power Technique [EHSPT], Akers and White Stream Power Technique [AWSPT], and Yang Stream Power Technique with Dimensionless [YSPTD] are the names of these studies. Taking into account Yang’s 1973 ruling, the study found that 1)The anticipated bed-material load at the site under consideration is roughly (205000 m3/Year); 2) Variations in the outcomes of various formulas used to anticipate the amount of sediment in rivers by a certain factor are expected; and 3) It is crucial to measure the amount of sediment load in significant areas, such as those that support property and life in a major metropolis (as in the case study).