Applying Ground Penetrating Radar Current Meter Devices for Measuring Lesser Zab River Discharge in Taqtaq Area, Iraq

The purpose of this study is to estimate the discharge of Lesser Zab River in Taqtaq area, Iraq. Area - velocity method was used for measuring the discharge of the river, the cross section of the river was divided in to 38 elemental strips of equal width (b). Midsection method was used for determining the discharge in each elemental strip. In this study GPR (Ground Penetrating Radar) technique was used for measuring the depth of the river in Taqtaq area, current meter device was used for measuring the water velocity in different depths, 0.6d for shallow depths and 0.2d & 0.8d for deep waters. The results indicated that width of the river is 41 meter. The highest depth of the river is 3.4 meter, width of each sub-section is 2 meter, and on both sides of the river 1.5 meter is not considered for measurements. The average velocity in subsections ranges between 0.15 - 1.832 m/s., the minimum discharge is in sub section number 1 which is equal to 0.12m3/s and the maximum discharge is in sub section number 13 which is equal to 12.787 m
³
/s. The total discharge of the river is 99.29 m
³
/s.