The Study of Some Hydraulic Parameters of Tigris River Water Upstream AL-Kut Dam

Abstract

         The study was conducted on the Tigris river in front of Kut dam, during the period from August 2018 to June 2019 for purpose of estimating the accumulated sediments in Tigris river at upstream AL-kut dam, for a distance 500 m, starting from the installed security block at the front of AL-Kut dam at a distance of 350 m. The river section was divided into six cross sections; the distance between one section to another was 100m. The first section was installed alongside the security block at a distance of 10 m. the MQ instrument converted into a motorboat and strapped to a laptop computer for the purpose of measuring the flow and velocity of the current and some hydraulic parameters of the section of river. Samples of the water of Tigris river were taken from three locations for each section, the first at the right bank of the river, the second in the middle of the river and the third one at the left bank. The two points for each site were at 0.2, 0.8 water depth by the sample taking device. The results were shown as follows: the water discharge values of studied sections ranged from 117.35-542.71 m² sec^-1. The turbidity values of studied sections ranged from 11.20-14.25 NTU. The results of statistical analysis showed positive correlation (r=0.813) between the water discharge and the rate of suspense sediments concentration, and a positive correlation (r=0.976) was found between the water discharge and the suspended sediment load, and a positive correlation (r=0.898) was found between water discharge and turbidity. The results showed positive correlation (r=0.748) between the average concentration of suspended sediments and turbidity and positive correlation (r=0.891) between load of suspended sediments and turbidity.