Abstract
Shatt Al-Hilla branches from the left of Euphrates River, U/S Hindiyah Barrage, Iraq, and extends about 100 km. It branches at the end into Shatt Al-Diwaniya 112 km and Shatt Al-Daghara 64 km. The study aims to evaluate and develop (Hilla-Daghara) rivers system, which is included Shatt Al-Hilla and Shatt Al-Daghara. Fieldwork began from (26 October until December) 2020. M9, S5 devices, and the installed staff gauges were used to measure discharges and water levels, respectively. A one-dimensional model was developed for the study area by HEC-RAS, after calibration and verification by field measurements; the Manning's n of Shatt Al-Daghara is found to be 0.022. Five Scenarios were simulated to study the reach under the current conditions. It was found that the discharge capacity in Shatt Al-Hilla and Shatt Al-Daghara is 200 m3/s and 50 m3/s, respectively. Four scenarios were conducted for the development to improve the capacity of Shatt Al-Hilla to 303 m3/s and Shatt Al-Daghara to 75 m3/s. Earthworks volume of development Shatt Al-Hilla and Shatt Al-Daghara are about (5.89 and 0.54) Mm³, and its cost is (11.780 and 1.080) billion IQD respectively. Results of applied development show that Shatt Al-Daghara tail can pass discharge more than five m3/s when Shatt Al-Daghara tail cross regulator that causes choking in the last reach of Shatt Al-Daghara is removed.
Highlights
Water Resources Management is the process that helps people to work on managing the available water resources in the present and the future, reduces the risks of floods; it helps to supply the required water at the right time and in the right place (Cosgrove and Loucks, 2015)
Euphrates River originates from the Eastern Mountains of Turkey and passes through the Syrian province; it enters Iraq at the city of Al-Qaim in Al-Anbar Governorate
The river passes through several governorates until the new Hindiyah barrage close to the town of Hindiyah, which was established for controlling the water levels of the Euphrates River and divert the flow into Hilla main Canal (Shatt Al-Hilla), Kifil main canal, Beni Hassan main Canal, and Hussayiniah main canal, to generate hydropower, and facilitate the Navigation into Euphrates River
Summary
Water Resources Management is the process that helps people to work on managing the available water resources in the present and the future, reduces the risks of floods; it helps to supply the required water at the right time and in the right place (Cosgrove and Loucks, 2015). (Agnihotri and Patel, 2011), studied the Tapi River, Surat, India, by using HEC-RAS software. The river cross-section development was proposed to improve the river's carrying capacity and reduce the risk of flooding. (Issac, et al, 2019) used a hydraulic model of the Gurupura River in India that was selected by Issac to conduct a steady flow analysis used the HEC-RAS software to analyze the river flood and develop a flood inundation map of the river section. (Shayea and Al Thamiry, 2020) developed a one-dimensional hydraulic model of Euphrates River within Nasiriyah city, Iraq by the HEC-RAS software to simulate the discharge under the current conditions. This study is conducted to evaluate the hydraulic condition and the necessary improvement that will modify the capacity of the Shatt Al-Hilla and Shatt Al-Daghara
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