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Open AccessArticle

Flood Hazard Analysis of Proposed Regulator on Shatt Al-Arab River

1
Civil Engineering Department, Engineering College, Basrah University, Basrah 61004, Iraq
2
Water Resources Directorate in Basrah Province, Basrah 61001, Iraq
*
Author to whom correspondence should be addressed.
Hydrology 2019, 6(3), 80; https://doi.org/10.3390/hydrology6030080
Received: 1 July 2019 / Revised: 29 August 2019 / Accepted: 30 August 2019 / Published: 3 September 2019
Recently, the Shatt Al-Arab River has suffered from increased salinization of its water due to the reduction of freshwater from its tributaries, mainly from the Tigris River, which has resulted in long-distance salinity intrusion. Therefore, there is a need to establish a regulator in the Abu-Flus district to prevent salt intrusion. The aim of the study is to investigate the effect of a proposed regulator on the Shatt Al-Arab River with simulations using the Hydrologic Engineering Center’s River Analysis System (HEC-RAS) model. The upstream boundary conditions were the daily discharges of Tigris River and the downstream boundary conditions were the hourly water stages of the Shatt Al-Arab River. The river model was operated by using the daily discharges recorded in 2014 for calibration and verification of the model. Then, a program operated with a suggested regulator and a flood wave assumed a 200 m3/s peak flow for a duration of 27 days. The flooding occurrence period of the flood wave was investigated under the effect of three study cases of regulator gates, which were fully open (case B1), tide gate (case B2), and fully closed (case B3). The results showed that flooding inundation occurred only in two cases (B2 and B3). These results will encourage the construction of the regulator considering certain precautions. View Full-Text
Keywords: HEC-RAS; Shatt Al-Arab; numerical simulation river; 1D/2D; floodplain HEC-RAS; Shatt Al-Arab; numerical simulation river; 1D/2D; floodplain
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MDPI and ACS Style

Hamdan, A.N.A.; Abbas, A.A.; Najm, A.T. Flood Hazard Analysis of Proposed Regulator on Shatt Al-Arab River. Hydrology 2019, 6, 80.

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