Open AccessLocation of the Outlet of the West Part of Al Hammar Marsh
Author(s) -
Jamal S. Makki,
Riyadh Z. Al Zubaidy
Publication year - 2020
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/737/1/012164
Subject(s) - marsh , hydrology (agriculture) , environmental science , outfall , water quality , brackish water , brackish marsh , salt marsh , wetland , environmental engineering , salinity , oceanography , geology , ecology , geotechnical engineering , biology
The brackish water of the Main Outfall Drain (MOD) is supplied to the west part of Al Hammar Marsh to overcome the shortage of water supply and prevent dryness of the marsh. However, salts started to accumulate in high concentrations in the marsh as the MOD water contains high salt concentrations. This study aims to find an optimal outlet location in the west part of Al Hammar Marsh to drain out the water of the marsh back to the (MOD). Hydrodynamic and water quality distribution mathematical models for the marsh were developed to specify the depths of water, flow velocity profiles, and the distribution of salt concentrations in the marsh. The obtained hydrodynamic properties and the quality of the water within the marsh area were used as indicators for selecting the optimal outlet location among five suggested locations at six operation conditions. Results showed that the water depth, velocity profiles, and concentration of the total dissolved solids (TDS) are affected by the location, discharge, the concentration of the TDS of the feeders, location of the outlet, the topographic characteristics at the upstream of outlet, and evapotranspiration. It is found that the third location of the outlet, located at E=699003 and N=3404760, gives the minimum deterioration in the concentration of the TDS, depending on the overall distribution of TDS concentrations.