Abstract
Al-Chibayish Marsh (CM) is considered as the major part of Central Marshes area of this marsh is 1050 Km². The water quality of these marshes is suffering from salt accumulation due to intensive dam construction, limited supply of water from sources, climate change impacts, and the absence of outlet flow from these marshes, specifically at low flow periods. So, the current research aims to assess and improve these marshes' hydraulic behavior and water quality and define the best location for outlet drains. Field measurements and laboratory tests were conducted for two periods (November 2020 and February 2021) to define the (TDS) concentrations at nine different locations. Samples were also examined for water's physical and chemical properties as pH, electrical conductivity, water temperature, dissolved oxygen, and turbidity. Simultaneously with the sampling process, the water depths were measured at 50 different locations within the marshes. Moreover, the observations of water quality parameters were analyzed for the previous ten years (2010-2020). Hydrodynamic and water quality simulations were conducted using (SMS-RMA2 and RMA4) software to specify the water depths and velocity variations and define the salt content distribution. The obtained results illustrated 4sediment and TDS and in the Central Marshes area in general and CM in specific. As well, numerical results showed that the use of these outlets would significantly improve water quality. The current outlets do not work, and they link the Euphrates River to the Chabayish Marsh.
Highlights
Four primary factors are important to indeterminate the water quality of southern marshes
The results showed that all stations' average total dissolved solids (TDS) were classified as the second category Mesotrophy (Farhood, 2016)
The Euphrates River flows from northern Iraq to its south in Lower Faris formation, which is composed of Calcite, gypsum, and dolomite rocks, leading to a rise in the salt concentration in the water as a consequence of the disintegration of these types of rocks
Summary
Four primary factors are important to indeterminate the water quality of southern marshes. The majority of previous research focused on physical and chemical factors, and they revealed that Al-Chibayish marshes' water quality had deteriorated. The results of water sampling from three sites in CM between December 2011 and February 2012. It showed that it is of poor quality and unsafe for human consumption. Examining the water quality features revealed that the marshes' qualities had deteriorated due to a shortage of water, resulting in high total dissolved salt levels (Al-Asadi, and AlHejuje, 2019)
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
