Temporal And Spatial Changes of Some Indicators of The Water Quality of The Tigris Within Nineveh Governorate/ Iraq
Keywords:Tigris, Water Quality, Mosul Dam Lake, Plant Nutrients.
Three sites along the Tigris, stretching from the Mosul Dam Lake to the Qayyarah neighborhood, were chosen to collect water samples in order to determine the Tigris' water quality. The research lasted six months (September 2020-February 2021). Physical and chemical parameters exhibited local and temporal alterations, but they were consistent with all previous studies findings, that the Tigris water is alkaline, with the exception of a value of (171) NTU reported in November, when the turbidity ranged between (0.54) and (9.6), putting it in the category of excellent water in terms of suspended matter. The total dissolved solids findings revealed an increase in value as moving south. The water of the Tigris River, on the other hand, is classified as extremely hard, with total hardness ratings higher than those reported prior to the dam's construction in the early 1980s. In terms of plant nutrients, the current study found that sulfate, nitrate, and orthophosphate levels fluctuated due to pressure from a variety of domestic, agricultural, and industrial sources, as well as seasonal variations.