Biology Department, College of Sciences, University of Baghdad, Baghdad, Iraq
This study investigated the effect Tharthar Canal on values of of Tigris River, North Baghdad City Iraq of the waters of the Tigris River; the measurements were conducted for 12 months, starting from January to December 2020, five sites were selected. Results showed that after the confluence of the Tharthar Canal with the Tigris River, a change happens in values of the Ecological Indices increased in the Tigris River after the junction with the Tharthar Canal. In contrast, the low values of Ecological Indices decreased in the Tigris River directly below the confluence area. Therefore, it concludes that the Tigris River Ecological Indices are affected by the Tharthar canal in the values of the river within the study area.