Water Quality Index Assessment using GIS Case study: Tigris River in Baghdad City. International Journal of Current Engineering and Technology, [S. l.], v. 5, n. 4, p. 2515–2520, 2015. DOI: 10.14741/. Disponível em: https://ijcet.evegenis.org/index.php/ijcet/article/view/2719. Acesso em: 6 apr. 2026.