1,015 km; Shatt al Arab is usually navigable by maritime traffic for about 130 km; channel has been dredged to 3 m and is in use; Tigris and Euphrates Rivers have navigable sections for shallow-draft watercraft; Shatt al Basrah canal was navigable by shallow-draft craft before closing in 1991 because of the Gulf War.

 Army Canal (Qanat al-Jaish in Arabic) is a 25-kilometer waterway connecting the Tigris and Diyala rivers, forms the western boundary of Sadr City, and when completed, will once again supply irrigation water to nearby agricultural areas and clean drinking water to Rusafa, Baghdad.