English: Map of the canals (nahrs) along the medieval course of the Tigris below Wasit in southern Iraq, in around 900 AD. The canals are as follows:

1. Nahr (A)ban 2. Nahr Quraysh 3. Nahr al-Sib 4. Nahr Barduda

Background map is from Le Strange, Lands, Map II. The information on the canals comes from Le Strange, Ibn Serapion, pp. 271, 273-274.

References:

• Le Strange, Guy. "Description of Mesopotamia and Baghdad, written about the year 900 A.D. by Ibn Serapion." The Journal of the Royal Asiatic Society of Great Britain and Ireland for 1895. London: Royal Asiatic Society, 1895.
• Le Strange, Guy. The Lands of the Eastern Caliphate: Mesopotamia, Persia, and Central Asia, from the Moslem conquest to the time of Timur. Cambridge: Cambridge University Press, 1905.