Dicle is a municipality and district of Diyarbakır Province, Turkey. Its area is 738 km, and its population is 36,114. It is populated by Zazas. The …Dicle is a municipality and district of Diyarbakır Province, Turkey. Its area is 738 km, and its population is 36,114. It is populated by Zazas. The mayor is Felat Aygören from the HDP. Dicle is the Zaza Language and Turkish name of the Tigris river, which runs through the district and gave its name to it. The name derives from tighri- from Avestan and cognate with "tîj, tîr" in Zaza Language and tigra- in Old Persian. Some claim that it derives from through Akkadian Idiqlat from the original Sumerian name for the river, Idigna.