. "Dez"@en . "The Dez River (Persian: \u062F\u0632\u200E\u200E), the ancient Coprates (Greek: \u039A\u03BF\u03C0\u03C1\u03AC\u03C4\u03B7\u03C2 or \u039A\u03BF\u03C0\u03C1\u03AC\u03C4\u03B1\u03C2), is a tributary of the Karun River and is 400 km long. It is the site of the Dez Dam.It is believed that a fortress protected a strategic bridge across the river at Andimeshk, whence the name, although no trace of this castle remains."@en . .