The length of the Shatt al - Arab is given by various sources as 145 -- 195 kilometres ( 90 -- 121 mi ) .
The Shatt al - Arab connects the Euphrates and the Tigris with the Persian Gulf .
The length of the Shatt al - Arab , which connects the Euphrates and the Tigris with the Persian Gulf , is given by various sources as 145 -- 195 kilometres ( 90 -- 121 mi ) .