The Tigris and the Euphrates have been Iraq's main water sources for thousands of years. Both rivers begin in Turkey, with the Tigris flowing directly into Iraq and the Euphrates winding through Syria first. The Euphrates is the longer river at 1,469 miles, while the Tigris runs 1,150 miles. Though the Tigris is shorter, it carries more water because it is fed by other waterways. #Quotes