Waterways
The main inland waterways are the Amu Darya River, which runs along the northern border, and the Garagum Canal, which runs from east to west from the Amu Darya near the Afghanistan border through Mary and Ashgabat to Turkmenbashi on the Caspian coast. The 1,400-kilometer canal, designed mainly for irrigation, is navigable for 450 kilometers from its Caspian terminus. Because water is withdrawn for irrigation, the Amu Darya is navigable only about 250 kilometers downstream from the Afghanistan border to Turkmenabat.
Read more about this topic: Transport In Turkmenistan