Tarnak River

The Tarnak River is a river of Ghazni, Zabul and Kandahar provinces of Afghanistan. It rises in Hazarajat, near 33°7′N 67°56′E, south of the Lomar Pass. It flows towards the south-west for some 350 km before it joins the Dori River some 30 km downstream of the Dori-Arghastan confluence, and some 30 km upstream of the Dori-Arghandab confluence, at 31°24′N 65°33′E. The combined waters of these rivers join the Helmand at 31°27′N 64°23′E, near Lashkargah.