Khuram or Kurram River

Kurram River is located in Paktia and Khost provinces of Afghanistan and Kurram Agency, North Waziristan Agency and Khyber Pakhtunkhwa, Pakistan. It drains the southern flanks of the Spin Ghar mountain range and is a right bank tributary of the Indus River.

The Kurram River crosses the Afghan-Pakistan border about 80 km southwest of Jalalabad and in ancient times offered the most direct route from Kabul and Gardez to modern-day northwestern Pakistan. The route crossed the Peiwar Kotal Pass 3,439 m (11,283 ft) high, just over 20 km west of Parachinar, which is blocked by snow for several months of the year. The Kurram River joins the Indus River near Isa Khel after a course of more than 320 km (200 mi).

The Kurram River finds mention in the Rig Veda under the name of Krumu.

Source: Wikipedia