Explanation:

 It enters Himachal Pradesh at Khadar Majri in Sirmaur district. Yamuna river is the largest tributary of the Ganga. The Yamuna river has mythical relation to the Sun. It rises from Yamunotri in Gharwal hills and forms the Eastern boundary with Unttar Pradesh. The Yamuna is the Eastern-most river of Himachal Pradesh. Its famous tributaries are Tons, Pabbar and Giri or Giri Ganga. The Giri Ganga rises from near Kupar peak just above Jubbal town in Shimla district, Tons from Yamunotri and Pabbar from Chandra Nahan Lake near the Chansal peak in Rohru tehsil of Shimla district. Its total catchment area in Himachal Pradesh is 2,320 km. It leaves the state near Tajewala and enters into the Haryana state.