The Tawi River is the tributary of the Chenab. The Railway of India has most appropriately chosen the name Jammu Tawi as the name of Jammu City's railway station. The city of Jammu is situated on the right bank of the river Tawi.
A Tawi can be defined as a stream which flows throughout the year, with fluctuating water levels during the various seasons.
The Tawi originates mainly at Kalplas Kund of Seoj Dhar in the Bhadarwah region of Doda district, from where it descends to Sudh Mahadeva. It then turns northwest towards Chennani for about 42 kms. In this part the river foams along the large boulders confined by rocks and produces a musical sound. The thrashing of gushing water produces milky foams and gets dissolved after traveling few meters. The river has produced deposits of Alluvium and round blocks of gneiss (volcanic rock) embedded in the earth. From Chenani it turns southwestward for a distance of 21 kms where it emerges in an open area through which it flows to the south for 16 kms. Here it heads towards Jinganu where it once again tumbles through a hilly range to reach Jandrah. The river then passes through another range of hills to enter Nagrota arriving at Jammu. Once the River Tawi was famous for Trout fish. Out of the hills of Jammu it heads on to merge in the river Chenab and then enters Pakistan.