The Jadh Ganga flows crystal-clear from the glaciers of the Tibet border region through the ancient Nelong Valley — home of the Jadh Bhutia people. It meets the Bhagirathi at the dramatic Bhairon Ghati confluence, forming the turquoise heart of the Harshil region.
The Jadh Ganga — also called the Jahnavi or Jahnvi locally — is one of the most pristine and least-visited rivers in Uttarakhand. Rising from glaciers in the high Himalayan range near the Tibet border (the Nelang Valley area, 3,500–4,000m), it flows roughly 90 kilometres southward before merging into the Bhagirathi river at the famous Bhairon Ghati confluence, about 5 km before Harshil.
What makes the Jadh Ganga extraordinary is its purity and colour. Fed entirely by high-altitude glacial melt and snowmelt, the river carries almost no silt during pre-monsoon months — it runs a striking turquoise-blue that seems almost unreal against the brown granite gorge walls. In summer, it is cold enough to be painful to wade in even briefly (5–8°C). During monsoon, it turns milky white as snowmelt peaks.
The Jadh Ganga valley is home to the Jadh Bhutia community — people of Tibetan origin who traditionally migrated seasonally between the lower Harshil valley in winter and their upper valley summer settlements. The Nelong Valley, through which the upper Jadh Ganga flows, was a restricted border zone for decades and is only recently opening to tourists with special permits.
The Nelong Valley trek follows the upper Jadh Ganga through one of the most dramatic and remote valleys in Uttarakhand. The valley was closed to civilians for decades due to its proximity to the Tibet border — it was reopened to Indian tourists in 2015 (foreign nationals still require special permits).
Indian tourists require a permit from the District Magistrate office in Uttarkashi to enter the Nelong Valley. Tour Venture India can assist in arranging permits for our Harshil Valley package guests. Permits are generally issued for day visits or overnight camping within the valley.
The river runs crystal blue-turquoise with post-snowmelt flow. Cold and dramatic. Best for photography of the confluence and for Nelong Valley trek entry.
River turns white and powerful with heavy glacial melt. The Bhairon Ghati confluence is impressive but access to the riverbank is restricted. Nelong Valley trek not advisable due to landslide risk.
Post-monsoon the river clears again to turquoise. Excellent photography weather. Apple harvest season in Harshil. Clear mountain views from high points above the valley.
Road and valley closed due to snowfall. The Jadh Ganga freezes at higher altitudes. Access to Harshil and Bhairon Ghati is not possible.
Drive to Bhairon Ghati, 5 km before Harshil on NH108. The confluence of Jadh Ganga and Bhagirathi is visible from the highway bridge. From Uttarkashi: 65 km, 2.5 hours.
From Harshil village, a trail follows the Jadh Ganga upstream for 3–4 km through the Nelong Valley entry. The walk passes through deodar forest with river views. No permit needed for the first 3 km.
Apply for the DM Uttarkashi permit in advance — allow 2–3 days for processing. Tour Venture India assists with permit arrangements for our package guests. Trek starts from Gangotri or Harshil.