The Song River is a major river in Dehradun district draining the central and eastern part of the Doon Valley, in the state of Uttarakhand, India. It is a tributary of Sooswa river, which in turn is a tributary of the Ganges. It originates as spring-fed stream in the southern slopes of the Mussoorie ridge of the Himalayan range and runs from Dhanaulti towards Narendranagar. Song is one of the largest rivers that drain the Doon Valley, and its tributaries includes, Kali Gad, Shahastradhara, Assan River and Rispana River
The proposed site is located at the boundary of district Dehradun and Tehri Garhwal near village Sondhana at a distance of about 25 kilometers from Dehradun Railway Station. The coordinates of the dam site is as follows.

Dehradun City is located at a distance of around 236 km from national capital of New Delhi and can be easily accessed from major cities of India via all means ofrailways, airways as well as roadways. The proposed site is located at the boundary of district Dehradun and Tehri Garhwal near village Sondhana at a distance of about 25 kilometers from Dehradun Railway Station.
Jolly Grant Airport is the nearest Airport to Dehradun situated at a distance of 29kms. Taxis are easily available from Jolly Grant Airport to dehradun. Jolly Grant Airport is well connected to Delhi with daily flights. dehradun is well connected by motorable roads with Jolly Grant Airport.
Dehradun is well connected by motorable roads with major destinations of Uttarakhand and northern states of India. Luxury and normal Buses to dehradun are easily available from Delhi ISBT Kashmiri Gate and Meerut, Buses and Taxis to Dehradun are available from major destinations of Uttarakhand like Dehradun, Haridwar, Srinagar, Tehri, Uttarkashi etc. Dehradun is situated on National Highway 307 which connects you to all the chardham and other location in Uttarakhand.
Dehradun is well connected by railway networks with major destinations of India. Trains to Dehradun Railway station are frequent. Taxis and buses are easily available from Near ISBT Dehradun, There is only one railway station in Dehradun and the proximity of the station to the city makes train journey preferable mode of transport to the city dwellers and tourists. It hosts multiple inter-city express trains connecting to Mumbai, Delhi, Chennai, Indore, Allahabad, Kolkata, Ujjain, Varanasi, and Amritsar and many other place in India..