Tawa river, which is the tributary of River ________, is located on the Tawa reservoir

The correct answer is Narmada.

Key Points

• Tawa River is the tributary of the Narmada River.
• It is the longest tributary of the Narmada River.
• Its origin is in the Satpura range.
• It meets the Narmada at Hoshangabad district.
• Its length is 172 km.

Additional InformationNarmada

• The Narmada River originates from the Narmada Kund located in Amarkantak, Anuppur district in Madhya Pradesh.
• Amarkantak is located on Maikal Mountain. 
• The Narmada River forms the unmarked boundary between North and South India.
• The major tributaries of the Narmada are Barna, Tawa, Kanar, Kolar, Man, Hatni, Uri, Shakkar, etc.
• It flows westwards (1, 312 km) before falling into the Gulf of Khambhat.
• The Narmada River is the longest river in Madhya Pradesh and it's called "The Lifeline of Madhya Pradesh".
• The waterfalls created by the Narmada River include Kapil Dhara and Dudh Dhara Falls (Anuppur), Dhuandhar Falls (Bhedaghat, Jabalpur), Sahasradhara Falls (Maheshwar, Khargone), Dardhi Falls, Manadhata Falls, etc

.Tapti

• Its ancient name was Tapi.
• According to religious beliefs, It is also known as “Surya-Putri” i.e. Daughter of the Sun and Saturn’s Sister.
• It originates from the Multai of Betul district.
• It flows into the Arab Sea in the Gulf of Khambat (Gulf of Combay) near Surat of Gujrat.
• The total length of the Tapti River is 725 kilometers.
• Its total basin area is 65,145 square kilometers, out of which 51,504 square kilometers lie in Madhya Pradesh.

Krishna

• The Krishna River is an east-flowing river that originates in Mahabaleshwar, Maharashtra. 
• It flows from Maharashtra, Karnataka, Telangana, and Andhra Pradesh.
• The length of the river is around 1401 km long.
• It is the fourth largest river in India after Ganga, Godavari, and Brahmaputra.
• The left bank tributaries of Krishna are Bhima, Dindi, Paleru, and Musi.
• Whereas its right bank tributaries are Koyana, Panchganga, Dudhganga, Venna, Malprabha, Ghatprabha and Tungabhadra.