Question

where is Ganga and Yamuna are situated and where are there delta ​

Answer 1

ANSWER

One such Triveni Sangam, in Prayag(Allahabad) has two physical rivers-- Ganga & Yamuna and the invisible Saraswati river. The site is in Prayag, India.

And their world largest delta in Bay of Bengal, name as Sundarban Delta.

Hope it helps ☺️