Pirai River (India)
The Pirai River flows through Kheri and Sitapur districts of Uttar Pradesh stare in India. It rises in depressions near Khamaria village near Kasta town and flows south-east to form boundary between Sitpur and Kheri district. After crossing the north-eastern border of pargana Maholi, it has a very winding course. It then flows through the pargana of Sitapur to join the Sarayan on its right, a short distance below Sitapur city. It is the only tributary of Sarayan river.