In Tehsil Purwa there are many lakes, situated in a well-defined belt stretching along the whole length of the tehsil. The main among them are the lakes at Kantha, Bhadain, Unchagaon, Qila, Akhori, Miri, Zorawarganj and Sarwan. The Barhna tank near Sagauli, the Mohan and Sukrar lakes near Mauranwan, and several others, like the Bharda lake, skirting district Rae Bareli. Besides these, there are the tanks at Sahrawan, the Bhundi tank at Gulariha, and the Kumbha tank at Bhagwantnagar. The lakes at Kantha, Sagauli, and Barela contain water all the year round, while the others generally provide irrigation for the Rabi crops only, drying up in the years of drought. These lakes and tanks abound in fish, and singhara (water chestnut) is very extensively grown in them.