The article ‘‘Gradually varied flow computation in channel networks by adaptive algorithm’’ (DOI 10.1007/s12046- 017-0640-x) which has been published online has been retracted by Chief Editor of the journal Sadhana as per the Committee on Publication Ethics (COPE) guidelines on redundant publication. The retraction is due to submitting the paper to the journal Sadhana without the consent or knowledge of one of the authors (S Murty Bhallamudi) and also after thorough investigation it has been found that the content is partially plagiarized from the article previously published: DOI: 10.1061/(ASCE)0733-9437(2004)130: 5(424), titled ‘‘Gradually varied flow computation in cyclic looped channel networks’’ by H Prashanth Reddy and S Murty Bhallamudi, Journal of Irrigation and Drainage Engineering, (copyright) ASCE, September/October 2004, pp. 424–431.