<?xml version="1.0" encoding="UTF-8"?> <article key="pdf/10003137" mdate="2015-11-02 00:00:00"> <author>Rajeev R. Sahay</author> <title>Predicting Residence Time of Pollutants in Transient Storage Zones of Rivers by Genetic Programming</title> <pages>173 - 177</pages> <year>2015</year> <volume>9</volume> <number>2</number> <journal>International Journal of Environmental and Ecological Engineering</journal> <ee>https://publications.waset.org/pdf/10003137</ee> <url>https://publications.waset.org/vol/98</url> <publisher>World Academy of Science, Engineering and Technology</publisher> <abstract>Rivers have transient storage or dead zones where injected pollutants or solutes are entrapped for considerable period of time, known as residence time, before being released into the main flowing zones of rivers. In this study, a new empirical expression for residence time, implementing genetic programming on published dispersion data, has been derived. The proposed expression uses few hydraulic and geometric characteristics of rivers which are normally known to the authorities. When compared with some reported expressions, based on various statistical indices, it can be concluded that the proposed expression predicts the residence time of pollutants in natural rivers more accurately.</abstract> <index>Open Science Index 98, 2015</index> </article>