Journal of Environmental Protection, 2019, 10, 1612-1648 https://www.scirp.org/journal/jep ISSN Online: 2152-2219 ISSN Print: 2152-2197 DOI: 10.4236/jep.2019.1012097 Dec. 20, 2019 1612 Journal of Environmental Protection Water Quality Model for Streams: A Review S. Ranjith 1 , Anand V. Shivapur 2 , P. Shiva Keshava Kumar 3 , Chandrashekarayya G. Hiremath 4 , Santhosh Dhungana 5 1 VTU-PG Studies, Belagavi, India 2 Department of Civil Engineering, VTU-PG Studies, Belagavi, India 3 Department of Civil Engineering, PDIT Engineering College, Hosapete, India 4 Department of Water and Land Management, VTU, Belagavi, India 5 School of Environment, Resources and Development (SERD), Pathumthani, Thailand Abstract Six main public domain water quality models which are presently available for Rivers and streams are being captured in this article. These main models could produce important results if they are used in the correct manner, be- cause they are different in terms of assumptions, strength and weaknesses, processes they represent, modeling capability and data input requirements. The Model review discussed includes, water quality analysis simulation pro- gram (WASP7), simulation catchment (SIMCAT), quality simulation along Rivers (QUASAR), and the temporal overall model for catchment (TOMCAT), QUAL2KW, QUAL2EU. The models are described individually according to a consistent set of criteria-conceptualization, model capability, model strengths, limitations, input data and how it utilized. The outcome showed that TOMCAT and SIMCAT are important in ASSESSING effect of point sources in a very simple way. The QUAL2KW, unlike the QUAL2EU where macrophytes play a major interaction, it can convert algal death to carbonaceous Biochemical Oxygen Demand (CBOD), thereby making it more suitable. In addition to the extensive requirement of data, it is expensive and time consuming to set up these complex models such as QUASAR and WASP7. Therefore, one model cannot be used for all the required functional- ities. Choosing a model would depend on a specific application, financial cost and time availability. This article may be of help in choosing a suitable model for a specific water quality problem. Keywords Water Quality Models, Dissolved Oxygen, SIMCAT, TOMCAT, QUAL2Kw, QUAL2EU, WASP7 and QUASAR How to cite this paper: Ranjith, S., Shivapur, A.V., Kumar, P.S.K., Hiremath, C.G. and Dhungana, S. (2019) Water Quality Model for Streams: A Review. Journal of Environ- mental Protection, 10, 1612-1648. https://doi.org/10.4236/jep.2019.1012097 Received: August 7, 2019 Accepted: December 17, 2019 Published: December 20, 2019 Copyright © 2019 by author(s) and Scientific Research Publishing Inc. This work is licensed under the Creative Commons Attribution International License (CC BY 4.0). http://creativecommons.org/licenses/by/4.0/ Open Access