The results of the model can be applied to floodplain management and flood insurance studies. The system is capable of performing steady flow water surface profile calculations and includes unsteady flow, sediment transport, and several hydraulic design calculations. Hydrologic Engineering Centers–-River Analysis System (HEC-RAS) is an integrated package of hydraulic analysis programs, in which the user interacts with the system through the use of a graphical user interface (GUI). Hydrologic Engineering Centers–-River Analysis System as a one-dimensional model 1 One has to understand all these parameters and make sure that all are in the correct range. Numerical models are based on mathematics and have to deal with many physical parameters. As the river zoning maps give valuable information, such as the depth and area of flood prevention in flood zones, it is crucial to provide the maps in the first place. The river zoning maps are certainly one of the most basic and important information needed in civil engineering projects and should be taken into consideration before any investment or operational development in the projects. To optimize the surrounding lands, the most essential tool is to prevent the risks of flood in rivers and determine their boundaries. The nonstructural flood management approach includes eliminating the destructive effects of flood without constructing physical structures. Structural flood management application involves damming, trenches, the diversion of river flooding, and other physical flood mitigation structure constructions. Management measures to reduce flood damage can be done in two parts: structural and nonstructural measures. Floodplain management and the use of science and knowledge can reduce flood damages. However, different methods of flood mitigation have been applied. This journal is a member of the Committee on Publication Ethics (COPE).įlood has always been considered as one of the natural catastrophes that accompanies with huge losses and damages, which affect the lives of human beings. Prior to publication all authors have given signed confirmation of agreement to article publication and compliance with all applicable ethical and legal requirements, including the accuracy of author and contributor information, disclosure of competing interests and funding sources, compliance with ethical requirements relating to human and animal study participants, and compliance with any copyright requirements of third parties. Upon submission manuscript was subject to anti-plagiarism scanning. All editorial decisions made by independent academic editor. Reviewers’ reports totaled 839 words, excluding any confidential comments to the academic editor.FUNDING: Authors disclose no external funding sources.COMPETING INTERESTS: Authors disclose no potential conflicts of interest.Paper subject to independent expert single-blind peer review. ACADEMIC EDITOR: Carlos Alberto Martinez-Huitle, Editor in ChiefPEER REVIEW: Four peer reviewers contributed to the peer review report.