162 Copyright © 2020, IGI Global. Copying or distributing in print or electronic forms without written permission of IGI Global is prohibited. Chapter 8 DOI: 10.4018/978-1-5225-9771-1.ch008 ABSTRACT The Innaoune Watershed represents an important hydric potential of the oriental part of Morocco. However, the basin exhibits a set of hydrologic drawbacks, such as foods, erosion, and pollution. This chapter is focused on food forecast study. In order to help managers and decision makers to adopt the appropriate land management strategies for protecting the population from food damages, the study of the hydrological behavior and quantifcation of water yield are paramount. According to this perspective, the main goal of this chapter is to test the ability of the SWAT model to simulate and reproduce the hydrological behavior of the upstream of Innaouene Watershed. The output of the model could be used to map, delineate, and forecast the foods expansion for a particular rainfall event. SWAT was performed on a daily time step from 2004 to 2012 for calibration and 2012 to 2014 for validation. The model accuracy was evaluated by measuring the Nash- Sutclife coefcient and R 2 . Hydrologic Modeling Using SWAT: Test the Capacity of SWAT Model to Simulate the Hydrological Behavior of Watershed in Semi-Arid Climate Zineb Moumen University of Sidi Mohamed Ben Abdellah of Fez, Morocco Soumaya Nabih University of Sidi Mohamed Ben Abdellah of Fez, Morocco Ismail Elhassnaoui University Mohammed V, Morocco Abderrahim Lahrach University of Sidi Mohammed Ben Abdellah of Fez, Morocco