The analysis of the drought risk of the Chichaoua watershed allows to characterize the climatic regime by means of statistical analysis methods in order to reach a good understanding of the dynamics of this basin in the mountainous region of Morocco. This study also makes it possible to analyze the dynamics and the space-time evolution of the temperatures within this catchment area which is characterized by the semi-arid climate and to highlight the sensitivity of the flow of the wadis to the climatic and physiographical variations of this catchment area.
Therefore, the objective of the present study is to make a study on the drought risk based on the calculation of an indicator from biophysical parameters extracted from NOAA/AVHRR satellite data covering the Chichaoua watershed region. The drought alert requires the use of macro-geographic data elaborated on a regional scale on an annual basis (April-May of each year). The analysis of these data allows calculating indicators of conjunctural vulnerability, among them we quote the temperature condition index (TCI) which is used for the characterization and analysis of temperature dynamics and drought monitoring at the level of Chichaoua watershed.