Evaluation of the severity of flooding in sub basin of Ivar watershed

摘要

In watershed management, determine the severity of flooding trends and comparisons made be done to determine the priorities and policies is of paramount importance. Including critical issues in hydrological studies, the topic of flood and flooding in the area and therefore need to examine the maximum instantaneous flow rate of the river regime. In this study, in order to classify the area in terms of flooding the amount rain and snow in April and March, vegetation, soil hydrological groups the area and slope area factors, was considered. Then the total value with a coefficient based on the importance and impact of the flood for each of the hydrologic units have been estimated And thus severity of flooding in each sub basins became quantify And weight was given to each factor And based on the final score, the severity of flooding in basin categorized in five classes: very low, low, medium, high and very high. I'8, I10, I'3 and I'9, I'4 Sub basins have highest and lowest intensity of flooding respectively.