بررسي تأثير متغيرهاي مورفومتري حوضه بر روي دبي حداكثر سيل در حوضه آبريز رودخانه چالوس با استفاده از روش هاي آماري و مدل هاي رياضي

The study of the effect of morph metric variables on maximum Debi of flood in Chalus drainage basin using statistical methods and mathematical models

This study tries to calculate the probability of flooding with definite frequency in Chalus drainage basin .Then the correlations between flood Debi and morph metric variables of the said basin will be calculated on the basis of selection of an appropriate statistical distribution for the calculation and prediction of in terms of mathematical models. Based on these studies, Pearson logarithmic distribution function type 3 was found to be the most appropriate statistical distribution function of the region for the statistical data of the basin stations and the calculation of maximum flood in Chalus drainage basin. A statistical significant differences were found between different morph metric parameters of the basin such as area of sub-basin , length of drains , density of drains , slope of sub-basin and frequency of drains on the one hand ,and maximum Debi of flood in the basin in terms of linear and non-linear models ,on the other . These can play a significant role in the calculation and prediction of flood in each sub-basin of Chalus basin.