Effect of type of statistical distribution on quality of authenticity of curves of material well-being

It is very interesting to estimate the calculation of hydrological characteristics by non-ordinary values for the practice of hydraulic engineering. The influence of the values of the distribution function to ensure the reliability of the quality of curves was determined by the point value of the annual costs of river flow. It is proved that the normalization of the initial data provides a simpler way of assessing the security and it is sufficient to first search for a suitable normalization by minimizing the sum of the squared deviations of the security estimates from the practically obtained values of the series.