Application of the Operator Model for Determination of Maximum Modulus of Spring and Rain Floods at the Rivers within Vistula River Basin inside Ukraine

Abstract

The standard statistical characteristics of the time series of the maximum runoff of spring and rain floods are determined, they were used in further calculations to determine the maximum water runoff and runoff layers with a rare probability of exceeding. The paper substantiates and generalizes on the territory all parameters of the basic operator model of maximum runoff formation: coefficients of time non-uniformity of slope influx and duration of slope influx are determined, transformation function is calculated and maximum modules of slope influx for spring and rain floods are determined. Most of the calculated parameters are generalized by territory using GIS or calculation equations with the minimum amount of required input data.

As a result of the study, a regional methodology was developed to determine the maximum runoff of spring and rain floods on the rivers of the Vistula River basin. In contrast to previous developments by domestic authors, the advantage is that the use of the operator model allows the use of a single formula, regardless of the genesis of the maximum runoff and catchment area. The obtained results of the research can be used in the planning of hydraulic engineering construction