Abstract:
Before building the storm sewer networks the analysis of precipitation is very important.
The issues of assessing the reliability of the information on the annual amounts of precipitation in the
meteorological monitoring system of the KazHydroMet State Hydrometeorological Service of Kazakhstan
are considered. An assessment is made of the homogeneity of the spatial correlation function, as the basis of
the cartographic modeling of the statistical parameters of annual precipitation amounts. A special study
aimed at studying the processes of cyclical fluctuations in the temporal variability of annual and summer
precipitation amounts for stations representing all regions of the country. The data of daily precipitation of
Kazakhstan in the period 1936-2017 were processed. When processing data, an open-source computer
program R was used. The results will be useful for designers and researchers. A statistically significant
increase in the maximum daily precipitation of 2–4 mm per 10 years was recorded at the Arkalyk, Aksay,
Atyrau, Ushtobe, Bektauat and Karabalyk meteorological stations. At some stations in the Akmola and
Pavlodar regions, as well as in the south and southeast of the republic, a statistically significant reduction of
2-6 days per 10 years was observed for the maximum duration of the period without precipitation.
