Determining the calculated depth of rainfall while designing surface runoff treatment facilities

Summary

Summarized data on the maximum depth of rainfall disposed to the facilities for the purification of surface runoff from residential and industrial areas of the first and second groups are presented. The basic regularities of the rainfall distribution over the territory and their analysis are given. The possibility of using the three-parameter Kritsky-Menkel distribution to determine the depth of precipitation with a given period of a single excess is proved. The obtained dependences of the depth of rainfall on the location of the weather station can be used for a preliminary pre-project evaluation of the depth of rainfall subject to the disposal to the surface runoff treatment facilities. For enterprises of the first and second groups using the three-parameter Kritsky-Menkel distribution is possible while determining the depth of rainfall with a given period of a single excess of at least 0.14 years.

Key words

surface runoff , rainfall volume , precipitation depth , Kritsky-Menkel distribution