INFLUENCE OF URBANIZATION ON SYSTEMS OF DRAINAGE AND RUNOFF WATER CLEANING (ON THE EXAMPLE OF SAMARA)

Abstract

In the article the history of development of runoff water system in Samara is viewed and the main results of realization of general plan of runoff water system are described. Imprevious surfaces in Samara have been changed after runoff water system design, so the calculations of drainage system of runoff water under diff erent fl ow coeffi cients depending on kind of imprevious surfaces and lawns are made. Infl uence of increasing number of imprevious surfaces in city on augmentation of runoff water discharge is shown. As a result the drainage system works in forced, rapidly wearing mode, theres city streets fl ooding, and the cleaning structures arent keeping up. Therefore its necessary to meet requirements of proportion of diff erent green areas in city (as much as 40 %) and in residential area (as much as 25 %).