Morphological Characteristics of Urban Sewer System

Abstract

Morphological characteristics of the urban sewer system at Higashinada District in Kobe City are investigated in terms of Horton's Law, Hack's Law, Melton's Law and Fractal dimension. Results of calculation for 25 main sewers show that the maximum order of the sewer system is 1-3 and the Fractal dimension is 1.00-1.33 (ave. 1.10). Horton's Law, Hack's Law and Melton's Law are almost proved with some exceptions. Modified Hack's Law using Fractal dimension gives higher correlation between main sewer length and drainage area compared with the original Hack's Law.