Identifying weak points of urban drainage systems by means of
VulNetUD
M. Möderl*, M. Kleidorfer*, R. Sitzenfrei * and W. Rauch*
* Unit of Environmental Engineering, University of Innsbruck, Technikerstr.
13, 6020 Innsbruck, Austria
Abstract
This article presents the development and application of the software tool
VulNetUD. VulNetUD is a tool for GIS-based identification of vulnerable
sites of urban drainage systems (UDS) using hydrodynamic simulations
undertaken using EPA SWMM. The benefit of the tool is the output of
different vulnerability maps rating sewer surcharging, sewer flooding,
combined sewer overflow (CSO) efficiency and CSO emissions. For this, seven
predefined performance indicators are used to evaluate urban drainage
systems under abnormal, critical and future conditions. The application on a
case study highlights the capability of the tool to identify weak points of
the urban drainage systems. Thereby it is possible to identify urban
drainage system components which cause the highest performance decrease
across the entire system. The application of the method on a real world case
study shows for instance that a reduction of catchment areas which are
located upstream of CSOs with relatively less capacity in the downstream
sewers achieves the highest increases efficiency of the system. Finally, the
application of VulNetUD is seen as a valuable tool for managers and
operators of waste water utilities to improve the efficiency of their
systems. Additionally vulnerability maps generated by VulNetUD support risk
management e.g. decision making in urban development planning or the
development of rehabilitation strategies.
Keywords: Decision support tool, GIS, hydrodynamic simulation,
vulnerability, urban drainage systems
Name of software: | VuNetWS (Vulnerability of Urban Drainage
Networks) |
Contact address: | Michael Möderl, Wolfgang Rauch
Unit of Environmental Engineering
University of Innsbruck
Technikerstr. 13, 6020 Innsbruck, Austria
|
Tel: | +43 (512)507-6918 |
Fax: | +43 (512)507-2911 |
Year first available: | 2008 |
Software required: | MCRInstaller.exe, version 7.7 or Matlab (R2007b) Version
7.5.0.342 |
Program language: | Matlab |
Program size: | ~ 1 MB |
Download program (Version 1)
(Note: The
MCRInstaller, version 7.7 is free available on request for
VulNetUD users.)