GIS applications in urban drainage master planning - Case Study
The City of Stratford, Ontario, located 150 km (94 mi.) west of Toronto, initiated the development of an infrastructure asset database in the early 1990’s and continues to develop digital mapping to support the maintenance and management of municipal services. In continuing these efforts, the City initiated the City-Wide Storm System Master Plan (the Study) in 2002 to evaluate the impact of current and future development on the existing storm drainage system. The Study Area, illustrated on Figure 1, encompasses 27 sq.km (11 sq.mi) of land within the City’s boundaries, as well as external lands that drain into the City’s drainage systems. Given Provincial regulatory requirements for Environmental Assessment, public and agency consultation was a key Study activity, requiring the presentation of findings and recommendations at Open House’s and City Council meetings throughout the study. An aggressive schedule was imposed in light of recent basement flooding that had heightened the need to identify any possible system improvements and assuage public concerns.
The Case Study describe how GIS was used throughout the Study including data collection, management, and analysis activities conducted as part of the minor drainage system model development, surface analysis conducted as part of the major drainage system assessment, and the presentation of both data and analysis to communicate Study findings.