The City of St. Thomas strives to bring its citizens well-maintained roads, sewers, watermains and parks. 

To do this they must have information on all pieces of infrastructure from the size of a sewer pipe to the depth of a sewer manhole to the location of a park. The Infrastructure Management System delivers this type of information by combining data with Geographical Information System (GIS) technology.

By linking a graphical image on a map to data pertaining to an asset, complex maps can be created to give a clear picture of the condition of the city's streets, pipes and parks and thereby direct where tax dollars would best be spent.


This section of the Operations Division of Environmental Services is responsible for the department's Infrastructure Management System (IMS). The IMS is a computer-based tool for storing, manipulation and managing geographic information. It is an inventory of all assets managed by the Environmental Services Department.

The function of the IMS is to create information by integrating data layers to show the original data in different ways and from different perspectives. By implementing this system, staff are able to make better-informed decisions on where capital and operating budgets should be directed.

Currently the IMS houses data on the following infrastructure:

  • Roads including curb, gutter and sidewalks
  • Sanitary Sewers including manholes, sewers, outfalls and pumping stations
  • Storm Sewers including manholes, sewers, catchbasins, drainage areas and stormwater management ponds
  • Watermains including pipes, hydrants and valves
  • Parks including tree inventories, park maintenance and trails

By linking various data such as size, length and age to each entity, staff is able to paint a picture of the physical condition of our city's infrastructure.

Data for each entity is gathered from a number of sources including as-built engineering drawings, survey work, fieldwork and GPS.