The development and of a Geographic Information Systems (GIS) for water, wastewater or storm drain systems present several unique challenges not typical to most municipal GIS conversion projects. First, the GIS database is typically based on engineering drawings created for use by experienced in house staff. This type map is not suitable for interpretation by GIS digitizing technicians.

The second issue involves the application of data after the conversion process. GIS data created is generally used both for mapping as well as engineering analysis including: hydraulic water pressure and distribution modeling and sewer time flow modeling. This type of analysis requires correct capture of connectivity and flow direction information. Minor errors such as a mistaken connection between two lines which in a typical GIS database would be inconsequential, would result in significant errors when the GIS database is used for example as the base for a pressure model.

Finally, the nature of a utility’s organization demands that data be up-to-date. While personnel involved in more traditional analysis can accept data which may be several months old, emergency services such as provided by most utilities require up-to-date information reflecting the latest changes in the field. This need creates the requirement for comprehensive maintenance procedures.

Digital Engineering Corporation (DEC) provides a comprehensive approach to GIS conversion which provides both detailed procedures and proven software designed to help organizations successfully manage and complete conversion of Water, Wastewater and Storm drain systems. DEC provides ARC/Info 8X based software tools for the conversion process, quality control, database reconciliation, cartographic production and workflow management. With over 25000 man-hours of Utility conversion experience, DEC can create procedures outlining detailed methodology for conversion and maintenance of the GIS data.  DEC's Services include the following benefits:

• Provides comprehensive system for GIS conversion of water and sewer maps.
• Supports transfer of technology to in house staff.
• Creates documented procedures to enable long term maintenance of the system.
• Insures the safety of existing maps by providing in house conversion option.
• All DEC software is based on ESRI’s ARC/Info for NT or UNIX operating systems.
• Enables rapid project startup by providing comprehensive management suite.
• Insures database integrity through systematic quality control and tracking software.
• Provides project flexibility through the use of in house or contracted resources.

Using a the above combination, DEC delivers long term success in development of GIS databases for water, wastewater and storm drain systems.

Screen Shot from the Water
and Sewer Conversion
System developed by DEC
for WSSC (Nation's 7th
Largest Water Utility)