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Abstract
Montgomery County Sanitary Engineering Department Evaluates Different Methods of Data Conversion to Create Water and Sewer Geodatabase Networks
Track: Water Distribution, Wastewater, and Stormwater
Author(s): Judy Holtvogt, Scott Cattran
The Montgomery County Sanitation Engineering Department (MCSED) recently completed an Implementation Master Plan, which included recommendations to build geodatabases for its water and sewer networks. MCSED conducted a pilot project to evaluate the following four methods of data development:
1. Converted existing AutoCAD water and sewer information (NAD27) into ArcGIS geodatabases (NAD83), rectified them using road edge and right-of-way information, and plotted them against orthophotos.
2. Used the results of the previous step, physically moved the aboveground water and sewer features (manholes, valves, hydrants, etc.) so that they matched up with those shown visibly from the orthophotos.
3. Created new water and sewer geodatabases using dimensions of as-builts.
4. Used real-time differential (RTD) GPS to collect water and sewer point data and built pipe network connectivity, while in the field using a custom utility collection software package.
Judy Holtvogt
Montgomery County Sanitation Engineering Department
4221 Lamme Road
Dayton , OH 45439
USA
Phone: 937.496.7988
Fax: 937.297.0952
E-mail: holtvogtj@montcnty.org
Scott Cattran
Woolpert LLP
GIS/IT
409 E. Monument Ave
Dayton 45402
USA
Phone: 937.461.5660
Fax: 937.461.0743
E-mail: scott.cattran@woolpert.com