|
Track: Water Distribution, Wastewater, Sewer
Paul Klimas
Woolpert
409 E Monument Avenue
Dayton, OH 45402-1261
Telephone: 937- 461-5660
Fax: 937-461-0743
E-mail: paul.klimas@woolpert.com
Field-Based GIS/GPS Works For Water and Sewer Conversion and Applications
The Miami-Dade Water and Sewer Department (MDWASD) is charged with the operation and maintenance of 3,200 miles of sewer lines and 4,000 miles of water mains covering 414 square miles and serving 375,000 customers. In the past MDWASD has maintained these systems using 1"=300' scale paper map sheets. But the Department has found it increasingly necessary to have access to this data in a digital form. Real-time kinematic, pen-based GPS solutions are finally here and working for MDWASD. This system has been used to capture and attribute all above ground network features with an accuracy of plus/minus 3.5 cm. The GPS crews are using a scanned image of the 1"=300' scale paper maps, georeferenced to a planimetric base-map. These images are used on the pen-based system to aid in identifying and locating the structures and attributes and generating connectivity. After the field inventory work is completed, the data is exported to supporting CAD and GIS platforms. The network data is then created using the
above ground GPS features to determine where the underground fittings exist. During this process all network connectivity data is captured from the GPS features for use in modeling activities. Modeling is supported through the use of CAD and detached database storage technologies, which are integrated into Esri definitions and quality assured. Throughout this project many challenges are being faced and overcome. These include developing techniques to support acquired centimeter accuracy features, building orthogonal GIS data connectivity, and managing GIS structures across Esri ArcInfo and ArcView platforms. All of these must be accomplished while maintaining and reproducing network structures from accuracies of physically located structures. This project is the first phase of a multiphase utility infrastructure management and system integration that provides the basis for facility modeling, work order processing, planning, and mapping.
|
|
