TAILIEUCHUNG - GIS Applications for Water, Wastewater, and Stormwater Systems - Part 2 (end)

To fully appreciate the benefits of GIS applications consider the following hypothetical scenario. On March 10, 2004, following a heavy storm event, a sewer customer calls the Sewer Authority of the City of Cleanwater to report minor basement flooding without any property damage. An Authority operator immediately starts the GIS and enters the customer address. GIS zooms to the resident property and shows all the sewers and manholes in the area. The operator queries the inspection data for a sewer segment adjacent to the customer property and finds that a mini movie of the closed-circuit television (CCTV) inspection dated July 10, 1998, is available | CHAPTER 8 Mapping GIS provides powerful and cost-effective tools for creating intelligent maps for water wastewater and stormwater systems. A sewer system map created by GIS Borough of Ramsey New Jersey . Copyright 2005 by Taylor Francis LEARNING OBJECTIVE The learning objective of this chapter is to understand how to create GIS maps for water wastewater and stormwater systems. MAJOR TOPICS Mapping basics Map types Advantages of GIS maps GIS mapping steps Mapping case studies LIST OF CHAPTER ACRONYMS AM FM Automated Mapping Facilities Management AML Arc Macro Language DRG Digital Raster Graphics USGS topographic maps NAD-27 North American Datum of 1927 NAD-83 North American Datum of 1983 QA QC Quality Assurance Quality Control SPC State Plane Coordinate Map Projection System TIGER Topologically Integrated Geographic Encoding and Referencing System . Census Bureau Mapping System UTM Universal Transverse Mercator Map Projection System VBA Visual Basic for Applications This book focuses on the four main applications of GIS which are mapping monitoring maintenance and modeling and are referred to as the 4M applications. In this chapter we will learn how to implement the first m mapping . LOS ANGELES COUNTY S SEWER MAPPING PROGRAM In the 1980s the Sanitation Districts of Los Angeles County California envisioned a computerized maintenance management system that would provide decision makers with essential information about the condition of the collection system. A sewer and manhole database was subsequently developed but investments in GIS technology were deferred until the early 1990s when desktop PCs became powerful enough to run sophisticated GIS applications. In 1993 a GIS needs analysis study was performed which recommended implementation of a large-scale enterprise-wide GIS. An inhouse effort was started to implement the recommendations of the study. Several sections in the Districts formed a project committee to pilot test GIS technology that could be .

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