GIS Applications for Water, Wastewater, and Stormwater Systems - Chapter 4 docx

... 30-min), and 1˚ units. The 7. 5- and 15-min DEMs are included in the large-scale category, whereas 2-arc-sec DEMs fall within the intermediate-scale category and 1˚ DEMs fall within the small- scale ... manual and DEM delineations. Figure 4. 13, Figure 4. 14, and Figure 4. 15 show the DEM streams for cell threshold values of 100, 250, and 500. These figures also show the ma...

Ngày tải lên: 11/08/2014, 13:22

... imagery and GIS as a land inventory tool allowed SANDAG to see the region in a new way and permitted rapid change detec- tion. The GIS- based LULC-mapping approach provided SANDAG with current and verified ... has started to decline. For example, Landsat -4 and -5 imagery used to cost $44 00 per scene; now the same scene costs $600. After the launch of QuickBird-2 and OrbVi...

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... computing with wired and wireless communications, GIS, GPS, and remote sensing technologies (Karimi and Hammad, 20 04) . GIS lies at the heart of most mobile information resource systems. For example, ... (1) field GIS software (e.g., ESRI’s ArcPad); (2) lightweight, reliable, and affordable field computing devices; (3) more accurate and affordable GPS receivers; and (4) wir...

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... starting point for developing GIS applications: no maps, no applications. In this chapter we learned about some basic applications of GIS maps. Advanced applications will be presented in subsequent chapters. ... the four main applications of GIS, which are mapping, monitor- ing, modeling, and maintenance and are referred to as the “4M applications. ” In this chapter...

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... this chapter is to understand the importance and scope of geographic information system (GIS) applications for water, wastewater, and storm- water systems. MAJOR TOPICS • Definition of GIS applications • ... History of GIS applications • Advantages and disadvantages of GIS applications • Evolving and future GIS applications and trends • Methods of deve...

Ngày tải lên: 11/08/2014, 13:22

... into 2D and 3D environ- ments. In July 2001, ERDAS’s geographic-imaging software company was acquired by Leica Geosystems to form a new GIS and Mapping Division for growth in the GIS and remote ... location, model, and color of the vehicle. The GPS applications for the water, wastewater, and stormwater systems, though not as dramatic as TeleAid, are revolutionizing...

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... SITES CHAPTER SUMMARY This chapter provided information on the GIS applications for serving water, wastewater, and stormwater system maps on the Internet. The Internet is the fastest growing and ... CHAPTER 6 Internet Applications Internet-based mapping applications are changing the way people use and manage geographic information for their water, wastewa...

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... 6: 04 PM Copyright © 2005 by Taylor & Francis CHAPTER 8 Mapping GIS provides powerful and cost-effective tools for creating intelligent maps for water, wastewater, and stormwater systems. ... objective of this chapter is to understand how to create GIS maps for water, wastewater, and stormwater systems. MAJOR TOPICS • Mapping basics • Map ty...

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... monitoring data for effective operation and management of water, wastewater, and stormwater systems. MAJOR TOPICS • Rainfall monitoring • Satellite and radar rainfall data • Flow-monitoring applications • ... sewage collection systems and watersheds. This chapter will present the methods and exam- ples of how to use GIS for installing and maintaining the mo...

Ngày tải lên: 11/08/2014, 13:22

... modeling methods for water, wastewater, and stormwater systems. GIS applications provide an accurate and manageable way of estimating model input parameters such as node demands, sewage flows, and runoff ... Taylor & Francis Land-Use Data Estimation Dry- and wet-weather flows from sewersheds depend on land use. Most rainfall- runoff models, therefore, need land-...

Ngày tải lên: 11/08/2014, 13:22