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Westchester County GIS Overview Westchester County Municipal Administrators Association Luncheon November 14, 2001
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Topics for Discussion: Some GIS Terms & Concepts Current Projects and Issues Questions and Answers
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Many GIS Projects: “Are started with little planning, little design, and great expectations”
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GIS Integrates Data GPS Video Multi- Media RDBMS Business Data Geographic Data Satellite Photos Aerial Photos Cable GIS
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Municipal GIS Applications: Internet Mapping Infrastructure Management Emergency Services & Dispatching Tax Mapping & Land Records Environmental & Land Use Planning Economic Development Health & Human Services Pavement & Bridge Management Systems Schools, Libraries, and Public Access
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Benefits of GIS: Improved information management Increased information analysis potential Data centrally located and avoids duplication –Extensive cost efficiencies – once systems are built Increased data access for decision making Increased access to information –Provide public access to government information
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5 GIS Major Components Hardware Software Data Applications & Routines People
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Types of GIS Products On-line data access and analysis Presentation & draft quality maps; slide shows Tabular reports & print outs Export files for electronic distribution Make information available for the internet
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Major Costs Associated with GIS Implementation: Data Development, Conversion & Maintenance (75%-80%) Staffing (full-time GIS/technical support) Consulting - Application Development/Programming -General; all areas of GIS Hardware & Software (w/maintenance) Operations/Materials & misc. support
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Local Government Assistance: Cortlandt Croton-On-Hudson Greenburgh Harrison Hastings-on-Hudson Irvington Lewisboro Mamaroneck (Town/Village) Mount Kisco Mount Pleasant Mount Vernon New Castle New Rochelle North Castle North Salem Ossining (Town/Village) Pound Ridge Somers Yorktown
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Westchester County-Sewer Lines
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Pound Ridge- Tax Maps
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County Base Mapping Project
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Primary Project Objectives: Identify common base mapping needs for government, utilities, and business & professional organizations Review administrative and administrative issues (FOIL, staffing, data distribution) Review cost sharing options Create Uniform, County-wide Digital Base Map
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Some Technical Specifications: 2,200 countywide tiles Color digital orthophotography 1” = 100’ land base 5’ contours 35 features to be captured, including edge of payment, building footprints, normal planimetrics Consistent with NYC database design Seamless county-wide coverages Municipal data “bundles” a deliverable in ArcView shapefile format
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At the direction of the County Executive, all County GIS data sharing requests and distribution policies are currently suspended and under review as a result of the events of September 11, 2001
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Pitfalls of a GIS Overstating benefits Failure to define goals No long-term & strategic plan Lack of management or technical support Lack of user involvement/user training Budget overrun (budget underestimation) Hard to expand or modify existing/legacy systems
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GIS Myths: GIS turns bad data into good data GIS software has a “Just Do It” command “You can save that in WORD format, right?” GIS is a desktop publishing program GIS can present everything on 8x11 paper in B/W Staff don’t require training & education (No time!) We’re going to make a lot of money selling this data! That map can be scanned, right? Buy just one copy & put it on every machine Why are we replacing GIS with GPS? “I can do this with MapQuest & MapBlaster, so…..”
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The IT Future Will Favor Spatial Data Investments That: Multi-purpose Maintained (updated) Simple (minimum structure) Integrated across disciplines Standard Models Documented (metadata) Shared/Open
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Change Management: “Experience has shown that even the best technology strategies stand little chance of success if the workforce doesn’t accept and adopt them”
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Westchester County GIS Andrew J. Spano County Executive Sam Wear, GIS Manager stw1@westchestergov.com http://giswww.westchestergov.com
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