Presentation on theme: "Presented to the Sully District Council of Civic Association"— Presentation transcript:
1 Presented to the Sully District Council of Civic Association Fairfax County GISPresented to the Sully District Council of Civic Association
2 What Is A GIS?A computer-based tool for mapping and analyzing spatial informationIntegrates common database operations such as query and statistical analysis with maps
3 How GIS works Links records in a database to features on the map Features are represented as Points, Lines, & PolygonsData is linked to features on the mapLogical queryWhere are the fire stationsPublic facilites are pointsPolysLines
4 Paper to Digital Maps County maps were converted to digital layers Attribute database are attached to the featuresModify graphic to show manual products on left side and digital products on the right
5 County GIS User Agencies Planning and ZoningMapping ServicesTransportationPublic SchoolsHealthHuman ServicesPoliceFire and RescueTax AdministrationPublic WorksManagement & BudgetPark AuthorityEnvironmental ManagementJuvenile CourtsLibraries
8 Emphasize the connection between tabular data is joined to features on the map. Note % of County covered by park land
9 School Attendance Area Realignment School planners, working with parents, can make better new school boundary decisions.The GIS allows planners to recalulate the school age popluation of alternative boundaries automatically. Instead of manually summarizing..
10 DHS Child Care Provider Locations This application will let parents find daycare providers near their home or job.Make graphic Map only. Highlight in RED location
11 DOT Commuter Ridematcher Allows County Transportation operators to geographically match commuters with each other through the WMCOG Ridematch database.
12 DTA BOE MapsDTA Assessors use GIS to create maps for Board of Equalization cases showing the subject parcel and comparable properties.Clearer graphicDTA assessors use these maps to maintain fair and equitable assessments.
13 OCP Employer Statistics Planners use GIS to thematically display multiple databases to analyze local employer job trends.
14 DHCD Conservation Area Study Each parcel could be classified and displayed according to its housing condition.
15 Population Demographics Budget analysts combined demographic data with GIS census track boundaries to produce population density maps.
17 1”=200’ Data ConversionData conversion has started in the southeast corner and will move North and then West10% of the planimetric tiles (building footprints and paved areas) have been delivered75% of Orthophotography has been deliveredExpected completion: Spring 1999
21 Public Access to GIS Maps and Publications CDROM Data Distribution 1st floor of Government CenterGIS and Mapping Suite 117CDROM Data DistributionSingle site license: $75.00Arc/Info Coverage FormatAll layers except Police and SoilsCopyrightedCounty Internet Site