Fairfax County GISFairfax County GIS

Presented to the Sully District Council of Civic Association

What Is A GIS?What Is A GIS?

A computer-based tool for mapping and analyzing spatial information

Integrates common database operations such as query and statistical analysis with maps

rlington Blvd

Street

How GIS worksHow GIS works

Links records in a database to features on the map

Features are represented as Points, Lines, & Polygons

Paper to Digital MapsPaper to Digital Maps

County maps were converted to digital layers

Attribute database are attached to the features

County GIS User AgenciesCounty GIS User Agencies Tax Administration Public Works Management &

Budget Park Authority Environmental

Management Juvenile Courts Libraries

Planning and Zoning Mapping Services Transportation Public Schools Health Human Services Police Fire and Rescue

Current Geographic DataCurrent Geographic Data Raster Parcel &

Zoning Orthophotography Airports Census Boundaries Election Boundaries Fire & Rescue

Boundaries Hydrography Industrial Park

Zoning Boundaries Park Areas Radon Gas

Police Patrol Boundaries

Political Jurisdictions

Public Facilities Locations

Railroads Refuse Collection

Areas School

Boundaries School Locations Planning Districts

1”=200’ Soils Solid Waste

Facilities Street

Centerline Network

Streets Supervisor

Districts Tax Map Grid Utility Lines Watershed

Areas Zip Code Areas

Soils and Parcel Map ImagesSoils and Parcel Map Images

GREAT FALLS

RESTON

VIENNA

FAIRFAX

CLIFTON

LORTON

ANNANDALE

ALEXANDRIA

FORT BELVOIR

CENTREVILLE

HERNDON

McLEAN

FALLS CHURCH

SPRINGFIELD

Parks

0 7 Miles

N

EW

S

Where: OWNER = "BOS"

Shape Area Perimeter Parks# Parks-id Name Parkcode Owner

Polygon 6635.15154 329.95784 10 128 BOS

Polygon 135172.49470 3701.93189 14 120 BOS

Polygon 39242.29679 1290.93457 22 119 BOS

Polygon 74514.32268 2102.39752 25 118 BOS

Polygon 397094.31713 2787.89161 27 1179 BOS

Polygon 85736.71291 1306.26132 30 490 BOS

Polygon 4706974.63400 11353.65463 31 755 BOS

Polygon 9921.66110 398.50043 52 493 BOS

Polygon 208664.17003 3810.75766 67 1371 BOS

Polygon 10262.24735 405.25620 71 1070 BOS

Polygon 5990.86836 797.05638 83 1189 BOS

Polygon 11429.90423 427.95714 86 764 BOS

Polygon 52372.38532 1022.16799 87 1065 BOS

Polygon 1450465.39138 5946.36609 96 697 BOS

Polygon 17312.83129 638.63846 97 1069 BOS

Polygon 102880.73614 1608.81369 100 699 BOS

Polygon 235785.02300 2120.88886 111 700 BOS

Polygon 392524.56886 2623.99471 119 747 BOS

Polygon 18713.50918 2001.64724 122 753 BOS

Polygon 20137.20104 591.96273 125 1170 BOS

Polygon 41113.04034 849.96990 126 1140 BOS

Polygon 30293.66247 713.30244 132 1076 BOS

Polygon 28117.48676 1058.58315 133 1075 BOS

Polygon 43344.97997 834.58696 134 750 BOS

Polygon 190211.94802 4391.18056 136 754 BOS

Polygon 18340.12570 1410.71436 142 498 BOS

Polygon 5140.88163 851.55931 143 496 BOS

Polygon 9789.74784 1256.80532 147 497 BOS

Polygon 40446.10615 815.13400 157 1168 BOS

Polygon 205431.05455 5264.63457 158 722 BOS

School Attendance Area RealignmentSchool Attendance Area Realignment

School planners, working with parents, can make better new school boundary decisions.

DHS Child Care Provider LocationsDHS Child Care Provider Locations

This application will let parents find daycare providers near their home or job.

DOT Commuter RidematcherDOT Commuter Ridematcher Allows County

Transportation operators to geographically match commuters with each other through the WMCOG Ridematch database.

DTA BOE MapsDTA BOE Maps

DTA Assessors use GIS to create maps for Board of Equalization cases showing the subject parcel and comparable properties.

OCP Employer StatisticsOCP Employer Statistics

Planners use GIS to thematically display multiple databases to analyze local employer job trends.

# Employers by Traff ic Analysis Zones

1 - 609609 - 20402040 - 59125912 - 11189

DHCD Conservation Area Study

Each parcel could be classified and displayed according to its housing condition.

Population DemographicsPopulation Demographics

Budget analysts combined demographic data with GIS census track boundaries to produce population density maps.

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I-66

Rt. 50

DRANESVILLE

HUNTER MILL

SULLY PROVIDENCE

MASON

BRADDOCK

SPRINGFIELD

LEE

MT.VERNON

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I-66

Rt. 50

McLEAN

BAILEY'S

LINCOLNIA

BULL RUN

ANNANDALE

SPRINGFIELD

LOWER POTOMAC

POHICK

MT.VERNON

ROSE HILL

FAIRFAXJEFFERSON

VIENNA

UPPERPOTOMAC

Rental Housing LocationsN

EW

S Fairfax County Office of Management and Budget

Number of Units by Supervisor District Number of Units by Planning District

2 0 2 4 MilesMap Authors: Ken Holbert (GIS), Sonja Vaughan (OMB)Housing Data: OMBBasemap Data: GIS and Mapping Services

Supervisor Districts by number units821 - 17291729 - 53265326 - 71487148 - 1006310063 - 10918

Rental Complexes by Structure Type××××

GARDENHIGHRISEMIDRISETOWNHOUSE

Planning Districts by number of units726 - 11001100 - 24432443 - 44584458 - 58445844 - 9392

TOWNHOUSEMIDRISEHIGHRISEGARDEN

××××

Rental Complexes by Structure Type

BRADDOCK

DRANESVILLE

HUNTER MILL

LEE

MASON

MT. VERNON

PROVIDENCE

SPRINGFIELD

SULLY

120001000080006000400020000

Number of Units by Supervisor District

ANNANDALEBAILEYS

BULL RUNFAIRFAX

JEFFERSONLINCOLNIA

LOWER POTOMACMCLEAN

MOUNT VERNONPOHICK

ROSE HILLSPRINGFIELD

UPPER POTOMACVIENNA

9000800070006000500040003000200010000

Number of Units by Planning District

Print Date: 5/13/98

1”=200’ Data Conversion1”=200’ Data Conversion

Data conversion has started in the southeast corner and will move North and then West

10% of the planimetric tiles (building footprints and paved areas) have been delivered

75% of Orthophotography has been delivered

Expected completion: Spring 1999

Will be Completed Spring of 1999Will be Completed Spring of 1999

##

#

#

#

#

#

#

250

225

247.5264.7

239.2

223.0

241.9

262.2

245.9

250.0

245.3

Will be Completed Spring of 1999Will be Completed Spring of 1999

R-4

R-3

R-3

R-3

C-6

C-6

C-8

C-6

C-8

R-4

Will be Completed Summer of 1999Will be Completed Summer of 1999

Public Access to GISPublic Access to GIS Maps and Publications

– 1st floor of Government Center– GIS and Mapping Suite 117

CDROM Data Distribution– Single site license: $75.00 – Arc/Info Coverage Format– All layers except Police and Soils– Copyrighted

County Internet Site– www.co.fairfax.va.us/gov/dit/gis/default.htm