Each point refers to a single location address. Parcels with multiple addresses will have multiple points. This is an updated layer with a new schema.

The FEMA 100 Year Flood Zones layer contains flood zone values A, AE and AO. This data layer is FEMA's official National Flood Hazard Layer for Chester County. The effective date is 9/29/2017.

Fire Stations

Regional County Boundary

The Land Cover dataset demarcates 14 land cover types by area; such as Residential, Commercial, Industrial, Forest, Agriculture, etc.

If viewing this description on the Western Pennsylvania Regional Data Center’s open data portal (http://www.wprdc.org), this dataset is harvested on a weekly basis from Allegheny County’s GIS data portal (http://openac.alcogis.opendata.arcgis.com/). The full metadata record for this dataset can also be found on Allegheny County’s GIS portal. You can access the metadata record and other resources on the GIS portal by clicking on the “Explore” button (and choosing the “Go to resource” option) to the right of the “ArcGIS Open Dataset” text below.

Category: Geography

Organization: Allegheny County

Department: Geographic Information Systems Group; Department of Administrative Services

Temporal Coverage: 1994

Data Notes:

Coordinate System: Pennsylvania State Plane South Zone 3702; U.S. Survey Foot

Development Notes: The dataset was created by Chester Environmental through combined image processing and GIS analysis of Landsat TM imagery of October 2, 1992, existing aerial photography, hardcopy and digital mapping sources and Census Bureau demographic data. The original dataset was created in 1993, then updated by Chester in 1994.

Other: none

Related Document(s): Data Dictionary (https://docs.google.com/spreadsheets/d/1VfUflfki42mpLSkr1R-up_OXGD3mHnv8tqeXf6XS9O0/edit?usp=sharing)

Frequency - Data Change: As needed

Frequency - Publishing: As needed

Data Steward Name: Eli Thomas

Data Steward Email: gishelp@alleghenycounty.us

Contact CCWRA at wauth@chesco.org and the file will be sent via a Secure File Transfer online portal.Metadata files: The metadata for all datasets, except the Streams and Ponds, Lake and Streams (polygons) from 1993, are posted as .pdf files on the CCWRA web site in a .zip file. Link to download the metadata (3 mb).Layer symbology files: The current, recommended symbology for presenting the GIS data are also posted in a .zip file on the CCWRA web site. Link to download the layer symbology files (less than 1 mb).What is included in the map package:This map package, MS4_BaseGISData_11122016.mpk, includes much of the base map GIS data needed to assist municipalities with developing GIS data on their stormwater infrastructure. The map package includes the recommended symbology.Most of the data layers are set to be scale dependent so that they only 'turn on' when you zoom in to the municipal-level scale.The following layers are part of the map package:Municipal Boundaries2014 PADEP Integrated Water Quality Report (for Chester County)Chester County Road Centerlines Streams (line features) - via 1993 photo interpretationPonds, Lakes and Streams (polygon) - via 1993 photo interpretation2 Foot Contours - PAMAP Program 2006-20082010 Urbanized Areas, U.S. Census BureauImpervious surface from 2010DVRPC 2015 Land Use - Product 1 for Chester CountyWatersheds of Chester CountyThe map package was created on 11/21/2016 using ArcMap 10.3.Contact CCWRA at wauth@chesco.org with questions. We will try to respond the same day, but please understand that we may need a few days to respond.

Regional Municipal Boundary

Chester County road centerlines. This is an updated layer with a new schema.

Proposed land development activity submitted to the County Planning Commission for review as required by the Pennsylvania Municipalities Planning Code, Act 247.

Chester County Fire Hydrants

Description

The PARCELS layer depicts mapped land parcels or real estate properties within Chester County. This data contains geometric representations capturing the general size, shape and location for all of the real estate properties, which can be mapped, on the County's land surface.

ContactsTim Cassel, County of Chester

Tcassel@chesco.org, 610-344-5441, 313 W. Market St Suite 5302 West Chester, PA 19380ResourceUpdate frequency of dataset: Weekly Last Update Date: August 2023Accuracy of attribute: Attributes are correct as per County of Chester Assessment DepartmentPositional accuracy of dataset:The PARCELS layer (and derived copies PARCEL_PUBLISH and PRCL_POLY) was originally created through a conversion process of digitizing hand drawn tax maps into digital form and orientating the tax map sheets and parcels to the features depicted in the 1993 orthophotos. These parcel polygon features were adjusted based on aerial photography dated April 7, 1993, and road centerlines, right-of-way lines and other physical features generated from the same photography. While the imagery has a pixel resolution of 1.5 square feet, a positional accuracy of +/- 5 feet and is designed for use at a scale of 1 inch = 200 feet, the resulting PARCELS horizontal accuracy varies from reasonably accurate in the best cases to less accurate in the worst cases. Subsequent and current map update processes include metes and bounds entry from subdivision and deed information, as well as property corner locations based on GPS points and the utilization of our newest imagery datasets. While the update processes include more accurate methods, the resultant overall accuracy is still dependent on the surrounding parcel fabric's varied accuracy. Planimetric coordinates are based on the Pennsylvania State Plane Coordinate System South Zone and North American Datum 1983 Spatial ReferenceType: ProjectedGeographic Coordinate Reference: GCS North America 1983Projected Coordinate System: NAD 1983 State Plane Pennsylvania SouthLinear Unit: US Survey Feet

Note: There is a difference between land use code and zoning. Land management occurs via a land use designation which determines the land use code. This designation specifies how land and resources within it is managed. Zoning designations define how a property can be developed and used and it is controlled by each township/borough. See below for list of codes.Field DescriptionUPI - Uniform Parcel Identification Number, a unique value given to each parcelPIN_MAP - A Tie-back parcel identification number used to link UPI values to the parcel on which they residePIN_COMMON - A variation of UPI which adds and E for Exempt, U for Utility or T for TrailerPIN_ASMNT - A long form of the UPI number used for assessment purposesCODE (see below for list of codes)MULTI_POLY - Number listing for each parcel of a Multi-Poly parcel. (Example 1 of 20, 2 of 20)POLY_PER_PARCEL - Number of polygons that make up a parcel (0 indicates it is just one polygon)SQFT_PLAN_TOT - The square footage of a parcel (taken from the recorded plan or deed)ACRE_PLAN_TOT - The acreage of a parcel (taken from the recorded plan or deed)ACRE_PLAN_POLY - The acreage of the polygon depicting the parcel, derived by mapping softwareXCOORD - X coordinate of the centroid of the polygonYCOORD - Y coordinate of the centroid of the polygonLOC_ADDRESS - The location address for a parcelMUNI - The municipality the parcel resides inST_NUM - Street Number of the Situs AddressNUM_SUF - Street Number Suffix of the Situs AddressDIR - Street directional of the Situs Address (N, E, S, W)ST_NAME - Street Name of the Situs AddressST_TYPE - Street thorough fair type of the Situs AddressUNIT - Unit Type (see codes below)UNIT_N - Unit numberAD_ROLE - Situs Address Functional Role (see below for list of codes)NO_ADDR_CODE - No longer usedTILE_1200 - Outdated reference system, no longer usedTILE_2400 - Outdated reference system, no longer usedSUBDIV_NUMBER - Number assigned by Recorder of Deeds to a recorded documentLOT - Lot number given to parcel on the recorded planLAND_DEV_ID - Number assigned by Planning Commission for their tracking purposesCREATE_DATE - Date the parcel was mapped into the inactive parcel layerACTIVE_DATE - Date the parcel was added to the active parcel layerOWN1 - Owner of recordOWN2 - Owner of record if more than oneADDR1 - Component of the mailing address on recordADDR2 - Component of the mailing address on recordADDR3 - Component of the mailing address on recordZIP1 - Zipcode of mailing address on recordTAXYR - For Assessment purposesJURIS - Municipality Number where parcel is taxedBOOK - The book number of the recorded deedPAGE - The page number of the recorded deedDEED_REC_DATE - Date the latest deed was recordedLEGAL1 - Description of property location according to the deedLEGAL2 - Description of the taxable property and buildings according to the deedLUC - Landuse code assigned by assessment office. (unrelated to municipal zoning of a parcel) ((see below for list of codes))CLASS - General landuse classification assigned by assessment office (see below for list of codes)LOT_ASSESS - Assessed value of the landPROP_ASSESS - Assessed value of the structuresTOT_ASSESS - Assessed value of the combination of land and structuresFMV319 - Fair Market Value if not under 319FMV515 - Fair Market Value if not under 515LAST_SALE_PRICE - Last recorded sale priceASMNT_DATE - For Assessment Department use onlySCHDIST - The school district within which the parcel resides (see below for list of codes)SUBDIV_NAME - Name of the recorded planPLAN_NUM - Number assigned by the Planning Commission for their tracking purposesMODIFY_DATE - Last edit date of the parcel Data Dictionary Code1000= Parcel1010= Condominium (mother or host parcel)1011= Common Law Condo1020= Hydrography1031= Paper ROW1033= Land polygon with a ROW1034= Land dedicated to an existing ROW1035=- Private Road1040= Open Space1042= Common Area1043= Open Space owned by Homeowners Association1710= Parcel Assessed in Lancaster County but located in Chester County1711= Parcel Assessed in Berks County but located in Chester County1712= Parcel Assessed in Montgomery County but located in Chester County1713= Parcel Assessed in Delaware County but located in Chester County1714= Parcel Assessed in New Castle County but located in Chester County1715= Parcel Assessed in Cecil County but located in Chester County2000= Parcel bisected by a ROW (Duplicate Pin)2040= Open Space (Duplicate Pin)2042= Common Area (Duplicate Pin)2043= Open Space owned by Homeowners Association2010= Condominium (Duplicate Pin) LUCC-10= Banks, Savings&LoanC-20= Gas StationC-30= Restaurants, Stores (Retail)C-35= Condominium StoresC-40= Motels, HotelsC-41= Nursing HomesC-50= Shopping CentersC-60= Office Bldgs/Laboratory/LibraryC-65= Office CondoC-67= Office Condo Common LawC-70= Commercial Garage/Shop/Car DealersC-80= WarehouseC-81= Storage TanksC-90= Entertainment, RecreationC-91= Recreation (Private)C-92= Mobile Home Parks (4+)C-93= Burial Grounds/MausoleumC-94= AirportsC-95= Private SchoolsC-96= Commercial OBY onlyE-10= ChurchesE-11= CemetariesE-12= Service ConnectedE-13= Chester County PropertyE-20= SchoolsE-30= Public UtilitiesE-40= RailroadsE-50= Hospitals, etcE-60= StateE-61= State ParksE-62= FederalE-63= FederalE-70= Local Government (Townships & Boroughs)E-71= Local Government ParksE-80= Non-Profit OrganizationsE-90= Fire CompaniesF-10= Farm 10-19.99 AcresF-20= Farm 20-79.99 AcresF-40= Farm 80 Acres and overM-10= Heavy IndustrialM-20= Light IndustrialM-25= Light Industrial CondominiumM-30= Quarry/LandfillN-01= Not assessed in Chester CountyR-10= Single Family/CabinR-20= Two FamilyR-30= Multi Family/Dorms/SingleR-40= Apartments (4-19 Units)R-50= CodominiumR-55= Town House (Common Law Condo)R-60= Dwelling W/Comm Use Primary RR-61= Dwelling W/Comm Use Primary CR-70= Mobile HomeR-80= Barns, Stables, Pools, Misc BldgR-90= Apartment Complex (20 or more units)R-95= Common Elements (Not Open Space)T-10= Trailers and Mobile HomesU-03= Public UtilitiesU-04= RailroadsV-10= Vacant Land ResidentialV-11= Vacant Land CommercialV-12= Open SpaceV-13= Road Beds, Right of Way, Access WayV-14= Basins, Drainage ControlV-35= Condo Store/Vacant Common ElementV-50= Condo/Vacant Common ElementV-55= Condo Common Law/Common AreaV-65= Condo Office/Vacant Common ElementV-67= Condo Common Law Office/Common AreaClassA= ApartmentC= CommercialE= ExemptF= FarmI= IndustrialR= ResidentialU= Utility

SchDist1= Avon Grove2= Coatesville3= Downingtown4= Kennett Consolidated5= Octorara6= Owen J. Roberts7= Oxford8= Phoenixville9= Twin Valley10= Unionville Chaddsford11= West Chester12= Great Valley13= Tredyffrin-Easttown14= Springford

Police Stations

Ambulance Stations

Bridges in Chester County -- this dataset is primarily derived from PennDOT's Bridge Management System (BMS). Full attribution from BMS is available for state-owned bridges greater than 8 feet in length and locally-owned bridges greater than 20 feet in length. Additional bridges are added for planning purposes, such as bridges listed on a state Bridge Bill or within the Chester County Planning Commission's Transportation Improvement Inventory.

Parcels of land, including trails that are owned in-fee by a municipality and are currently open to the public for recreation.

This data set represent boundaries of district court jurisdictions in Chester County.

This is an update of existing features originally captured in 2013 using 2010 orthoimagery. The minimum size for building features is 200 square feet.

An elevation or topographic contour is a line that connects a series of points of equal elevation and is used to illustrate topography, or relief, on a map. It shows the height of ground above Mean Sea Level (M.S.L.). Numerous contour lines that are close together indicate hilly or mountainous terrain; when far apart, they represent a gentler slope. This layer consists of contours at a five foot interval for Montgomery County. Data was derived from DVRPC and was generated from an aerial topographic survey in 2005.The Delaware Valley Regional Planning Commission's (DVRPC) 9-county region is made up of the following: Bucks, Chester, Delaware, Montgomery, and Philadelphia counties in Pennsylvania; and Burlington, Camden, Gloucester, and Mercer counties in New Jersey.The regional dataset can be be accessed via rest service or downloaded from PASDA

This index represents the coverage of the scans of DVRPC's non-orthorectified, mylar, aerial photo enlargements.. These polygons were developed to define the overall extent of the imagery, and to assist users in locating the particular images of interest to them.This layer includes a "STATUS" attribute field that indicates what scans are missing, however this is not a complete inventory of missing scans.Prior to the year 2000, DVRPC’s aerial imagery consisted of mylar aerial photo enlargements or “atlas sheets”. These atlas sheets were produced from 9x9" aerial photos. The imagery dates from the years 1959, 1965, 1970, 1975, 1980, 1985, 1990, & 1995. The 1959s and 1965s primarily cover the urbanized portion of the DVRPC region (the DVRPC region is made up of nine counties: Bucks, Chester, Delaware, Montgomery, and Philadelphia in Pennsylvania; Burlington, Camden, Gloucester, and Mercer in New Jersey). Subsequent years provide full coverage of the region, minus the occasional missing scan.In order to increase the efficiency of using the historical aerial imagery, the sheets were scanned into TIFF (Tagged Image File Format) files. Each TIFF file ranges between 35-40MB in size. Unlike DVRPC’s more recent aerial imagery (2000 and later), the historical aerials are not “orthorectified” or “orthocorrected”. In other words, they are simply aerial images with no spatial reference or uniform scale. Through the process of georeferencing, the scanned images can be assigned a spatial reference which will enable them to be used more readily in a GIS environment. That said, georeferencing is not orthorectifying or orthocorrecting. What it does allow is for the scan to be displayed relative to other spatially referenced GIS layers. A georeferenced scan does not have the properties of an actual orthoimage. Whereas an orthoimage can be used for making accurate measurements, a georeferenced image cannot, as it does not have the spatial accuracy and uniform scale of an orthoimage.