The Digital Flood Insurance Rate Map (DFIRM) Database depicts flood risk information and supporting data used to develop the risk data. The primary risk classifications used are the 1-percent-annual-chance flood event, the 0.2-percent-annual- chance flood event, and areas of minimal flood risk. The DFIRM Database is derived from Flood Insurance Studies (FISs), previously published Flood Insurance Rate Maps (FIRMs), flood hazard analyses performed in support of the FISs and FIRMs, and new mapping data, where available. The FISs and FIRMs are published by the Federal Emergency Management Agency (FEMA). The file is georeferenced to earth's surface using the Universal Transverse Mercator Coordinate System (ZONE 18N) and Transverse Mercator projection. The specifications for the horizontal control of DFIRM data files are consistent with those required for mapping at a scale of 1:12,000.

The Philadelphia, PA Meter-Scale Urban Land Cover (MULC) dataset comprises 7184 km2 around the city of Philadelphia and surrounding land in parts of fourteen counties within four states (PA, DE, NJ, MD): New Castle County in Delaware and Cecil County Maryland; Bucks, Chester, Lancaster, Montgomery, Philadelphia, and Delaware Counties in Pennsylvania; and Burlington, Mercer, Camden, Gloucester, Salmen and Atlantic Counties in New Jersey. These MULC data and maps were derived from several sources from multiple years: leaf-off LiDAR; 1-m pixel, four-band (red, green, blue, and near-infrared) leaf-on aerial photography acquired from the United States Department of Agriculture (USDA) National Agriculture Imagery Program (NAIP); 1-ft pixel orthoimagery; additional leaf-on and leaf-off imagery as well as ancillary vector data (e.g., roads, building footprints.). Ten land cover classes were mapped: Water, Impervious Surfaces, Soil/Barren, Tree/Forested, Shrub, Grass/Herbaceous NonWoody Vegetation, Agriculture, Orchard, and Wetlands (Woody and Emergent). Wetlands were delineated using the best available existing wetlands data, which was a National Wetlands Inventory (NWI) layer. An analysis of 600 completely random and 251 stratified random photo-interpreted land cover reference points yielded a simple overall user's accuracy (MAX) of 78% and an overall fuzzy user's accuracy (RIGHT) of 86% (see confusion matrices below). This dataset was produced by the University of Vermont Spatial Analysis Laboratory, the United States Forest Service Urban Tree Canopy (UTC) assessment program, and the US EPA to support research and online mapping activities related to the EnviroAtlas. EnviroAtlas (https://www.epa.gov/enviroatlas) allows the user to interact with a web-based, easy-to-use, mapping application to view and analyze multiple ecosystem services for the contiguous United States. The dataset is available as downloadable data (https://edg.epa.gov/data/Public/ORD/EnviroAtlas) or as an EnviroAtlas map service. Additional descriptive information about each attribute in this dataset can be found in its associated EnviroAtlas Fact Sheet (https://www.epa.gov/enviroatlas/enviroatlas-fact-sheets).

Bucks County, PA has a A wealth grade. Median household income: $112,368. Unemployment rate: 4.5%. Income grows 5.0% yearly.

This EnviroAtlas dataset demonstrates the effect of changes in pollution concentration on local populations in 3974 block groups in Philadelphia, PA. The US EPA's Environmental Benefits Mapping and Analysis Program (BenMAP) was used to estimate the incidence of adverse health effects (i.e., mortality and morbidity) and associated monetary value that result from changes in pollution concentrations for Philadelphia City and County, PA, New Castle County, DE, Cecil County, MD, Camden County, NJ, Atlantic County, NJ, Gloucester County, NJ, Burlington County, NJ, Delaware County, PA, Bucks County, PA, Chester County, PA, and Montgomery County, PA. Incidence and value estimates for the block groups are calculated using i-Tree models (www.itreetools.org), local weather data, pollution data, and U.S. Census derived population data. This dataset was produced by the USDA Forest Service with support from The Davey Tree Expert Company to support research and online mapping activities related to EnviroAtlas. EnviroAtlas (https://www.epa.gov/enviroatlas) allows the user to interact with a web-based, easy-to-use, mapping application to view and analyze multiple ecosystem services for the contiguous United States. The dataset is available as downloadable data (https://edg.epa.gov/data/Public/ORD/EnviroAtlas) or as an EnviroAtlas map service. Additional descriptive information about each attribute in this dataset can be found in its associated EnviroAtlas Fact Sheet (https://www.epa.gov/enviroatlas/enviroatlas-fact-sheets).

This is layer show the geographic boundary for Montgomery County. The original source data has been edited to best match orthophotography, natural features and other known boundary markers. Boundary is for reference purposes only and not a legal surveyed boundary.

Link to the ScienceBase Item Summary page for the item described by this metadata record. Service Protocol: Link to the ScienceBase Item Summary page for the item described by this metadata record. Application Profile: Web Browser. Link Function: information

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 orthoimagery consists of 1-foot pixel resolution, 3-band, natural color county mosaics in JPEG 2000 format covering the Delaware Valley Regional Planning Commission’s (DVRPC) 9-county region (Bucks, Chester, Delaware, Montgomery, and Philadelphia counties in Pennsylvania; and Burlington, Camden, Gloucester, and Mercer counties in New Jersey). This orthoimagery was acquired in the late winter/early spring of 2020 by NearMap. An orthoimage is remotely sensed image data in which displacement of features in the image caused by terrain relief and sensor orientation have been mathematically removed. Orthoimagery combines the image characteristics of a photograph with the geometric qualities of a map.

Link to the ScienceBase Item Summary page for the item described by this metadata record. Service Protocol: Link to the ScienceBase Item Summary page for the item described by this metadata record. Application Profile: Web Browser. Link Function: information

Aerial imagery is an essential tool for planning and analysis. It presents a comprehensive view of regional conditions. Having access to aerial imagery from various years provides the user with a chronological record of land use patterns. Aerials have been an important component of DVRPC's planning efforts for many years. They are also a popular source of information for consultants, developers, engineers, realtors, and the general public.

Orthoimagery consists of rectified or geometrically corrected aerial images that have been processed so that any distortions stemming from topographic relief and camera position are removed. This results in an accurate representation of the Earth's surface. Due to its uniform scale, distances between features can be measured on an orthoimage. Where these features touch the ground, they are shown in their true x and y map position.

Available for the years 2000 through 2020 in five-year increments

• Covers the entire 3,833 square mile DVRPC 9-county region (Bucks, Chester, Delaware, Montgomery, and Philadelphia counties in Pennsylvania and Burlington, Camden, Gloucester, and Mercer counties in New Jersey)
• The 2000 orthoimagery is grayscale with a 1.5 sq. ft. pixel resolution, a horizontal positional accuracy of +/-5', and a design scale of 1" = 200'
• The 2005 and 2010 orthoimagery is 3-band, natural color, with a 1 sq. ft. pixel resolution, a horizontal positional accuracy of +/-5', and a design scale of 1" = 200'
• The 2015 orthoimagery is 4-band (allows for display in either natural color or color infrared) with a 1 sq. ft. pixel resolution, a horizontal positional accuracy of +/-5', and a design scale of 1" = 200'
• The 2000, 2005, 2010 and 2015 orthoimagery tiles are referenced to their respective State Plane map coordinate system (either NJ State Plane NAD83 or PA State Plane South Zone NAD83)
• Each orthoimagery tile covers approximately 1.6 square miles of land area; Using Geographic Information System (GIS) software, individual tiles can be viewed together as a seamless mosaic of a larger area
• The 2020 orthoimagery is 3-band, natural color with a 1 sq. ft. pixel resolution, a horizontal positional accuracy of +/-5', and a design scale of 1" = 200'; Available as county mosaics in JPEG 2000 format referenced to UTM Zone 18N - NAD83 (2011)

Feature layer of BicyclePA Routes for use with PennDOT's PennShare and OpenData applicationsBicyclePA routes were designed by experienced bicyclists to provide those who wish to traverse the state by bicycle with a guide to some of the Commonwealth’s highways and rail-trails. Some of these routes contain bike lanes or other facilities designed specifically for bicyclists traveling within the four corners of the Commonwealth. Every bicyclist is responsible for his or her personal safety and welfare and for remaining alert and mindful of conditions on the roads or trails. There are 10 designated BicyclePA routes- A, E, G, J, JS, L, S, V, Y, and Z. A: BicyclePA Route A runs north/south from Presque Isle State Park on Lake Erie to the West Virginia border just north of Morgantown in Greene County. E: BicyclePA Route E runs north/south from the New Jersey border along the Delaware River in Morrisville, PA to the Delaware border in Marcus Hook, PA. G: BicyclePA Route G runs north/south from the New York border in Lawrenceville, Tioga County to the Maryland border in Bedford County. J: BicyclePA Route J runs north/south from the New York border in Sayre, Bradford County to the Maryland border in two places: New Freedom, York County and south of Gettysburg in Adams County. JS: BicyclePA Route JS runs east/west between Seven Valleys in York County and Gettysburg in Adams County. L: BicyclePA Route L runs north/south from the New York border south of Binghamton in Susquehanna County to the Delaware border north of Wilmington in Chester County. S: BicyclePA Route S runs east/west from the New Jersey border at the Washington Crossing Military Park on the Delaware River in Bucks County to the West Virginia border east of Wheeling in Washington County. V: BicyclePA Route V runs east/west from the New Jersey border in Portland (Northampton County) to the Ohio border in Lawrence County, roughly parallel with Interstate 80. Y: BicyclePA Route Y runs east/west from the New York border in Pike County to the Ohio border in Crawford County. Z: BicyclePA Route Z runs east/west along the shore of Lake Erie from the New York border to the Ohio border in Erie County. Send your bicycle/pedestrian questions to ra-pdbikepedpa@pa.gov For contact information for your local bike/ped coordinator, please visit the Bike/Ped Coordinators Contact Info Web Page To view the Pennsylvania Bicycle Driver’s Manual, click here.

This orthoimagery consists of 1-foot pixel resolution, 3-band, natural color county mosaics in JPEG 2000 format covering the Delaware Valley Regional Planning Commission’s (DVRPC) 9-county region (Bucks, Chester, Delaware, Montgomery, and Philadelphia counties in Pennsylvania; and Burlington, Camden, Gloucester, and Mercer counties in New Jersey). This orthoimagery was acquired in the late winter/early spring of 2020 by NearMap. An orthoimage is remotely sensed image data in which displacement of features in the image caused by terrain relief and sensor orientation have been mathematically removed. Orthoimagery combines the image characteristics of a photograph with the geometric qualities of a map.

Mosaic - An orthoimage is remotely sensed image data in which displacement of features in the image caused by terrain relief and sensor orientation have been mathematically removed. Orthoimagery combines the image characteristics of a photograph with the geometric qualities of a map. This project consists of the creation of 3-band, 24 bit color digital orthophoto tiles for the 5-county, Pennsylvania portion DVRPC?s region utilizing a Leica ADS40 digital imaging system. The tiles were delivered in both GeoTIFF and MrSID MG3 formats. A GeoTIFF is a TIFF file which has geographic (or cartographic) data embedded as tags within the TIFF file. The geographic data can then be used to position the image in the correct location and geometry within a geographic information system (GIS) display. MrSID (Multi-resolution Seamless Image Database) is a proprietary, wavelet-based, image compression file format (*.sid) developed and patented by LizardTech, Inc. A 20:1 compression ratio was used for the MrSIDs. The complete data set contains 1,540 full ortho tiles in Pennsylvania State Plane South coordinate system, NAD83. The individual tiles measure 5,055' x 8,745' at a 1.0' pixel size. There is no image overlap between adjacent tiles. Counties include: Bucks, Chester, Delaware, Montgomery, and Philadelphia