Recommended Best Practices for the Use of the FHWA Traffic Noise Model (TNM)

Appendix B. A Small Sample of Additional Sources for Geospatial Data

Table B-1. Sample of the Sources of Geospatial and Elevation Data used by State Highway Agencies for Traffic Noise Studies
State	Data Type	Fee	Data Source (URL if available)
FL	GIS	None	Florida Geographic Data Library https://www.fgdl.org/metadataexplorer/explorer.jsp
KS	Elevation and LiDAR (limited coverage), imagery and raster	None	State of Kansas GIS Data Access & Support Center (DASC) http://kansasgis.org/
MA	MassGIS Topo Layers	Und.¹	Office of Geographic Information (MassGIS) https://www.mass.gov/orgs/massgis-bureau-of-geographic-information
MT	1-Kilometer Digital Elevation Model (1992)	Free	Office of Geographic Information (MassGIS) https://www.mass.gov/orgs/massgis-bureau-of-geographic-information
	1:250,000 scale digital elevation model	Free	Montana State Library / Defense Mapping Agency https://mslservices.mt.gov/Geographic_Information/Data/DataList/datalist_Details?did={81782118-6B47-4E55-B1A8-358A193CC899}
	USGS MTTopographic Quadrangle Images (1998): 24k, 100k, and 250k Digital Raster Graphics (DRGs).	Free	Montana State Library http://geoinfo.msl.mt.gov/data/DRG
	USGS 24k and 100k quadrangles in DRGs	Free	Montana Topographic Map Finder: View and Download https://mslservices.mt.gov/Geographic_Information/Applications/DigitalAtlas/Default
NH	DEM and LiDAR (upon request, where available)	Free	New Hampshire's Statewide GIS Clearinghouse http://www.granit.unh.edu/
OH	Point elevations	Und.¹	Daft Logic (appears to be of very limited use; able to check elevation on a point-by-point basis; doesn't appear that topographic data can be downloaded) https://www.daftlogic.com/sandbox-google-maps-find-altitude.htm
TN	Shapefiles	Free	https://viewer.nationalmap.gov/advanced-viewer/
	DGN Files	$75 per tile²	Metro Nashville TN GIS https://www.nashville.gov/Planning-Department/Mapping-and-GIS/Map-and-Data-Sales.aspx
	Shapefiles or DWG	$100 per map sheet²	Knoxville TN GIS (KGIS) http://www.kgis.org/portal/Products/DigitalData/PurchaseInformation.aspx
	Shapefiles or DWG	Variable	Hamilton County TN http://gis.hamiltontn.gov/
	On-line GIS	Free	Shelby County, TN Register of Deeds (2' Contours) http://gis.register.shelby.tn.us/
	On-line GIS	Free	Metro Nashville, TN GIS (2' Contours) https://maps.nashville.gov/ParcelViewer/
	On-line GIS	Free	Knoxville, TN (4' Contours) GIS http://www.kgis.org/kgismaps/map.htm
	On-line GIS	Free	Hamilton County, TN GIS (2' Contours) http://gis.hamiltontn.gov/
	On-line GIS	Free	Williamson County, TN GIS (5' Contours) http://www.williamsoncounty-tn.gov/371/Maps
	On-line GIS	Free	Wilson County GIS (5' Contours) http://geopowered.wilson.wilsontngis.com/
VA	LiDAR (limited coverage)	Und.¹	Virginia LiDAR http://vgin.maps.arcgis.com/apps/Viewer/index.html?appid=1e964be36b454a12a69a3ad0bc1473ce#! (note that this site was undergoing an update at the time this report was published.)
VA	DEM	Und.¹	Via ArcGIS online (check ESRI web site)
WA	In-Roads contours	None	None, Topographic Details are surveyed by project design offices.
	Community Planning, Traffic, Other Geospatial	None	WSDOT Online Map Center http://wsdot.maps.arcgis.com/home/index.html
	Other WSDOT GIS Data	None	WSDOT GeoData Distribution Catalog http://www.wsdot.wa.gov/mapsdata/geodatacatalog/default.htm
U.S.	USGS NED		National Elevation Dataset (NED) https://www.usgs.gov/faq/mapping-remote-sensing-and-geospatial-data
	USGS National Map		https://viewer.nationalmap.gov/advanced-viewer/ https://nationalmap.gov/factsheets.html State 3DEP Fact Sheets; “The 3D Elevation Program (3DEP) initiative is being developed to respond to growing needs for high-quality topographic data and for a wide range of other three-dimensional representations of the Nation's natural and constructed features.”
	The USGS Store: Download 7.5 minute, 15 minute, 30 minute and larger DRGs.	Free - To download DRGs; $15.00 for Hard Copy Maps	https://store.usgs.gov/

¹ “Und” = undetermined

² Fee may be waived per agreement

Note: The URLs for the sources of geospatial and elevation data shown in this table were provided by the SHAs in early 2015. In mid-2015, the USGS updated several links to the The National Map and other related web pages. The reader is directed to the following URL which provides links to the The National Map and other sources for geospatial and topographic data and information: https://nationalmap.gov/.

Table B-2. Other Examples of Sources for Geospatial Data
State	Data Source (URL if available)
California	State of California Geoportal http://portal.gis.ca.gov/geoportal/catalog/main/home.page
Connecticut	Connecticut Geospatial Information Systems Council http://www.ct.gov/gis/site/default.asp
Iowa	Iowa Department of Natural Resources: Mapping and GIS http://www.iowadnr.gov/Conservation/Mapping-GIS Iowa Geodata (formerly Natural Resources Geographic Information Systems Library) https://geodata.iowa.gov/
North Carolina	Center for Geographic Information and Analysis (CGIA) https://it.nc.gov/center-geographic-information-and-analysis-cgia or North Carolina Department of Transportation https://connect.ncdot.gov/resources/gis/Pages/default.aspx http://www.nconemap.com/
North Dakota	North Dakota GIS Hub Data Portal https://gishubdata.nd.gov/
Rhode Island	http://www.edc.uri.edu/
South Carolina	South Carolina Geographic Information Systems http://gis.sc.gov/data.html Department of Natural Resources http://www.dnr.sc.gov/gis.html
Wyoming	Wyoming Geographic Information Science Center http://www.uwyo.edu/wygisc/ Wyoming Geospatial Hub http://geospatialhub.org/

Table B-3. Additional Sources of Geospatial Data for the State of Florida
Content Title	Filename	Publisher / On-line Link	Extent
FIVE-FOOT CONTOUR LINES (TOPOGRAPHY)	TOPO	Florida's Water Management Districts and U.S. Geological Survey	COUNTY
FLORIDA 2FT CONTOUR LINES BY COUNTY - 2009 (FILE GEODATABASE FORMAT)	TOPO2FT_GDB	Florida Division of Emergency Management	COUNTY
FLORIDA DIGITAL ELEVATION MODEL (DEM) MOSAIC - 5-METER CELL SIZE - ELEVATION UNITS FEET	FLIDAR_MOSAIC_FT	University of Florida GeoPlan Center	STATE
USGS 1:250,000 DIGITAL ELEVATION MODEL	USGSDEM	U.S. Geological Survey	STATE
HORIZONTAL AND VERTICAL GEODETIC CONTROL DATA FOR FLORIDA - MAY 2014	NGS_POINTS_MAY14	National Oceanic and Atmospheric Administration, National Geodetic Survey	STATE
FLORIDA DIGITAL ELEVATION MODEL (DEM) MOSAIC - 5-METER CELL SIZE - ELEVATION UNITS INCHES	FLIDAR_MOSAIC_IN	University of Florida GeoPlan Center	STATE
FLORIDA DIGITAL ELEVATION MODEL (DEM) MOSAIC - 5-METER CELL SIZE - ELEVATION UNITS CENTIMETERS	FLIDAR_MOSAIC_CM	University of Florida GeoPlan Center	STATE
US SEABED CALCULATED DATA - ATLANTIC OCEAN	SEABED_ATL_CLC_2005	U.S. Geological Survey	STATE
FLORIDA DIGITAL ELEVATION MODEL (DEM) MOSAIC - 5-METER CELL SIZE - ELEVATION UNITS METERS	FLIDAR_MOSAIC_M	University of Florida GeoPlan Center	STATE
FLORIDA 2FT CONTOUR LINES BY COUNTY - 2009 (SHAPEFILE FORMAT) **Note: More counties are available in Geodatabase format due to size limitations. See the layer TOPO2FT_GDB	TOPO2FT_SHP	Florida Division of Emergency Management	COUNTY
BATHYMETRIC CONTOURS FOR THE STATE OF FLORIDA AND SURROUNDING AREAS	BATHYM	National Oceanic and Atmospheric Administration, Coastal Services Center	STATE

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