GRANIT data is archived to disc in directories that correspond to the National Spatial Data Infrastructure (NSDI) data categories. The directories and their associated data layers include: DIRECTORY SUB-DIRECTORY DATA LAYERS Administrative and Political Boundaries d-political Political Boundaries d-quads d-quads7.5 USGS 7.5' Quads d-quads15 USGS 15' Quads d-statcensus Statistical Census Boundaries Agriculture and Farming d-agpest Agricultural Pesticides Biology and Ecology d-eelgrass2004 Great Bay Estuary Eelgrass, 2004 d-eelgrass2005 Great Bay Estuary Eelgrass, 2005 d-eelgrass2006 Great Bay Estuary Eelgrass, 2006 d-eelgrass2007 Great Bay Estuary Eelgrass, 2007 d-fisheries d-fishhuc12 Freshwater Fisheries in NH - Presence by Watershed d-fishpbnh Freshwater Fisheries in NH - Presence by Town Cultural, Society and Demographic d-access_sites Access Sites to Public Waters d-correctional_institu New Hampshire Correctional Institutions d-ems New Hampshire Emergency Management Services d-firestations New Hampshire Fire Stations d-gnis Geographic Names Information System d-graveyards Graveyards d-historic_inv Historic Point Inventory d-law_enforcement New Hampshire Law Enforcement Locations d-nrhp National Register of Historic Places d-nursing_homes New Hampshire Nursing Homes d-oeprecinv OEP Recreation Inventory d-places_of_worship New Hampshire Places of Worship d-public_health_departm New Hampshire Public Health Departments d-recfac Recreation Facilities d-sprawl d-cca Community Center Areas d-kd Key Destinations Elevation and Derived Products d-bathymetry Bathymetry d-elevationdem USGS Digital Elevation Models d-elevationdlg USGS Digital Line Graphs - Hypsography d-elevationtvc USGS Tagged Vector Contours Environment and Conservation d-clearcut Clear Cut Inventory d-conservation Conservation/Public Lands d-developedshorelines Developed Shorelines d-impervious d-1990 Impervious Surfaces 1990 d-2000 Impervious Surfaces 2000 d-2005 Impervious Surfaces 2005 d-landcover d-1995 Land Cover Assessment 1995 d-2001 Land Cover Assessment 2001 d-landuse d-1962 Land Use 1962 d-1974 Land Use 1974 d-1998 Land Use 1998 d-lcp The Land Conservation Plan for NH's Coastal Watersheds d-focus_areas Conservation Focus Areas d-forest_model Forest Ecosystems Co-occurrence Model d-forest_zones Forest Ecosystem Zones d-watersheds High-quality Stream Watersheds d-nsn NH Natural Services Network 2007 d-spot SPOT Derived Land use d-tri Toxics Release Inventory d-wap NH Wildlife Action Plan 2010 Geological and Geophysical d-bedrock Bedrock Geology d-soil Soil Units d-surficial Surficial Geology Inland Water Resources d-aquifer d-aquiferboundaries Aquifer Boundaries d-lowflow Low Flow Sites d-saturatedthickness Saturated Thickness d-seismic Seismic Lines d-transmissivity Transmissivity d-watertable Water Table Elevation d-wellsborings Wells, Borings, and Springs d-dfirms Digital Flood Insurance Rate Maps (floodplains) d-nhhd NH Hydrography Dataset d-nhhd_shp NH Hydrography Dataset - Shapefile Extract d-watershed Watershed Boundaries d-wetland d-coastal Coastal Wetlands d-greatbay Great Bay Wetlands d-nhwetlandsbase NH Wetlands Base Map d-nwi National Wetlands Inventory Location and Geodetic Network d-geodetic Geodetic Control Transportation Networks d-railroads Railroads d-roads NH Public Roads Utilities and Communication d-celltowers Cell Towers d-pipelines Pipelines Please reference the "GRANIT Data Catalog" for information on the tiling scheme used for each data layer. Full FGDC (Federal Geographic Data Committee) compliant metadata is provided for each layer if available. If FGDC metadata is not available, each coverage is internally documented in associated data files. The files are accessed with TABLES, INFO, ArcCatalog, or your database manager, depending on the platform being used. Each documentation file has the same filename prefix as the coverage. The filename extension indicates the type of documentation. The types are listed below: General coverage documentation......DOC Polygon attribute documentation.....PCODE Point attribute documentation.......TCODE Arc attribute documentation.........ACODE Text attribute documentation........XCODE Grid attribute documentation........VCODE In addition to the above files, certain directories will contain coverage-specific text/doc files providing additional notes regarding the data and/or available documentation files. *** Unless otherwise noted, all spatial data is referenced to New Hampshire State Plane Feet, NAD83.