This data set contains parcel boundaries and associated attribute data for communities in NH. It is compiled and managed by the NH Department of Revenue Administration to support property tax equalization activities. The full project data set includes the GIS parcel mosaic layer and a linked CAMA database with approximately 50 attributes per parcel. A subset of those attributes is included here. See related document for an explanation of attribute codes. Note that attributes may not be available for all parcel polygons. In particular, they may not be available for multi-structure parcels.

Statewide dataset containing the location of state, local and selected private roads and their associated attributes, including road names. For attribute data dictionary, see the file RDIUserGuide.pdf.

The New Hampshire Hydrography Dataset (NHHD) is a feature-based database that interconnects and uniquely identifies the stream segments or reaches that make up the state's surface water drainage system. The NHHD, developed at 1:24,000 scale, is an extract from the high-resolution National Hydrography Dataset (NHD) housed at the US Geological Survey.The NHHD Shapefile Extract contains the NHDFlowline, NHDWaterbody and NHDArea feature classes from the original NHHD geodatabase. These shapefiles cover the extent of the sixteen cataloging units that intersect the State of NH, and contain reach codes for networked features, stream order, flow direction, names, and centerline representations for areal water bodies. Reaches are also defined on waterbodies and the approximate shorelines of the the Atlantic Ocean. However, because this data is no longer contained in the original geodatabase, the networking capabilities of the NHDFlowline has been lost.

The QUADS coverage contains 1:24,0000 neatlines for the USGS 7.5-minute quadrangle series. It was digitally generated to provide a reference template for mapping, digitizing, and archiving other GRANIT data layers.

The database contains predicted sea level rise extent layers and baseline layers for the open coast of New Hampshire, the Piscataqua River, and Great Bay based on 2019/2020 LiDAR elevation data.Data comprise the following eleven scenarios: p_MHHW_1_foot_slr: Mean higher high water + 1' sea level rise p_MHHW_2_foot_slr: Mean higher high water + 2' sea level rise p_MHHW_4_foot_slr: Mean higher high water + 4' sea level rise p_MHHW_6_foot_slr: Mean higher high water + 6' sea level rise p_MHHW_8_foot_slr: Mean higher high water + 8' sea level rise p_MHHW_baseline: baseline elevations from which the MHHW sea level rise layers were derived p_MHHW_FLOOD_2_foot_slr: Mean higher high water + one percent annual chance flood + 2' sea level rise p_MHHW_FLOOD_4_foot_slr: Mean higher high water + one percent annual chance flood + 4' sea level rise p_MHHW_FLOOD_6_foot_slr: Mean higher high water + one percent annual chance flood + 6' sea level risep_MHHW_FLOOD_8_foot_slr: Mean higher high water + one percent annual chance flood + 8' sea level rise p_MHHW_FLOOD_baseline: baseline elevations from which the MHHW_FLOOD sea level rise layers were derived The four data layers that incorporate the 100-year flood are based on the April 2014 preliminary Digital Flood Insurance Rate Maps (DFIRMs) for Rockingham and Strafford Counties.

The New Hampshire State Boundary (nh) layer provides a digital representation of the New Hampshire state boundary.It was derived from the 1:24,000-scale USGS Digital Line Graphs (DLGs).

Point locations of access sites to public water bodies in New Hampshire. Data set was developed to support statewide recreation planning activities in New Hampshire.

The TIGER/Line shapefiles and related database files (.dbf) are an extract of selected geographic and cartographic information from the U.S. Census Bureau's Master Address File / Topologically Integrated Geographic Encoding and Referencing (MAF/TIGER) Database (MTDB). The MTDB represents a seamless national file with no overlaps or gaps between parts, however, each TIGER/Line shapefile is designed to stand alone as an independent data set, or they can be combined to cover the entire nation. The TIGER/Line shapefiles include both incorporated places (legal entities) and census designated places or CDPs (statistical entities). An incorporated place is established to provide governmental functions for a concentration of people as opposed to a minor civil division (MCD), which generally is created to provide services or administer an area without regard, necessarily, to population. Places always nest within a state, but may extend across county and county subdivision boundaries. An incorporated place usually is a city, town, village, or borough, but can have other legal descriptions. CDPs are delineated for the decennial census as the statistical counterparts of incorporated places. CDPs are delineated to provide data for settled concentrations of population that are identifiable by name, but are not legally incorporated under the laws of the state in which they are located. The boundaries for CDPs often are defined in partnership with state, local, and/or tribal officials and usually coincide with visible features or the boundary of an adjacent incorporated place or another legal entity. CDP boundaries often change from one decennial census to the next with changes in the settlement pattern and development; a CDP with the same name as in an earlier census does not necessarily have the same boundary. The only population/housing size requirement for CDPs is that they must contain some housing and population. The boundaries of most incorporated places in this shapefile are as of January 1, 2021, as reported through the Census Bureau's Boundary and Annexation Survey (BAS). The boundaries of all CDPs were delineated as part of the Census Bureau's Participant Statistical Areas Program (PSAP) for the 2020 Census.

This map provides access to vector data layers that incorporate Landsat reflectance data and LiDAR elevation data within the state of New Hampshire. These data were developed by NH GRANIT using data collected between 2011 and 2018. The polygon boundaries represent "image objects" that were derived using eCognition image segmentation software, grouping image pixels into contiguous segments based on spectral reflectance and LiDAR. The attributes for each polygon were then calculated from the LiDAR crown height layer. Attributes include maximum, minimum, and mean elevation above the ground and standard deviation within each polygon. Elevation is in meters. The boundary of each layer is determined by the extent of a LiDAR data collection; Landsat reflectance data were clipped to the extent of the LiDAR. The dates of data collection are listed in the metadata for each data layer.These data were developed by NH GRANIT using funding from the New Hampshire Space Grant Consortium.

These data provide an accurate high-resolution shoreline compiled from imagery of Portsmouth, NH . This vector shoreline data is based on an office interpretation of imagery that may be suitable as a geographic information system (GIS) data layer. This metadata describes information for both the line and point shapefiles. The NGS attribution scheme 'Coastal Cartographic Object Attribute Sourc...

This data layer contains areas representing recreation sites (parks, playing fields, water recreation, etc.) for New Hampshire. A companion data set, "OEP Recreation Inventory: Points", is also available containing point locations of New Hampshire recreation sites.

The Digital Bedrock Geologic-GIS Map of the Saint-Gaudens National Historical Park and Vicinity, New Hampshire is composed of GIS data layers and GIS tables, and is available in the following GRI-supported GIS data formats: 1.) a 10.1 file geodatabase (saga_bedrock_geology.gdb), a 2.) Open Geospatial Consortium (OGC) geopackage, and 3.) 2.2 KMZ/KML file for use in Google Earth, however, this format version of the map is limited in data layers presented and in access to GRI ancillary table information. The file geodatabase format is supported with a 1.) ArcGIS Pro map file (.mapx) file (saga_bedrock_geology.mapx) and individual Pro layer (.lyrx) files (for each GIS data layer), as well as with a 2.) 10.1 ArcMap (.mxd) map document (saga_bedrock_geology.mxd) and individual 10.1 layer (.lyr) files (for each GIS data layer). The OGC geopackage is supported with a QGIS project (.qgz) file. Upon request, the GIS data is also available in ESRI 10.1 shapefile format. Contact Stephanie O'Meara (see contact information below) to acquire the GIS data in these GIS data formats. In addition to the GIS data and supporting GIS files, three additional files comprise a GRI digital geologic-GIS dataset or map: 1.) this file (saga_geology_gis_readme.pdf), 2.) the GRI ancillary map information document (.pdf) file (saga_bedrock_geology.pdf) which contains geologic unit descriptions, as well as other ancillary map information and graphics from the source map(s) used by the GRI in the production of the GRI digital geologic-GIS data for the park, and 3.) a user-friendly FAQ PDF version of the metadata (saga_bedrock_geology_metadata_faq.pdf). Please read the saga_geology_gis_readme.pdf for information pertaining to the proper extraction of the GIS data and other map files. Google Earth software is available for free at: https://www.google.com/earth/versions/. QGIS software is available for free at: https://www.qgis.org/en/site/. Users are encouraged to only use the Google Earth data for basic visualization, and to use the GIS data for any type of data analysis or investigation. The data were completed as a component of the Geologic Resources Inventory (GRI) program, a National Park Service (NPS) Inventory and Monitoring (I&M) Division funded program that is administered by the NPS Geologic Resources Division (GRD). For a complete listing of GRI products visit the GRI publications webpage: For a complete listing of GRI products visit the GRI publications webpage: https://www.nps.gov/subjects/geology/geologic-resources-inventory-products.htm. For more information about the Geologic Resources Inventory Program visit the GRI webpage: https://www.nps.gov/subjects/geology/gri,htm. At the bottom of that webpage is a "Contact Us" link if you need additional information. You may also directly contact the program coordinator, Jason Kenworthy (jason_kenworthy@nps.gov). Source geologic maps and data used to complete this GRI digital dataset were provided by the following: U.S. Geological Survey. Detailed information concerning the sources used and their contribution the GRI product are listed in the Source Citation section(s) of this metadata record (saga_bedrock_geology_metadata.txt or saga_bedrock_geology_metadata_faq.pdf). Users of this data are cautioned about the locational accuracy of features within this dataset. Based on the source map scale of 1:24,000 and United States National Map Accuracy Standards features are within (horizontally) 12.2 meters or 40 feet of their actual location as presented by this dataset. Users of this data should thus not assume the location of features is exactly where they are portrayed in Google Earth, ArcGIS, QGIS or other software used to display this dataset. All GIS and ancillary tables were produced as per the NPS GRI Geology-GIS Geodatabase Data Model v. 2.3. (available at: https://www.nps.gov/articles/gri-geodatabase-model.htm).

The New Hampshire Political Boundaries (pbnh) layer provides a digital representation of corporate boundaries at the town level. It was derived from the 1:24,000-scale USGS Digital Line Graphs (DLGs).

These data were automated to provide an accurate high-resolution historical shoreline of Hampton Harbor, New Hampshire suitable as a geographic information system (GIS) data layer. These data are derived from shoreline maps that were produced by the NOAA National Ocean Service including its predecessor agencies which were based on an office interpretation of imagery and/or field survey. The...

The Digital Bedrock Geologic-GIS Map of the Hartland and North Hartland 7.5' Quadrangles, New Hampshire is composed of GIS data layers and GIS tables, and is available in the following GRI-supported GIS data formats: 1.) a 10.1 file geodatabase (hanh_bedrock_geology.gdb), and a 2.) Open Geospatial Consortium (OGC) geopackage. The file geodatabase format is supported with a 1.) ArcGIS Pro map file (.mapx) file (hanh_bedrock_geology.mapx) and individual Pro layer (.lyrx) files (for each GIS data layer), as well as with a 2.) 10.1 ArcMap (.mxd) map document (hanh_bedrock_geology.mxd) and individual 10.1 layer (.lyr) files (for each GIS data layer). Upon request, the GIS data is also available in ESRI 10.1 shapefile format. Contact Stephanie O'Meara (see contact information below) to acquire the GIS data in these GIS data formats. In addition to the GIS data and supporting GIS files, three additional files comprise a GRI digital geologic-GIS dataset or map: 1.) this file (saga_geology_gis_readme.pdf), 2.) the GRI ancillary map information document (.pdf) file (saga_bedrock_geology.pdf) which contains geologic unit descriptions, as well as other ancillary map information and graphics from the source map(s) used by the GRI in the production of the GRI digital geologic-GIS data for the park, and 3.) a user-friendly FAQ PDF version of the metadata (hanh_bedrock_geology_metadata_faq.pdf). Please read the saga_geology_gis_readme.pdf for information pertaining to the proper extraction of the GIS data and other map files. QGIS software is available for free at: https://www.qgis.org/en/site/. The data were completed as a component of the Geologic Resources Inventory (GRI) program, a National Park Service (NPS) Inventory and Monitoring (I&M) Division funded program that is administered by the NPS Geologic Resources Division (GRD). For a complete listing of GRI products visit the GRI publications webpage: For a complete listing of GRI products visit the GRI publications webpage: https://www.nps.gov/subjects/geology/geologic-resources-inventory-products.htm. For more information about the Geologic Resources Inventory Program visit the GRI webpage: https://www.nps.gov/subjects/geology/gri,htm. At the bottom of that webpage is a "Contact Us" link if you need additional information. You may also directly contact the program coordinator, Jason Kenworthy (jason_kenworthy@nps.gov). Source geologic maps and data used to complete this GRI digital dataset were provided by the following: U.S. Geological Survey. Detailed information concerning the sources used and their contribution the GRI product are listed in the Source Citation section(s) of this metadata record (hanh_bedrock_geology_metadata.txt or hanh_bedrock_geology_metadata_faq.pdf). Users of this data are cautioned about the locational accuracy of features within this dataset. Based on the source map scale of 1:24,000 and United States National Map Accuracy Standards features are within (horizontally) 12.2 meters or 40 feet of their actual location as presented by this dataset. Users of this data should thus not assume the location of features is exactly where they are portrayed in ArcGIS, QGIS or other software used to display this dataset. All GIS and ancillary tables were produced as per the NPS GRI Geology-GIS Geodatabase Data Model v. 2.3. (available at: https://www.nps.gov/articles/gri-geodatabase-model.htm).

Town Master Plans were used as the primary source document. Data were compiled and automated by 4 Regional Planning Commissions (North Country Council, Lakes Region Planning Commission, Strafford Regional Planning Commission, and Rockingham Planning Commission). Earth Systems Research Center combined the provided data into one continuous database. The attributes collected were not consistent between regions. As a result, there are many empty fields.

Statewide dataset containing the location of geodetic control points and their associated attributes. For attribute data dictionary, see the file Geodetic-CodeGuide.doc.

The New Hampshire Hydrography Dataset (NHHD) is a feature-based database that interconnects and uniquely identifies the stream segments or reaches that make up the state's surface water drainage system. The NHHD, developed at 1:24,000 scale, is an extract from the high-resolution National Hydrography Dataset (NHD) housed at the US Geological Survey.The NHHD Shapefile Extract contains the NHDFlowline, NHDWaterbody and NHDArea feature classes from the original NHHD geodatabase. These shapefiles cover the extent of the sixteen cataloging units that intersect the State of NH, and contain reach codes for networked features, stream order, flow direction, names, and centerline representations for areal water bodies. Reaches are also defined on waterbodies and the approximate shorelines of the the Atlantic Ocean. However, because this data is no longer contained in the original geodatabase, the networking capabilities of the NHDFlowline has been lost. This dataset contains data published by USGS in April 2019.

The New Hampshire Community Anchor Institutions (CAI) dataset includes data on broadband availability at almost 4,000 institutions in the state. Data was collected for 7 categories of institutions as defined by the National Telecommunications and Information Administration (NTIA), including schools (K-12), libraries, medical/health care facilities, public safety, university/college/other post-secondary, other community support institutions-government, and other community support institutions- nongovernmental. The data set includes the status of broadband availability at each entity, the type of technology delivering broadband service, and the speed of service (down/up). It was generated from information collected by the nine regional planning agencies in NH from the individual institutions, initially via phone and/or email, and subsequently via web-based inventories, and represents broadband availability as of September 30, 2014. Extracts of the data set have been produced for incorporation in various GRANIT online viewing tools. These extracts typically include only the name, address, and type of institution, and do not include the broadband availability information that is part of the full data set. Data collection and analyses was supported by the NTIA under the American Recovery and Reinvestment Act of 2009 (ARRA). See www.ntia.doc.gov/recovery/index.html for further information.

The New Hampshire Railroads dataset provides a digital representation of the railroad line features mapped on standard 7.5-minute USGS quadrangles.