New Hampshire Conservation/Public Lands

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Metadata:

Identification_Information:
Citation:
Citation_Information:
Originator: Earth Systems Research Center, University of New Hampshire
Publication_Date: 20240515
Title: New Hampshire Conservation/Public Lands
Edition: One
Geospatial_Data_Presentation_Form: Map, Table
Publication_Information:
Publication_Place: Durham, New Hampshire
Publisher: Earth Systems Research Center, University of New Hampshire
Other_Citation_Details: None
Online_Linkage: Larger_Work_Citation:
Citation_Information:
Originator: Earth Systems Research Center, University of New Hampshire
Publication_Date: 19860101
Title: NH GRANIT Database
Publication_Information:
Publication_Place: Durham, New Hampshire
Publisher: Earth Systems Research Center, University of New Hampshire
Online_Linkage: https://granit.unh.edu
Description:
Abstract:
The GRANIT Conservation/Public Lands data layer contains a digital record of parcels of land of two or more acres that are mostly undeveloped and are protected from future development. Smaller parcels that adjoin previously mapped parcels or represent unique features, such as a bog or state-owned boat ramp, may also be included in the data layer.
Purpose:
The conservation/public lands layer provides information on land ownership patterns in the state. The boundaries are approximate, and are not meant to represent legal descriptions of the parcels.
Supplemental_Information:
Data distribution tile: statewide
Each parcel may comprise one or more tracts and thus may be represented by one or more features (polygons) in the spatial database. Multiple tracts may occur as a result of multiple acquisitions over time, single acquisitions from multiple owners, and/or a parcel that is bisected by a road or other base feature.
The data are available both in personal geodatabase format (.mdb) and in shapefile format (.shp).
Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 19530101
Ending_Date: 20240515
Currentness_Reference: Publication Date
Status:
Progress: Complete
Maintenance_and_Update_Frequency: Annually
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: -72.590654
East_Bounding_Coordinate: -70.581047
North_Bounding_Coordinate: 45.268974
South_Bounding_Coordinate: 42.692927
Keywords:
Theme:
Theme_Keyword_Thesaurus: None
Theme_Keyword: Boundary
Theme_Keyword: Conservation
Theme_Keyword: Public Lands
Theme_Keyword: Protected
Theme_Keyword: Protected Lands
Theme_Keyword: Land Ownership
Theme_Keyword: Parcels
Place:
Place_Keyword_Thesaurus: None
Place_Keyword: United States
Place_Keyword: Northeast
Place_Keyword: New England
Place_Keyword: New Hampshire
Access_Constraints: None
Use_Constraints: Not for legal use
Point_of_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: Earth Systems Research Center
Contact_Person: GRANIT Database Manager
Contact_Position: GRANIT Database Manager
Contact_Address:
Address_Type: mailing and physical address
Address: Morse Hall, University of New Hampshire
City: Durham
State_or_Province: NH
Postal_Code: 03824
Country: US
Contact_Voice_Telephone: 603-862-1214
Contact_Facsimile_Telephone: 603-862-0188
Contact_Electronic_Mail_Address: granit@unh.edu
Hours_of_Service: 8:30AM-5PM, EST
Browse_Graphic:
Browse_Graphic_File_Name: Browse_Graphic_File_Description: gif image file
Browse_Graphic_File_Type: gif
Data_Set_Credit: GRANIT database
Native_Data_Set_Environment: Arc/Info personal geodatabase format
Data_Quality_Information:
Attribute_Accuracy:
Attribute_Accuracy_Report:
The primary attribute associated with each polygon is the Tract Identifier (TID), which is verified via visual examination. Additional attributes are processed through domain checks and internal consistency checks.
Logical_Consistency_Report: Polygon topology exists.
Completeness_Report: Data is complete for the tile.
Positional_Accuracy:
Horizontal_Positional_Accuracy:
Horizontal_Positional_Accuracy_Report: Data meet National Map Accuracy Standards at the stated scale.
Lineage:
Source_Information:
Source_Citation:
Citation_Information:
Originator: Varies
Publication_Date: Varies
Title: Surveys, town tax maps, DXF files
Geospatial_Data_Presentation_Form: map
Type_of_Source_Media: Paper, Digital
Source_Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 19530101
Ending_Date: 20240515
Source_Currentness_Reference: Ground Condition
Source_Citation_Abbreviation: PARCELSOURCE
Source_Contribution: Provides the source parcel boundaries for the data layer.
Source_Information:
Source_Citation:
Citation_Information:
Originator:
US Geological Survey or another mapping agency in cooperation with USGS
Publication_Date: 1953-1990, varies by topographic quadrangle
Title: Digital Line Graphs - 1:24,000/1:25,000
Edition: 1
Geospatial_Data_Presentation_Form: digital geospatial data
Publication_Information:
Publication_Place: Reston, VA
Publisher: US Geological Survey
Other_Citation_Details: None
Online_Linkage: http://earthexplorer.usgs.gov
Larger_Work_Citation:
Citation_Information:
Originator: US Geological Survey
Publication_Date: Unknown
Title: National Cartographic Database
Publication_Information:
Publication_Place: Reston, VA
Publisher: US Geological Survey
Online_Linkage: http://www.usgs.gov
Source_Scale_Denominator: 24000
Type_of_Source_Media: Digital
Source_Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 19530101
Ending_Date: 19900101
Source_Currentness_Reference: Publication Date
Source_Citation_Abbreviation: DLG-3
Source_Contribution:
The DLG files for town boundaries, hydrography, railroads, road, and pipelines, were used in the development of the base map for the data layer.
Source_Information:
Source_Citation:
Citation_Information:
Originator: NH Department of Transportation
Publication_Date: 20010607, or most current version available
Title: NH Department of Transportation Smart Maps, 1:24,000
Geospatial_Data_Presentation_Form: map
Publication_Information:
Publication_Place: Concord, NH
Publisher: NH Department of Transportation
Other_Citation_Details: None
Online_Linkage: http://www.state.nh.us/dot
Source_Scale_Denominator: 24000
Type_of_Source_Media: Digital
Source_Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 19530101
Ending_Date: 20010607
Source_Currentness_Reference: Publication Date
Source_Citation_Abbreviation: DOTROADS
Source_Contribution:
The DOT road centerline data were used in the development of the base map for the data layer.
Process_Step:
Process_Description:
The development of this data layer was initiated in the early 1990's as a collaboration between the Society for the Protection of NH Forests (SPNHF), the NH Office of Strategic Initiatives (OSI), and the Earth Systems Research Center at the University of New Hampshire (ESRC). While the methodologies used to develop the data set have evolved over a period of years, the basic approach has remained relatively constant throughout this period.
As of 2001/2002, the entities responsible for the development of the data set include: OSI (collection, compilation, and automation of state/federal lands), the regional planning agencies (collection, compilation, and automation of municipally-managed parcels), SPNHF (collection and compilation of Forest Society Lands), and ESRC (collection, compilation, and automation of all other protected lands, and integration of all contributions into a seamless, statewide data set).
The process starts with the collection of source information (PARCELSOURCE) from agencies protecting/managing parcels in the state. Protecting agencies typically include state/federal organizations, county/municipal agencies, land trusts, watershed associations, and other non-profit organizations. The protecting entity is asked to provide the best available source map, and the associated descriptive information, to the organization responsible for parcel compilation (SPNHF, OSI, an RPA, and/or ESRC).
The organization recompiling the tract/parcel information must typically re-scale the source maps to achieve the target compilation scale of 1:24,000. This is accomplished via traditional copying machines with variable reduction capabilities. (For data that is digitally transmitted (e.g. DXF/DWG files), this step is omitted.) Once the source parcel is scaled appropriately, the parcel boundaries are recompiled onto 7.5-minute quad-based mylars. Prior to the late 1990's, these mylars displayed DLG-3 source data and any existing parcels in the data base. More recently, the DOTROADS data have replaced the DLG-3 roads.
During recompilation, tract/parcel boundaries that are coincident with any base features are flagged appropriately. Color codes are used to indicate whether the intended coincidence is with a base map road, surface water feature, town boundary, etc.
When new parcels are mapped that share boundaries with existing tracts/parcels, the compiler must select the best boundary to utilize. In these instances, attribute data (e.g. SOURCE, ACCURACY, etc.) associated with the existing and the new parcel are reviewed, and a determination is made.
The recompiled boundaries are then digitized, using standard GRANIT automation tolerances. This automation may take place at several locations (as noted above). During the digitizing phase, all flagged, coincident boundaries are replaced with the appropriate base feature from the GRANIT database. This ensures consistency of the resulting tracts/parcels with the GRANIT base layers. Boundary arcs and polygons are then coded. If the automation is handled by OSI or a regional planning agency, the new parcels are submitted to GRANIT for final review and incorporation in the statewide layer.
Checkplots are generated as each quad is updated, to ensure the accuracy of the linework digitizing and arc/polygon coding. Attributes are entered and verified through visual checks and by processing against valid domains. Note that certain attributes have been added since the original template was defined. As a result, not all fields will be populated for all records.
As part of the June, 2017 update, a large number of boundary updates were made to the White Mountain National Forest (WMNF) utilizing data provided by The Nature Conservancy. In addition to edits made to the WMNF itself, the updates yielded many changes to the boundaries of adjacent parcels.
In Spring, 2019, NH GRANIT partnered with UNH Cooperative Extension to capture property ownership information. A new field (OWNERTYPE) was added to the database to report on the type of land ownership (e.g. state, federal, private, etc.), similar to the PPAGENTYPE field which speaks to type of protection. The primary source used to obtain ownership information was the NH parcel mosaic dataset (NH Department of Revenue Administration, February, 2019). If ownership information could not be obtained using the parcel mosaic, ownership codes were assigned if sufficient protection coding existed to make an informed decision. If still no determination could be made, the communities in which these lands were located were contacted to clarify ownership status.
Further information on the derivation of the data set and the standards utilized may be obtained from the GRANIT database manager at ESRC.
Source_Used_Citation_Abbreviation: PARCELSOURCE, DLG-3, DOTROADS
Process_Date: 20240515
Process_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Organization: Earth Systems Research Center
Contact_Person: GRANIT Database Manager
Contact_Position: GRANIT Database Manager
Contact_Address:
Address_Type: mailing and physical address
Address: Morse Hall, University of New Hampshire
City: Durham
State_or_Province: NH
Postal_Code: 03824
Country: US
Contact_Voice_Telephone: 603-862-1214
Contact_Facsimile_Telephone: 603-862-0188
Contact_Electronic_Mail_Address: granit@unh.edu
Hours_of_Service: 9AM-5PM, EST
Spatial_Data_Organization_Information:
Direct_Spatial_Reference_Method: Vector
Point_and_Vector_Object_Information:
SDTS_Terms_Description:
SDTS_Point_and_Vector_Object_Type: GT-polygon composed of chains
Point_and_Vector_Object_Count: 13075
Spatial_Reference_Information:
Horizontal_Coordinate_System_Definition:
Planar:
Grid_Coordinate_System:
Grid_Coordinate_System_Name: State Plane Coordinate System 1983
State_Plane_Coordinate_System:
SPCS_Zone_Identifier: New Hampshire
Transverse_Mercator:
Scale_Factor_at_Central_Meridian: 0.999967
Longitude_of_Central_Meridian: -71.666667
Latitude_of_Projection_Origin: 42.500000
False_Easting: 984250.000000
False_Northing: 0.000000
Planar_Coordinate_Information:
Planar_Coordinate_Encoding_Method: Coordinate pair
Coordinate_Representation:
Abscissa_Resolution: 0.000208
Ordinate_Resolution: 0.000208
Planar_Distance_Units: Survey Feet
Geodetic_Model:
Horizontal_Datum_Name: North American Datum of 1983
Ellipsoid_Name: GRS 80
Semi-major_Axis: 6378137.000000
Denominator_of_Flattening_Ratio: 298.257222
Entity_and_Attribute_Information:
Overview_Description:
Entity_and_Attribute_Detail_Citation: None
Entity_and_Attribute_Overview:
Attributes for this data set are provided in 'ConservationLandsStandard.pdf'. In addition, please also see 'AttributeCodes.xls' for a listing of codes for fields with defined domains (PPTYPE, PPTERMTYPE, SPTYPE1, SPTYPE2, PPAGENCY, PPAGENTYPE, SPAGENCY1, SPAGENCY2, PROGRAM, LEVEL, MSTATUS, ACCURACY, ACCESS, and OWNERTYPE).
Distribution_Information:
Distributor:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: Earth Systems Research Center
Contact_Person: GRANIT Database Manager
Contact_Position: GRANIT Database Manager
Contact_Address:
Address_Type: mailing and physical address
Address: Morse Hall, University of New Hampshire
City: Durham
State_or_Province: NH
Postal_Code: 03824
Country: US
Contact_Voice_Telephone: 603-862-1214
Contact_Facsimile_Telephone: 603-862-0188
Contact_Electronic_Mail_Address: granit@unh.edu
Hours_of_Service: 9AM-5PM, EST
Resource_Description: CONS - New Hampshire Conservation/Public Lands
Distribution_Liability:
Digital data in NH GRANIT represent the efforts of the contributing agencies to record information from the cited source materials. Earth Systems Research Center, under contract to the NH Office of Strategic Initiatives, and in consultation with cooperating agencies, maintains a continuing program to identify and correct errors in these data. OSI, ESRC, and the cooperating agencies make no claim as to the validity or reliability or to any implied uses of these data.
Standard_Order_Process:
Digital_Form:
Digital_Transfer_Information:
Format_Name: .mdb (personal geodatabase), and .shp (ESRI shapefile)
Transfer_Size: 21.7 Mb (.mdb) and 22.0 Mb (.shp)
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name: https://granit.unh.edu
Fees:
No charge when downloaded from the internet. Cost of reproduction for provision on CD/ROM or other media.
Ordering_Instructions:
Mail or fax a copy of the GRANIT "Data Request Form" from the GRANIT Data Catalog. Delivery Time: Two weeks
Technical_Prerequisites: Ability to read/import geodatabases and/or shapefiles.
Metadata_Reference_Information:
Metadata_Date: 20010214
Metadata_Review_Date: 20240515
Metadata_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: Earth Systems Research Center
Contact_Person: GRANIT Database Manager
Contact_Position: GRANIT Database Manager
Contact_Address:
Address_Type: Mailing and physical address
Address: Morse Hall, University of New Hampshire
City: Durham
State_or_Province: NH
Postal_Code: 03824
Country: US
Contact_Voice_Telephone: 603-862-1214
Contact_Facsimile_Telephone: 603-862-0188
Contact_Electronic_Mail_Address: granit@unh.edu
Hours_of_Service: 9AM-5PM, EST
Metadata_Standard_Name: FGDC CSDGM
Metadata_Standard_Version: FGDC-STD-001-1998

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