Identification_Information: Citation: Citation_Information: Originator: Complex Systems Research Center, University of New Hampshire Publication_Date: 20031201 Title: Rockingham County Land Use - 1974 Edition: One Geospatial_Data_Presentation_Form: vector digital data Publication_Information: Publication_Place: Durham, New Hampshire Publisher: Complex Systems Research Center, University of New Hampshire Other_Citation_Details: None Online_Linkage: Larger_Work_Citation: Citation_Information: Originator: Complex Systems Research Center, University of New Hampshire Publication_Date: 19860101 Title: NH GRANIT Database Publication_Information: Publication_Place: Durham, New Hampshire Publisher: Complex Systems Research Center, University of New Hampshire Online_Linkage: Description: Abstract: This data set contains 13 categories of land use data (polygons) for Rockingham County, New Hampshire. The primary data used to derive the layer were 1974 1:20,000-scale, black & white, digital orthophotos and 1998 land use data (). Purpose: These photo-interpreted land use data are intended for use by state, regional, and municipal resource managers, planning agencies, and scientific researchers. The data are part of a larger effort, sponsored by the Cooperative Institute for Coastal and Estuarine Environmental Technology (CICEET) at the University of New Hampshire, to analyze past and current development trends and their impact on water quality, and to model future development pressures in the region and their likely water quality impacts. Supplemental_Information: Data distribution tile: county This data set was derived by modifying a 1998 land use data layer for Rockingham County. Standards governing the development of the 1998 data are available in LUSTANDARDS.doc. A countywide mosaic of the 74 orthophotography - 74DOM015 - is available from GRANIT (). A companion data file - PHOTOPNT74 - may also be downloaded from the web site (). This point layer documents the name, photo centerpoint, date of acquisition, and other pertinent information for each photo used to create the mosaic. Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 1974 Currentness_Reference: source photography date Status: Progress: Complete Maintenance_and_Update_Frequency: None planned Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -71.452018 East_Bounding_Coordinate: -70.698691 North_Bounding_Coordinate: 43.275762 South_Bounding_Coordinate: 42.734331 Keywords: Theme: Theme_Keyword_Thesaurus: None Theme_Keyword: Land use Theme_Keyword: Landuse Theme_Keyword: Land cover Theme_Keyword: Landcover Theme_Keyword: Photo interpretation Place: Place_Keyword_Thesaurus: None Place_Keyword: United States Place_Keyword: Northeast Place_Keyword: New England Place_Keyword: New Hampshire Place_Keyword: Rockingham County Access_Constraints: None Use_Constraints: Not for legal use. Point_of_Contact: Contact_Information: Contact_Person_Primary: Contact_Organization: Complex 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: 603-862-1792 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, Complex Systems Research Center, University of New Hampshire Native_Data_Set_Environment: ESRI ArcGIS 8.3 Data_Quality_Information: Attribute_Accuracy: Attribute_Accuracy_Report: Data were digitized on-screen by GRANIT staff by photo-interpreting 1:20,000-scale DOQs of Rockingham County. Attribute coding was checked by on-screen overlay of the delineated land use polygons, displayed using transparent symbology, on the base data (e.g. the DOQs). This scrutiny detected any missing or erroneously labeled polygons. Data evaluation occurred at a scale no less than the smallest source photo scale of 1:20,000. In addition, code domain checks ensured that only valid codes were assigned to features, and polygon "dissolve" operations identified any cases where adjacent polygons shared the same land use code. Logical_Consistency_Report: Polygon and arc-node topology exists. Topology checks were used to identify and eliminate any sliver polygons, dangling nodes, and/or other potential errors. Completeness_Report: All of Rockingham County was mapped and classified. Positional_Accuracy: Horizontal_Positional_Accuracy: Horizontal_Positional_Accuracy_Report: Data were generated primarily from photo interpretation of historic 1974 orthophotos (1:20,000-scale, black-and-white, 1-meter resolution, aerial photographs). Lineage: Source_Information: Source_Citation: Citation_Information: Originator: US Geological Survey Publication_Date: 1974 Title: 1974 Digital Orthophoto Quads (DOQs) Source_Scale_Denominator: 20,000 Type_of_Source_Media: online Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 1974 Source_Currentness_Reference: source photography date Source_Citation_Abbreviation: 74DOQ Source_Contribution: Provided the basic source photography for the delineation and interpretation of the land use features. Source_Information: Source_Citation: Citation_Information: Originator: Complex Systems Research Center, University of New Hampshire Publication_Date: 20030930 Title: Rockingham County Land Use - 1998 Source_Scale_Denominator: 12,000 Type_of_Source_Media: online Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 1998 Source_Currentness_Reference: source photography date Source_Citation_Abbreviation: 98LU Source_Contribution: Provided the initial land use data set. Process_Step: Process_Description: The 98LU was overlain on the 74DOQs, and updated to reflect the features visible in the imagery. Because there is significant tile overlap in the source photography, the sequence in which the photos are displayed impacts the visible features for any area on the ground. (A listing of the display order is provided in 74photoorder015.txt.) Using the documented photo sequence, on-screen digitizing/editing was performed to: - eliminate any land use features that were not present in 1974 - redelineate, as necessary, any features that had changed from the earlier date Source_Used_Citation_Abbreviation: 98LU Source_Used_Citation_Abbreviation: 74DOQ Process_Date: 20031201 Process_Step: Process_Description: The land use feature delineations were checked by visually checking the symbolized features displayed over the source DOQs. Modifications were made, as warranted, during the quality control process - to correct incorrectly classed lands, and to fix digitizing errors such as overshoots and sliver polygons. Process_Date: 20031201 Spatial_Data_Organization_Information: Direct_Spatial_Reference_Method: Vector Point_and_Vector_Object_Information: SDTS_Terms_Description: SDTS_Point_and_Vector_Object_Type: Complete chain Point_and_Vector_Object_Count: 56217 SDTS_Terms_Description: SDTS_Point_and_Vector_Object_Type: Label point Point_and_Vector_Object_Count: 23195 SDTS_Terms_Description: SDTS_Point_and_Vector_Object_Type: GT-polygon composed of chains Point_and_Vector_Object_Count: 23195 SDTS_Terms_Description: SDTS_Point_and_Vector_Object_Type: Point Point_and_Vector_Object_Count: 4 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: 2800 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: 0.000512 Ordinate_Resolution: 0.000512 Planar_Distance_Units: survey feet Geodetic_Model: Horizontal_Datum_Name: North American Datum of 1983 Ellipsoid_Name: Geodetic Reference System 80 Semi-major_Axis: 6378137.000000 Denominator_of_Flattening_Ratio: 298.257222 Entity_and_Attribute_Information: Detailed_Description: Entity_Type: Entity_Type_Label: LU74015.PAT Entity_Type_Definition: Polygon attribute table Entity_Type_Definition_Source: ESRI Attribute: Attribute_Label: AREA Attribute_Definition: Area of feature in internal units squared. Attribute_Definition_Source: ESRI Attribute_Domain_Values: Unrepresentable_Domain: Real numbers that are automatically generated. Attribute: Attribute_Label: PERIMETER Attribute_Definition: Perimeter of feature in internal units. Attribute_Definition_Source: ESRI Attribute_Domain_Values: Unrepresentable_Domain: Positive real numbers that are automatically generated. Attribute: Attribute_Label: LU74015# Attribute_Definition: Internal feature number. Attribute_Definition_Source: ESRI Attribute_Domain_Values: Unrepresentable_Domain: Sequential unique whole numbers that are generated. Attribute: Attribute_Label: LU74015-ID Attribute_Definition: User-defined feature number. Attribute_Definition_Source: ESRI Attribute_Domain_Values: Unrepresentable_Domain: User defined Overview_Description: Entity_and_Attribute_Overview: The coverage includes two user-defined attributes: 1. GRANITID - a 7-digit unique integer assigned sequentially to polygons in the data set. 2. LU - a 2-digit integer describing the land use feature, as follows: Residential (11) - Individual houses, subdivisions and "in-town" residential areas Industrial/commercial (12) - Urban areas dominated by business operations Mixed urban (13) - Urban areas where commercial enterprise occupies part of a building/block and residential use occurs in another, adjacent part of the building/block. Also, miscellaneous urban uses, e.g. schools, military installations, etc. Transportation/roads (14) - Paved roadways, travel lane width, airports, or other public transportation features Railroads (15) - Railroad beds Auxiliary transportation (16) - Highway medians, clover leafs, etc. Playing fields/recreational (17) - Golf courses, baseball diamonds, football fields, etc. Agriculture (20) - Includes hay fields, row crops, fruit orchards, etc. Farmsteads (24) - Any buildings associated with farms Forested (40) - Land where trees are the dominant cover Water (50) - Open surface water Open wetlands (60) - Wetlands where the dominant vegetation is less than 20' in height Idle/other open (70) - Cemeteries, gravel pits, quarries, old fields, etc. Entity_and_Attribute_Detail_Citation: None Distribution_Information: Distributor: Contact_Information: Contact_Organization_Primary: Contact_Organization: Complex Systems Research Center, University of New Hampshire 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: 603-862-1792 Contact_Facsimile_Telephone: 603-862-0188 Contact_Electronic_Mail_Address: granit@unh.edu Hours_of_Service: 8:30AM-5PM. EST Resource_Description: Downloadable Data Distribution_Liability: Digital data in NH GRANIT represent the efforts of the contributing agencies to record information from the cited source materials. Complex Systems Research Center, under contract to the NH Office of State Planning, and in consultation with cooperating agencies, maintains a continuing program to identify and correct errors in these data. OSP, CSRC, 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: ARCE (Arc/Info Export), ESRI shapefile Transfer_Size: 43.7 Mb (ARCE) Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: Fees: No charge when downloaded from the Internet. Cost of reproduction for provision on CD/ROM or other media. Ordering_Instructions: Email GRANIT (granit@unh.edu) or order from web site (www.granit.sr.unh.edu). Turnaround: Two weeks. Technical_Prerequisites: None. Metadata_Reference_Information: Metadata_Date: 20031201 Metadata_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: Complex Systems Research Center, University of New Hampshire 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 Contact_Voice_Telephone: 603-862-1792 Contact_Facsimile_Telephone: 603-862-0188 Contact_Electronic_Mail_Address: granit@unh.edu Hours_of_Service: 8:30AM-5PM, EST Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata Metadata_Standard_Version: FGDC-STD-001-1998 Metadata_Time_Convention: local time Metadata_Extensions: Online_Linkage: http://www.esri.com/metadata/esriprof80.html Profile_Name: ESRI Metadata Profile