IDENTIFICATION_INFORMATION Citation: Citation_Information: Originator: Earth Systems Research Center, University of New Hampshire Publication_Date: 20170712 Title: Land Use 2015 - Southeastern New Hampshire Edition: One Geospatial_Data_Presentation_Form: vector digital data 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: Description: Abstract: This data set contains detailed land use data (polygons) for 45 communities in southeastern New Hampshire. The primary source used to map the land use was high resolution (1-foot), true color aerial photography, collected in the spring of 2015. Data development was completed by Rockingham Planning Commission (27 communities) and Strafford Regional Planning Commission (18 communities), with GRANIT providing technical support, metadata development, and standardizing/merging of the datasets into a regional product. Purpose: These photo-interpreted land use data are intended for use by state, regional, and municipal resource managers, planning agencies, and other stakeholders. Supplemental_Information: Data distribution tile: full 45-town coverage area Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 2015 Currentness_Reference: source photography date Status: Progress: Complete Maintenance_and_Update_Frequency: Irregular Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -71.45251 East_Bounding_Coordinate: -70.69919 North_Bounding_Coordinate: 43.57577 South_Bounding_Coordinate: 42.73424 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: Carroll County Place_Keyword: Rockingham County Place_Keyword: Strafford County Place_Keyword: Atkinson Place_Keyword: Barrington Place_Keyword: Brentwood Place_Keyword: Brookfield Place_Keyword: Danville Place_Keyword: Dover Place_Keyword: Durham Place_Keyword: East Kingston Place_Keyword: Epping Place_Keyword: Exeter Place_Keyword: Farmington Place_Keyword: Fremont Place_Keyword: Greenland Place_Keyword: Hampstead Place_Keyword: Hampton Place_Keyword: Hampton Falls Place_Keyword: Kensington Place_Keyword: Kingston Place_Keyword: Lee Place_Keyword: Madbury Place_Keyword: Middleton Place_Keyword: Milton Place_Keyword: New Castle Place_Keyword: New Durham Place_Keyword: Newfields Place_Keyword: Newington Place_Keyword: Newmarket Place_Keyword: Newton Place_Keyword: North Hampton Place_Keyword: Northwood Place_Keyword: Nottingham Place_Keyword: Plaistow Place_Keyword: Portsmouth Place_Keyword: Raymond Place_Keyword: Rochester Place_Keyword: Rollinsford Place_Keyword: Rye Place_Keyword: Salem Place_Keyword: Sandown Place_Keyword: Seabrook Place_Keyword: Somersworth Place_Keyword: South Hampton Place_Keyword: Strafford Place_Keyword: Stratham Place_Keyword: Wakefield Access_Constraints: None Use_Constraints: Not for legal use. Point_of_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: 603-862-1792 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, Earth Systems Research Center, University of New Hampshire Native_Data_Set_Environment: ESRI ArcGIS 10x DATA_QUALITY_INFORMATION Attribute_Accuracy: Attribute_Accuracy_Report: Data were digitized on-screen by photo-interpreting the 1-foot resolution aerial photography. Attribute coding was checked by on-screen overlay of the delineated land use polygons, displayed using transparent symbology, on the source photography. This scrutiny detected any missing or erroneously labeled polygons. Data capture occurred at a scale of no less than 1:2,400. Evaluation occurred at a scale of 1:5,000. 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: The complete 45-town area was mapped and classified. Positional_Accuracy: Horizontal_Positional_Accuracy: Horizontal_Positional_Accuracy_Report: Data were generated primarily from interpretation of the 1-ft. resolution photos. However, variable scale vector data sets, as well as computer scripts, were used as guides to digitize certain land use polygons (see Process Steps). Lineage: Source_Information: Source_Citation: Citation_Information: Originator: Quantum Spatial Publication_Date: 2016 Title: 2015 Orthophotography Type_of_Source_Media: online Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 2015 Source_Currentness_Reference: source photography date Source_Citation_Abbreviation: ORTHO2015 Source_Contribution: Provided the basic source photography for the delineation and interpretation of the land use features. Source_Citation: Citation_Information: Originator: Earth Systems Research Center, University of New Hampshire Publication_Date: 2011 Title: 2010 Land Use Type_of_Source_Media: online Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 2010 Source_Currentness_Reference: source photography date Source_Citation_Abbreviation: LU2010 Source_Contribution: Provided the initial land use delineations that were updated to 2015. Process_Step: Process_Description: A set of data standards was developed to govern key technical components of the land use mapping, including definitions of the land use classes and identification of feature automation protocols. The land use classification codes were based on a hybrid of the USGS Anderson land-use and land-cover classification system (Levels I and II), (http://landcover.usgs.gov/classes.html), as modified to satisfy the modeling component of a previously-funded CICEET project. Note also that the residential mapping protocols, described further below, were developed jointly with staff from the Rockingham Planning Commission, Exeter, NH, and were reviewed/approved by staff from the Strafford Regional Planning Commission, Dover, NH. Process_Date: 2008 Source_Produced_Citation_Abbreviation: LUSTANDARDS.doc Process_Step: Process_Description: Land use features were digitized by displaying the 2010 and use data over the 2015 orthophography, and "heads-up" interpretation of features that appeared to change over the 5-year period. Features were generally digitized to the visible extent of their edge as interpreted by the analyst. The mapping of the residential class was subject to additional delineation "rules". As with other classes, features were digitized to visible use boundaries when possible. In these cases, yard edges/natural features guided the delineation. However, where boundaries (or partial boundaries) were indistinct, one of several approaches was utilized: 1a) For indistinct boundaries of houses within 250' of one another and within public water/sewer zones (based on TOWN_SW): a .5-acre circle centered on the edge of the structure furthest from the associated road was used as a guide for the polygon delineation. 1b) For indistinct boundaries of houses within 250' of one another and outside of public water/sewer zones (based on TOWN_SW): the 1a) protocol was applied using a 1-acre circle. 2a) For indistinct boundaries of houses greater than 250' apart and within public water/sewer zones (based on TOWN_SW): a .5-acre box was generated, centered on the structure (or centered in the approximate midpoint of multiple structures on what appeared to be a single parcel). If the structure(s) was within 700' of a road, the box was oriented parallel to the nearest road. In cases where the rotated box intersected the road edge, it was repositioned further away from the road to preserve as much of the box area as possible. Where the box intersected the road buffer, the road edge became the polygon edge. In these cases, the box became somewhat smaller than the original .5-acre. If the house was further than 700' from the road, or did not appear to be associated with a nearby road, the box was not rotated. 2b) For indistinct boundaries of houses greater than 250' apart and outside of public water/sewer zones (based on TOWN_SW): the 2a) protocol was applied using a 1-acre box. Note that forested areas that were completely enclosed within a developed polygon were assumed to "belong" to the developed polygon, and were generally not distinguished. Source_Used_Citation_Abbreviation: LU2010 Source_Used_Citation_Abbreviation: ORTHO2015 Source_Used_Citation_Abbreviation: LUSTANDARDS.doc Process_Date: 2017 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: 2017 Process_Step: Process_Description: The individual regional land use data sets (from Rockingham Planning Commission and Strafford Regional Planning Commission) were provided to GRANIT at UNH, where attributes where attributes were standardized and the data sets were merged. No additional QC or processing was performed on the composite data set. Process_Date: 2017 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: 61808 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 Overview_Description: Entity_and_Attribute_Overview: The dataset includes 7 attributes, as follows: 1. LU4 - 4-digit integer describing the land use feature. See LUSTANDARDS.doc for further information on the code values. 2. LU4_Desc - a text field containing the description of LU4 3. Developed - a 0/1 field to flag land use features that are considered developed. A value of 1 was applied to all land use codes in the general "Urban and Built-up Land" category (all LU4 codes between 1120 and 1800), as well as the features coded as "Other Agricultural Land" (LU4 code 2900). 4. Town - a text field containing the town name 5. FIPS - 4-digit Federal Information Processing System code for the town 6. RPA - with value of 8 (Rockingham Planning Commission) or 9 (Strafford Regional Planning Commission) 7. Acres - the size of the land use feature as calculated by the software. Entity_and_Attribute_Detail_Citation: None DISTRIBUTION_INFORMATION Distributor: Contact_Information: Contact_Organization_Primary: Contact_Organization: Earth 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. Earth Systems Research Center, under contract to the NH Office of Energy and Planning, and in consultation with cooperating agencies, maintains a continuing program to identify and correct errors in these data. OEP, 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: ESRI shapefile Transfer_Size: 90 MB 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.unh.edu). Turnaround: Two weeks. Technical_Prerequisites: None. Metadata_Reference_Information: Metadata_Date: 20170712 Metadata_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: Earth 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