GRANIT Home GRANIT Header





GIS Event Calendar
March
12
3456789
10111213141516
1718192021
22
23
24252627282930
31



Rockingham County Land Use - 1998

Rockingham County Land Use - 1998

Metadata also available as - [Parseable text] - [SGML] - [XML]

Metadata:


Identification_Information:
Citation:
Citation_Information:
Originator: Complex Systems Research Center, University of New Hampshire
Publication_Date: 20030930
Title: Rockingham County Land Use - 1998
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:
<URL:http://www.granit.sr.unh.edu/cgi-bin/nhsearch?dset=lu98/lu98015>
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: <URL:http://www.granit.sr.unh.edu>
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 1998 United States Geological Survey (USGS) 1:12,000-scale, black & white, Digital Orthophoto Quadrangles (DOQs). Other sources used to develop the classification included road centerline data from the New Hampshire Department of Transportation (NHDOT) and USGS Digital Line Graphs (DLGs), surface water data from the Federal Emergency Management Agency Digital Flood Insurance Rate Maps (DFIRMs), wetlands data from the National Wetlands Inventory (NWI) of the United States Fish and Wildlife Service (FWS), and Landsat Thematic Mapper imagery.
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
Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 199804
Currentness_Reference: source photography date
Status:
Progress: Complete
Maintenance_and_Update_Frequency: Irregular
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:
<URL:http://www.granit.sr.unh.edu/cgi-bin/load_file?PATH=/data/database/d-webdata/lu98/lu98015/browse.gif>
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 1:12,000-scale DOQs of Rockingham County. Additionally, data from National Wetland Inventory (NWI) vector coverages were used to identify open wetlands in the DOQs, and Landsat Thematic Mapper (TM) data assisted in determining some wetlands and cleared features. 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 1:12,000.

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 USGS 1998 DOQs (1:12,000-scale, black-and-white, 1-meter resolution, aerial photographs). 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: US Geological Survey
Publication_Date: 1998
Title: 1998 Digital Orthophoto Quads (DOQs)
Source_Scale_Denominator: 12,000
Type_of_Source_Media: online
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 199804
Source_Currentness_Reference: source photography date
Source_Citation_Abbreviation: DOQs
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: 19920101
Title: New Hampshire Political Boundaries at 1:24,000 Scale
Source_Scale_Denominator: 24,000
Type_of_Source_Media: online
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: PBNH
Source_Contribution: Used to generate the boundary for the project study area.
Source_Information:
Source_Citation:
Citation_Information:
Originator: NH Department of Transportation
Publication_Date: 20020806
Title: NHDOT Public Road Centerlines
Source_Scale_Denominator: 24,000
Type_of_Source_Media: digital
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 20020806
Source_Currentness_Reference: ground condition
Source_Citation_Abbreviation: PUBLICRDS
Source_Contribution:
Used to generate the initial transportation class in the data set.
Source_Information:
Source_Citation:
Citation_Information:
Originator: NH Department of Transportation
Publication_Date: 20020806
Title: NHDOT Private Road Centerlines
Source_Scale_Denominator: 24,000
Type_of_Source_Media: digital
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 20020709
Source_Currentness_Reference: ground condition
Source_Citation_Abbreviation: PRIVATERDS
Source_Contribution:
Used to generate the initial transportation class in the data set.
Source_Information:
Source_Citation:
Citation_Information:
Originator: US Fish & Wildlife Service
Publication_Date: 1998
Title: National Wetlands Inventory
Source_Scale_Denominator: 24,000
Type_of_Source_Media: digital
Source_Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 1985
Ending_Date: 1986
Source_Currentness_Reference: source photography date
Source_Citation_Abbreviation: NWI
Source_Contribution: Used to assist in the delineation and coding of open wetlands.
Source_Information:
Source_Citation:
Citation_Information:
Originator: Complex Systems Research Center, University of New Hampshire
Publication_Date: 2001
Title: FEMA Surface Water
Source_Scale_Denominator: 12,000
Type_of_Source_Media: digital
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 199804
Source_Currentness_Reference: ground condition
Source_Citation_Abbreviation: FEMAWAT
Source_Contribution:
Surface water features, delineated from the 12,000-scale DOQs to support the generation of FEMA Digital Flood Insurance Rate Maps (DFIRMs), were used to represent surface water in this data set.
Source_Information:
Source_Citation:
Citation_Information:
Originator: USGS EROS Data Center/NASA
Publication_Date: 2000
Title: Landsat Thematic Mapper 7 ETM+ Imagery
Type_of_Source_Media: digital imagery
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 20000927
Source_Currentness_Reference: image date
Source_Citation_Abbreviation: TM
Source_Contribution:
Used to assist in the interpretation of open wetlands and idle features.
Source_Information:
Source_Citation:
Citation_Information:
Originator: NH Department of Environmental Services
Publication_Date: 200204
Title: Water Distribution Areas
Source_Scale_Denominator: 24,000
Type_of_Source_Media: digital
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 200204
Source_Currentness_Reference: ground condition
Source_Citation_Abbreviation: TOWN_SW
Source_Contribution:
Used to identify areas served by public water/sewer. This, in turn, impacted the delineation of residential features, as described below.
Process_Step:
Process_Description:
A set of data standards was developed to govern key technical components of the project, 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 the CICEET-funded project referenced in the project description.

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: 200210
Source_Produced_Citation_Abbreviation: LUSTANDARDS.doc
Process_Step:
Process_Description:
The county boundary for the project was created from both PBNH and the DOQs. The interior county boundary arcs were extracted directly from PBNH. The ocean shoreline boundary was delineated as the most easterly of the PBNH boundary and the shoreline visible in the 1998 DOQs with the following exception. The delineation of the shoreline in and around Hampton Harbor was based on the creation of an artificial closure line.
Source_Used_Citation_Abbreviation: DOQs
Source_Used_Citation_Abbreviation: PBNH
Process_Date: 200210
Process_Step:
Process_Description:
The NH DOT public centerline road data were evaluated on-screen relative to the 1998 DOQs. Road segments were moved/deleted/added, as necessary, to match the roads visible in the DOQs. Public roads, with the exception of System Class 66 (representing unmaintained town roads), were then buffered based on the pavement width attribute in the road inventory file to initiate the "roads/transportation" class. Roads that did not link to a pavement width attribute were buffered 12 ft., based on minimum road design standards for road width (10'/side) and shoulder width (2'/side) for roads supporting traffic loads of 50-250 ADT, from "Subdivision and Site Plan Review Handbook", Southwest Region Planning Commission, December, 2001.
Source_Used_Citation_Abbreviation: PUBLICRDS
Process_Date: 200212
Process_Step:
Process_Description:
The NH DOT private centerline road data were evaluated on-screen relative to the 1998 DOQs. Road segments were edited/deleted/added, as necessary, to match the roads visible in the DOQs. Private roads were then buffered 12 ft., based on minimum road design standards for road width (10'/side) and shoulder width (2'/side) for roads supporting traffic loads of 50-250 ADT, from "Subdivision and Site Plan Review Handbook", Southwest Region Planning Commission, December, 2001. The buffered features were merged with the buffered public roads, described above, to complete the preliminary roads/transportation class.
Source_Used_Citation_Abbreviation: PRIVATERDS
Process_Date: 200212
Process_Step:
Process_Description:
Railroad tracks were screen-digitized from the 1998 DOQs. These were then buffered by 12 ft. to generate the railroads/transportation class. The 12 ft. width was based on a visual assessment of the average railroad bed width in the county.
Source_Used_Citation_Abbreviation: DOQs
Process_Date: 200212
Process_Step:
Process_Description:
The NWI (open wetland classes only) and FEMAWAT data sets were merged with the study area boundary, the roads/transportation class, and the railroads/ transportation class, to generate the initial land use data set. Generally, the railroad buffer took precedence over other features where overlap occurred. However, in two instances the road buffer took precedence: 1) where there was an obvious road overpass; and 2) where the railroad and roadbed were approximately parallel to one another.
Source_Used_Citation_Abbreviation: NWI
Source_Used_Citation_Abbreviation: FEMAWAT
Process_Date: 200212
Process_Step:
Process_Description:
The remaining land use classes were digitized by "heads-up" interpretation of recognizable features in the 1998 DOQs, as defined in LUSTANDARDS.DOC. Features were generally digitized to the visible extent of their edge as interpreted by the analyst. During the digitizing process, the initial delineations of wetlands and surface water features were reviewed and refined, as appropriate. TM imagery was used to aid in the interpretation of some wetland and idle/other open features.

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: BASE
Source_Used_Citation_Abbreviation: SEWER/WATER
Process_Date: 200307
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: 200308


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: 62028
SDTS_Terms_Description:
SDTS_Point_and_Vector_Object_Type: Label point
Point_and_Vector_Object_Count: 27048
SDTS_Terms_Description:
SDTS_Point_and_Vector_Object_Type: GT-polygon composed of chains
Point_and_Vector_Object_Count: 27048
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: LU98015.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: LU98015#
Attribute_Definition: Internal feature number.
Attribute_Definition_Source: ESRI
Attribute_Domain_Values:
Unrepresentable_Domain: Sequential unique whole numbers that are generated.
Attribute:
Attribute_Label: LU98015-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: 54.5 Mb (ARCE)
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name: <URL:http://www.granit.sr.unh.edu>
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: 20030922
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

Generated by mp version 2.8.13 on Thu Dec 13 10:07:25 2007
CSRC EOS UNH Send Email to GRANIT Directions to Morse Hall Contact Bar