Topographic Contours (2ft), Town of Newfield, 2008

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Identification_Information

Citation:
Citation_Information:
Originator: Tompkins County ITS GIS Division
Publication_Date: 2011
Title: Topographic Contours (2ft), Town of Newfield, 2008
Geospatial_Data_Presentation_Form: vector digital data
Online_Linkage: https://cugir.library.cornell.edu/catalog/cugir-008150
Description:
Abstract: Topographic contours at intervals of 2 feet, covering the Town of Newfield in Tompkins County, New York. These elevation contours were derived from May 2008 LiDAR data, with points using the NAVD88 vertical datum later converted to feet.
Purpose: This data was originally collected for the purpose of providing support for FEMA's Floodplain Map Modernization Program.
Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 200805
Currentness_Reference: ground condition
Status:
Progress: Complete
Maintenance_and_Update_Frequency: None planned
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: -76.691303
East_Bounding_Coordinate: -76.534324
North_Bounding_Coordinate: 42.395638
South_Bounding_Coordinate: 42.281656
Keywords:
Theme:
Theme_Keyword_Thesaurus: none
Theme_Keyword: contour lines
Theme:
Theme_Keyword_Thesaurus: ISO 19115 Topic Category
Theme_Keyword: elevation
Theme:
Theme_Keyword_Thesaurus: CUGIR Category
Theme_Keyword: elevation
Place:
Place_Keyword_Thesaurus: LCSH
Place_Keyword: Tompkins County (N.Y.)
Place_Keyword: Newfield (N.Y. : Town)
Access_Constraints: None
Use_Constraints: None
Point_of_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: Tompkins County ITS GIS Division
Contact_Person: Cattyann Campbell
Contact_Position: GIS Project Leader
Contact_Address:
Address_Type: mailing and physical address
Address: 128 East Buffalo Street
City: Ithaca
State_or_Province: New York
Postal_Code: 14850
Country: USA
Contact_Voice_Telephone: (607) 274-5418
Contact_Facsimile_Telephone: (607) 274-5420
Contact_Electronic_Mail_Address: gis@tompkins-co.org
Hours_of_Service: M-F 8:30 a.m. to 4:30 p.m.
Browse_Graphic:
Browse_Graphic_File_Name: https://cugir-data.s3.amazonaws.com/00/81/50/preview.png
Browse_Graphic_File_Description: preview of the dataset
Browse_Graphic_File_Type: PNG

Data_Quality_Information

Logical_Consistency_Report: Unknown
Completeness_Report: The shapefile covers all areas within a 500-foot buffer around the Town of Newfield.
Positional_Accuracy:
Horizontal_Positional_Accuracy:
Horizontal_Positional_Accuracy_Report: The original LiDAR data horizontal accuracy is in compliance with the National Standard for Spatial Data Accuracy (NSSDA) RMSE estimation of elevation data in support of 2ft. contour mapping products as it is referenced in the FEMA guidelines for flood hazard mapping, appendix A.
Quantitative_Horizontal_Positional_Accuracy_Assessment:
Horizontal_Positional_Accuracy_Value: 1.000 m RMSE
Horizontal_Positional_Accuracy_Explanation: Horizontal error associated with this LiDAR data set is a function of several variables including acquisition parameters and practices, system calibration, GPS reference station coordinates, and GPS/INS post processing.
Vertical_Positional_Accuracy:
Vertical_Positional_Accuracy_Report: The original LiDAR data vertical accuracy is in compliance with the National Standard for Spatial Data Accuracy (NSSDA) RMSE estimation of elevation data in support of 2ft. contour mapping products as it is referenced in the FEMA guidelines for flood hazard mapping, appendix A. The Institute of Applied Geospatial Technology performed a ground control analysis of the Tompkins County LiDAR data using ground control checkpoints in several land cover classes and found the resultant RMSE in the exposed ground class to be within the contract specifications of 0.185 meters.
Quantitative_Vertical_Positional_Accuracy_Assessment:
Vertical_Positional_Accuracy_Value: 0.185 m RMSE
Vertical_Positional_Accuracy_Explanation: Vertical error associated with this LiDAR data set is a function of several variables including acquisition parameters and practices, system calibration, GPS reference station coordinates, and GPS/INS post processing.
Lineage:
Process_Step:
Process_Description: Topographic contour lines from county-wide ESRI file geodatabase were converted to a shapefile, then simplified (generalized) using a tolerance of 0.5 feet, then clipped to the Town's 500-foot buffer. Extraneous columns were removed from the attribute table.
Process_Date: 20111207
Process_Step:
Process_Description: CUGIR staff added z values from "Contour" field, making it easier to use the data in 3D programs.
Process_Date: 20190618

Spatial_Data_Organization_Information

Direct_Spatial_Reference_Method: Vector
Point_and_Vector_Object_Information:
SDTS_Terms_Description:
SDTS_Point_and_Vector_Object_Type: 3D LineString
Point_and_Vector_Object_Count: 6748

Spatial_Reference_Information

Horizontal_Coordinate_System_Definition:
Planar:
Map_Projection:
Map_Projection_Name: NAD 1983 StatePlane New York Central FIPS 3102 Feet
Transverse_Mercator:
Scale_Factor_at_Central_Meridian: 0.9999375
Longitude_of_Central_Meridian: -76.58333333333333
Latitude_of_Projection_Origin: 40.0
False_Easting: 820208.3333333333
False_Northing: 0.0
Planar_Coordinate_Information:
Planar_Coordinate_Encoding_Method: coordinate pair
Coordinate_Representation:
Abscissa_Resolution: 0.0000000072859718258655464
Ordinate_Resolution: 0.0000000072859718258655464
Planar_Distance_Units: Foot_US
Geodetic_Model:
Horizontal_Datum_Name: North American Datum of 1983
Ellipsoid_Name: GRS 1980
Semi-major_Axis: 6378137.0
Denominator_of_Flattening_Ratio: 298.257222101

Entity_and_Attribute_Information

Entity_Type:
Entity_Type_Label: Newfield2ftContours
Entity_Type_Definition: Topographic contours
Entity_Type_Definition_Source:
Attributes:
Name Description Values
Contour elevation 434 to 2098 feet
Type contour type (can be used for display purposes) coded values

Distribution_Information

Distributor:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: Albert R. Mann Library
Contact_Address:
Address_Type: mailing and physical
Address: Cornell University
City: Ithaca
State_or_Province: New York
Postal_Code: 14853
Contact_Voice_Telephone: 607-255-5406
Contact_Electronic_Mail_Address: mann-ref@cornell.edu
Distribution_Liability: Cornell University provides these geographic data "as is". Cornell University makes no guarantee or warranty concerning the accuracy of information contained in the geographic data. Cornell University further makes no warranty either expressed or implied, regarding the condition of the product or its fitness for any particular purpose. The burden for determining fitness for use lies entirely with the user. Although these files have been processed successfully on computers at Cornell University, no warranty is made by Cornell University regarding the use of these data on any other system, nor does the fact of distribution constitute or imply any such warranty.
Standard_Order_Process:
Digital_Form:
Digital_Transfer_Information:
Format_Name: Shapefile
Format_Information_Content: zipped shapefile
File_Decompression_Technique: zip
Transfer_Size: 42.89
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Digital_Form:
Digital_Transfer_Information:
Format_Name: metadata
Format_Information_Content: FGDC XML metadata
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Digital_Form:
Digital_Transfer_Information:
Format_Name: HTML metadata
Format_Information_Content: FGDC HTML metadata
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Digital_Form:
Digital_Transfer_Information:
Format_Name: KML
Format_Information_Content: generated KML, via WFS
Digital_Transfer_Option:
Online_Option:
Digital_Form:
Digital_Transfer_Information:
Format_Name: GeoJSON
Format_Information_Content: generated GeoJSON, via WFS
Digital_Transfer_Option:
Online_Option:
Digital_Form:
Digital_Transfer_Information:
Format_Name: OGC:WMS
Format_Information_Content: WMS, from GeoServer
Digital_Transfer_Option:
Online_Option:
Fees: None

Metadata_Reference_Information

Metadata_Date: 20190618
Metadata_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: Albert R. Mann Library
Contact_Address:
Address_Type: mailing and physical
Address: Albert R. Mann Library
City: Ithaca
State_or_Province: New York
Postal_Code: 14853
Country: USA
Contact_Voice_Telephone: 607-255-5406
Contact_Electronic_Mail_Address: mann-ref@cornell.edu
Metadata_Standard_Name: FGDC Content Standard for Digital Geospatial Metadata
Metadata_Standard_Version: FGDC-STD-001-1998
Metadata_Time_Convention: local time