Two-foot Elevation Contours

Metadata:

• Identification_Information
• Data_Quality_Information
• Spatial_Data_Organization_Information
• Spatial_Reference_Information
• Entity_and_Attribute_Information
• Distribution_Information
• Metadata_Reference_Information

Identification_Information:

Citation:

Citation_Information:

Originator:

The dataset was developed through a contract with Buchart-Horn (York, Pennsylvania)

Publication_Date: Unpublished Material

Title: Two-foot Elevation Contours

Geospatial_Data_Presentation_Form: vector digital data

Online_Linkage: \\Srvr128\2004Basemapping\Topo_2ft

Description:

Abstract:

This data set contains contour lines modeled at a 2' interval covering all of Westchester County, NY. The dataset was developed specifically for Westchester County. Vertical Datum is NAVD88.

Purpose:

The 2' Contours are intended to be used for planning & preliminary engineering applications. They are also designed as a data layer for cartographic map production and for increased image feature interpretation at 1"=100' viewing scale. They are not intended to be used in actual engineering design work and should not replace a field survey.

Time_Period_of_Content:

Time_Period_Information:

Single_Date/Time:

Calendar_Date: April 2004

Currentness_Reference: ground condition

Status:

Progress: Complete

Maintenance_and_Update_Frequency: Unknown

Spatial_Domain:

Bounding_Coordinates:

West_Bounding_Coordinate: -73.99

East_Bounding_Coordinate: -73.48

North_Bounding_Coordinate: 41.38

South_Bounding_Coordinate: 40.87

Keywords:

Access_Constraints:

Westchester County provides this information as a service to the general public and will not customize the information for any specific purpose. The County’s GIS agency banner must appear on all printed or digital products (such as WORD documents, PDF files, PPT presentations, etc.) that display these data.

Use_Constraints:

The County of Westchester makes no warranty, express or implied, concerning the completeness or accuracy of the data and assumes no liability whatsoever for any product or analysis derived from or based on the data. The data are for information only, may not be current, and are not suitable for site-specific decision making. The County strongly cautions users against relying on the data for design purposes, nor should the data in any case be regarded as a substitute for a survey. Any use(s) to which this information is to be put shall be the sole responsibility of the user.

Point_of_Contact:

Contact_Information:

Contact_Person_Primary:

Contact_Person: Sam Wear

Contact_Organization: Westchester County

Contact_Position: Asst. Chief Information Officer (GIS)

Contact_Address:

Address_Type: mailing and physical address

Address: 148 Martine Ave Rm 305

City: White Plains

State_or_Province: New York

Postal_Code: 10601

Country: United States

Contact_Voice_Telephone: (914) 995-3047

Contact_Electronic_Mail_Address: stw1@westchestergov.com

Security_Information:

Security_Classification: Unclassified

Native_Data_Set_Environment:

Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 2; ESRI ArcCatalog 9.0.0.535

Data_Quality_Information:

Attribute_Accuracy:

Attribute_Accuracy_Report:

The quality control process conducted by Applied Geographics (Boston, MA) confirmed the accuracy of the attributes.

Logical_Consistency_Report:

The dataset has been checked for topological and logical consistency. The data is free of crossing contours and other topological issues that would cause the data to be inaccurate or potentially un-usable for some applications.

Completeness_Report: The dataset is complete.

Positional_Accuracy:

Horizontal_Positional_Accuracy:

Horizontal_Positional_Accuracy_Report:

All photogrammetric mapping products are to meet or exceed National Map Accuracy Standards. This standard states that 90 percent of all photographic details on the orthophotography shall be accurate to within at least 1/30 in. of true position, as determined by test surveys, and none of the photographic details shall be displaced by more than 1/15 in. from true coordinate position. For this project, 1/30 of an inch at publication scale equates to +/-3.33' for the 1"=100' maps.

Quantitative_Horizontal_Positional_Accuracy_Assessment:

Horizontal_Positional_Accuracy_Value: +/- 3.33' (90% Confidence Level)

Horizontal_Positional_Accuracy_Explanation: Horizontal Error

Vertical_Positional_Accuracy:

Vertical_Positional_Accuracy_Report:

All photogrammetric mapping products are to meet or exceed National Map Accuracy Standards. This standard states that contours should be accurate to within 1/2 of the Contour Interval. For this data set, that represents a 1.0' computation.

Quantitative_Vertical_Positional_Accuracy_Assessment:

Vertical_Positional_Accuracy_Value: +/- 1.0'

Vertical_Positional_Accuracy_Explanation: Vertical Accuracy

Lineage:

Source_Information:

Source_Time_Period_of_Content:

Time_Period_Information:

Single_Date/Time:

Calendar_Date: April 2004

Source_Currentness_Reference: ground condition

Source_Contribution:

The source information used in the collection of this dataset was part of the New York State Digital Orthoimagery Program.

Process_Step:

Process_Description:

1. Scanned photography and Aerial Triangulation Solution received from Westchester County. 2. Mass points and breaklines were stereoscopically extracted to develop a Digital Terrain Model with sufficient density and accuracy to support the 2' contour modeling. 3. Contours were modeled using InRoads for MicroStation at a 2' interval 4. Contours were coded per the County's data dictionary. 5. Contour label annotations were placed. 6. Contours were translated from MicroStation to ArcInfo Coverage Format 7. Contours were cleaned and validated 8. Data provided to County and their independant QA/QC consultant 9. QA/QC consultant returned errors (if any) to prodution company 10. Errors corrected and re-delivery to County

Process_Date: 2006

Process_Contact:

Contact_Information:

Contact_Person_Primary:

Contact_Person: Brian Mayfield, C.P., GISP, P.L.S.

Contact_Organization: Pinnacle Mapping Technologies, Inc.

Contact_Position: Vice President

Contact_Address:

Address_Type: mailing and physical address

Address: 8021 Knue Road, Suite 113

City: Indianapolis

State_or_Province: Indiana

Postal_Code: 46250

Country: United States

Contact_Voice_Telephone: (317) 585-2011

Contact_Facsimile_Telephone: (317) 585-2014

Contact_Electronic_Mail_Address: bmayfield@pinnaclemapping.com

Hours_of_Service: M-F 8:00 am - 5:00 pm Eastern Time

Process_Step:

Process_Description: Dataset copied.

Source_Used_Citation_Abbreviation: S:\Base_Mapping\2004Update\Topo\Metadata\2ft_topo

Cloud_Cover: 0%

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: 40176

SDTS_Terms_Description:

SDTS_Point_and_Vector_Object_Type: Point

Point_and_Vector_Object_Count: 4

SDTS_Terms_Description:

SDTS_Point_and_Vector_Object_Type: Label point

Point_and_Vector_Object_Count: 1638

Spatial_Reference_Information:

Horizontal_Coordinate_System_Definition:

Planar:

Map_Projection:

Map_Projection_Name: Transverse Mercator

Transverse_Mercator:

Scale_Factor_at_Central_Meridian: 0.999900

Longitude_of_Central_Meridian: -74.500000

Latitude_of_Projection_Origin: 38.833333

False_Easting: 492125.000000

False_Northing: 0.000000

Planar_Coordinate_Information:

Planar_Coordinate_Encoding_Method: coordinate pair

Coordinate_Representation:

Abscissa_Resolution: 0.000105

Ordinate_Resolution: 0.000105

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

Vertical_Coordinate_System_Definition:

Altitude_System_Definition:

Altitude_Datum_Name: North American Vertical Datum of 1988

Altitude_Distance_Units: feet

Entity_and_Attribute_Information:

Detailed_Description:

Entity_Type:

Entity_Type_Label: topo_2ft_1.aat

Attribute:

Attribute_Label: FID

Attribute_Definition: Internal feature number.

Attribute_Definition_Source: ESRI

Attribute_Domain_Values:

Unrepresentable_Domain:

Sequential unique whole numbers that are automatically generated.

Attribute:

Attribute_Label: Shape

Attribute_Definition: Feature geometry.

Attribute_Definition_Source: ESRI

Attribute_Domain_Values:

Unrepresentable_Domain: Coordinates defining the features.

Attribute:

Attribute_Label: FNODE#

Attribute_Definition: Internal node number for the beginning of an arc (from-node).

Attribute_Definition_Source: ESRI

Attribute_Domain_Values:

Unrepresentable_Domain: Whole numbers that are automatically generated.

Attribute:

Attribute_Label: TNODE#

Attribute_Definition: Internal node number for the end of an arc (to-node).

Attribute_Definition_Source: ESRI

Attribute_Domain_Values:

Unrepresentable_Domain: Whole numbers that are automatically generated.

Attribute:

Attribute_Label: LPOLY#

Attribute_Definition: Internal node number for the left polygon.

Attribute_Definition_Source: ESRI

Attribute_Domain_Values:

Unrepresentable_Domain: Whole numbers that are automatically generated.

Attribute:

Attribute_Label: RPOLY#

Attribute_Definition: Internal node number for the right polygon.

Attribute_Definition_Source: ESRI

Attribute_Domain_Values:

Unrepresentable_Domain: Whole numbers that are automatically generated.

Attribute:

Attribute_Label: LENGTH

Attribute_Definition: Length of feature in internal units.

Attribute_Definition_Source: ESRI

Attribute_Domain_Values:

Unrepresentable_Domain: Positive real numbers that are automatically generated.

Attribute:

Attribute_Label: TOPO_2FT_1#

Attribute_Definition: Internal feature number.

Attribute_Definition_Source: ESRI

Attribute_Domain_Values:

Unrepresentable_Domain:

Sequential unique whole numbers that are automatically generated.

Attribute:

Attribute_Label: TOPO_2FT_1-ID

Attribute_Definition: User-defined feature number.

Attribute_Definition_Source: ESRI

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: 3100

Enumerated_Domain_Value_Definition: Index Contours

Enumerated_Domain:

Enumerated_Domain_Value: 3110

Enumerated_Domain_Value_Definition: Index Depression Contours

Enumerated_Domain:

Enumerated_Domain_Value: 3120

Enumerated_Domain_Value_Definition: Obscured Index Contours

Enumerated_Domain:

Enumerated_Domain_Value: 3130

Enumerated_Domain_Value_Definition: Obscured Index Depression Contours

Enumerated_Domain:

Enumerated_Domain_Value: 3140

Enumerated_Domain_Value_Definition: Hidden Index Contours

Enumerated_Domain:

Enumerated_Domain_Value: 3150

Enumerated_Domain_Value_Definition: Intermediate Contours

Enumerated_Domain:

Enumerated_Domain_Value: 3160

Enumerated_Domain_Value_Definition: Intermediate Depression Contours

Enumerated_Domain:

Enumerated_Domain_Value: 3170

Enumerated_Domain_Value_Definition: Obscurred Intermediate Contours

Enumerated_Domain:

Enumerated_Domain_Value: 3180

Enumerated_Domain_Value_Definition: Obscurred Intermediate Depression Contours

Enumerated_Domain:

Enumerated_Domain_Value: 3190

Enumerated_Domain_Value_Definition: Hidden Intermediate Contours

Attribute:

Attribute_Label: TOPO_2FT_CODE

Attribute_Definition: Numerical Code Assigned in Data Production

Attribute_Definition_Source: Photo Interpretation

Attribute:

Attribute_Label: ELEV

Attribute_Definition: Numerical Value containing Elevation of Line

Attribute_Definition_Source: Photogrammetrically Derived

Attribute:

Attribute_Label: PHOTODATE

Attribute_Definition: Date of Photography

Attribute_Definition_Source: Assigned in Data Production

Detailed_Description:

Entity_Type:

Entity_Type_Label: topo_2ft_1.tatcl

Attribute:

Attribute_Label: FID

Attribute_Definition: Internal feature number.

Attribute_Definition_Source: ESRI

Attribute_Domain_Values:

Unrepresentable_Domain:

Sequential unique whole numbers that are automatically generated.

Attribute:

Attribute_Label: Shape

Attribute_Definition: Feature geometry.

Attribute_Definition_Source: ESRI

Attribute_Domain_Values:

Unrepresentable_Domain: Coordinates defining the features.

Attribute:

Attribute_Label: CL#

Attribute_Definition: Internal feature number.

Attribute_Definition_Source: ESRI

Attribute_Domain_Values:

Unrepresentable_Domain:

Sequential unique whole numbers that are automatically generated.

Attribute:

Attribute_Label: CL-ID

Attribute_Definition: User-defined feature number.

Attribute_Definition_Source: ESRI

Attribute:

Attribute_Label: X

Attribute:

Attribute_Label: Y

Attribute:

Attribute_Label: OFFSETX

Attribute:

Attribute_Label: OFFSETY

Attribute:

Attribute_Label: HEIGHT

Attribute:

Attribute_Label: SYMBOL

Attribute:

Attribute_Label: LEVEL

Attribute:

Attribute_Label: TEXT

Attribute:

Attribute_Label: ANNO1#

Distribution_Information:

Distributor:

Contact_Information:

Contact_Person_Primary:

Contact_Person: Sam Wear

Contact_Organization: Westchester County

Contact_Position: Asst. Chief Information Officer (GIS)

Contact_Address:

Address_Type: mailing and physical address

Address: 148 Martine Ave Rm 305

City: White Plains

State_or_Province: New York

Postal_Code: 10601

Country: United States

Contact_Voice_Telephone: (914) 995-3047

Contact_Electronic_Mail_Address: stw1@westchestergov.com

Resource_Description: This data is available through Westchester County, New York.

Standard_Order_Process:

Digital_Form:

Digital_Transfer_Information:

Transfer_Size: 108.242

Metadata_Reference_Information:

Metadata_Date: 20060901

Metadata_Contact:

Contact_Information:

Contact_Person_Primary:

Contact_Person: Brian Mayfield, C.P., GISP, P.L.S.

Contact_Organization: Pinnacle Mapping Technologies, Inc.

Contact_Position: Vice President

Contact_Address:

Address_Type: mailing and physical address

Address: 8021 Knue Road, Suite 113

City: Indianapolis

State_or_Province: Indiana

Postal_Code: 46250

Country: United States

Contact_Voice_Telephone: (317) 585-2011

Contact_Facsimile_Telephone: (317) 585-2014

Contact_Electronic_Mail_Address: bmayfield@pinnaclemapping.com

Hours_of_Service: M-F 8:00 am - 5:00 pm Eastern Time

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