Westchester County Major Lakes (2004 Base Map Project)

Metadata:


Identification_Information:
Citation:
Citation_Information:
Originator: Westchester County/Sanborn Map Company
Publication_Date: 20050105
Title:
Westchester County Major Lakes (2004 Base Map Project)
Edition: Geospatial_Data_Presentation_Form: Planimetric
Geospatial_Data_Presentation_Form: vector digital data
Publication_Information:
Publication_Place: White Plains, NY
Publisher: Westchester County
Online_Linkage: http://giswww.westchestergov.com/download/bmmajlake.zip
Online_Linkage: http://giswww.westchestergov.com/gismap
Online_Linkage: http://giswww.westchestergov.com/
Description:
Abstract:
This dataset covers the geographic area of Westchester County, New York.  Dataset contains planimetric base map data for major lakes.  It is a derivative of bmlakes. 

The source for the imagery is aerial photography acquired in April 2004. The planimetric data was originally compiled from aerial imagery collected in the year 2000.  In 2004, new aerial imagery was acquired over the county of Westchester and all planimetric data was updated at that time.  This layer contains the polygons delineating hydrologic features. The data was photogrammetrically stereo-compiled to North American Datum 1983; New York State Plane East Zone. Image horizontal accuracy is +/-2.5 ft. at the 90% confidence level.
Purpose:
The aerial photography and creation of the subsequent planimetric data was executed to capture the existing ground conditions at a specific point in time for the purpose of GIS analysis.  A GIS is a system of computer software, hardware, and data that allows a user to manipulate, analyze, and present information that is tied to a spatial location. GIS technology is used in scientific investigations, resource management, development planning, and many other applications that require analysis of spatial data.  Planimetric base map data along with digital orthophotography typically provide an accurate base for digitally representing geographic features upon which the GIS is built.  
Westchester County Geographic Information Systems (GIS) develops, maintains and distributes digital data for Westchester County, New York. County GIS staff also supports GIS applications and programs in both county and local governments.
Supplemental_Information:
The aerial film was acquired in April 2004. The imagery was scanned at 14 microns using a Z/I Imaging PhotoScan 2000 scanner. The ground control used to support the planimetric base mapping was collected by either paneling of permanent monuments or photographic identification of strategic points. The coordinates were collected via ground survey techniques and the Aerial Triangulation was performed using Zeiss ISAT software. The final bundle adjustment was performed using PAT-B software. The planimetric data were updated from photogrammetrically compiled features produced for Westchester County in the year 2000.   All new stereo-model images were reviewed on first-order softcopy stereo plotters for changes to the planimetric features.
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: As needed
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: -74.000207
East_Bounding_Coordinate: -73.989290
North_Bounding_Coordinate: 41.039550
South_Bounding_Coordinate: 41.034013
Keywords:
Theme:
Theme_Keyword: Planimetric Data, Hydrology / Dams / Lakes / Reservoirs / Rivers / Shoreline
Theme:
Theme_Keyword_Thesaurus: Westchester County GIS
Theme_Keyword: land use or land cover, emergency management, miscellaneous, planimetric, economic development, environment, wetlands, infrastructure or ground transportation, tourism or recreation.
Theme:
Theme_Keyword_Thesaurus: metatools
Theme_Keyword: \ Aerial Photography \ Hydrology \ Lakes \ Rivers \ Dams \ Reservoirs
Place:
Place_Keyword: Westchester County, New York
Place:
Place_Keyword_Thesaurus: metatools
Place_Keyword: North America \ United States \ New York
Stratum:
Stratum_Keyword: Westchester County GIS
Temporal:
Temporal_Keyword: April 2004
Access_Constraints: None
Use_Constraints:
None
Point_of_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Deborah Parker
Contact_Organization: Westchester County GIS
Contact_Position: GIS Specialist
Contact_Address:
Address_Type: mailing and physical address
Address:
148 Martine Avenue Room 305
City: White Plains
State_or_Province: NY
Postal_Code: 10601
Country: USA
Contact_Voice_Telephone: (914) 995-3888
Contact_Facsimile_Telephone: (914) 813-4116
Contact_Electronic_Mail_Address: dape@westchestergov.com
Hours_of_Service: 8-4 EST/EDT M-F
Contact Instructions:
email preferred
Data_Set_Credit:
Westchester County/Sanborn
Native_Data_Set_Environment:
Microsoft Windows 2000 Version 5.0 (Build 2195) Service Pack 4; ESRI ArcCatalog 9.0.0.535
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Data_Quality_Information:
Positional_Accuracy:
Horizontal_Positional_Accuracy:
Horizontal_Positional_Accuracy_Report:
Accurate
Lineage:
Source_Information:
Source_Citation:
Citation_Information:
Originator: Contractor\
Publication_Date:
Geospatial_Data_Presentation_Form: Source Format:ARC/INFO Coverage \Capture Method:Digitised
Other_Citation_Details:
Projection:NAD_1983_HARN_StatePlane_New_York_East_FIPS_3101 \Datum:North_American_1983_HARN
Source_Scale_Denominator: Other
Source_Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: April 16, 2004
Ending_Date: April 18, 2004
Process_Step:
Process_Date: 20041110
Process_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Krysia Sapeta
Process_Step:
Process_Description:
Metadata imported.
Source_Used_Citation_Abbreviation:
D:\BaseMapping\2004\2004_bmlakes.xml
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Spatial_Data_Organization_Information:
Direct_Spatial_Reference_Method: Vector
Point_and_Vector_Object_Information:
SDTS_Terms_Description:
SDTS_Point_and_Vector_Object_Type: Polygon
Point_and_Vector_Object_Count: 4240
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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: row and column
Coordinate_Representation:
Abscissa_Resolution: 0.5000000
Ordinate_Resolution: 0.500000
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_Resolution: 1.000000
Altitude_Encoding_Method: Explicit elevation coordinate included with horizontal coordinates
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Entity_and_Attribute_Information:
Detailed_Description:
Entity_Type:
Entity_Type_Label: LLC4.BM2004_bmlake
Attribute:
Attribute_Label: SHAPE.AREA
Attribute:
Attribute_Label: SHAPE.LEN
Attribute:
Attribute_Label: NAME2
Attribute:
Attribute_Label: OBJECTID
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: HYDROPLY_C
Attribute_Definition:
Hydro Polygon Codes
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: 2600
Enumerated_Domain_Value_Definition:
Lake/Pond - Lakes & Ponds are represented by polygons. Ponds or pools less than one-half acre in size are not included.   Storm-Water Retention Ponds are included.
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: 2620
Enumerated_Domain_Value_Definition:
Rivers / Streams - A shoreline polygon is shown for all double line rivers & streams. Any flowing water greater than 10' in width was considered for this category.  Both banks of the stream were digitized and formed into a polygon.  Streams less than 10' wide were compiled as a single line, classified as a hydro centerline, and placed in the bmstream dataset.
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: 2680
Enumerated_Domain_Value_Definition:
Reservoir - Reservoirs were either classified by the County and/or distinguished by a large dam structure in place.
Attribute:
Attribute_Label: BASEMAPPING.bmmajlake.AREA
Attribute:
Attribute_Label: BASEMAPPING.bmmajlake.LEN
Attribute:
Attribute_Label: SHAPE
Attribute_Definition:
Feature geometry.
Attribute_Definition_Source:
ESRI
Attribute_Domain_Values:
Unrepresentable_Domain:
Coordinates defining the features.
Attribute:
Attribute_Label: NAME3
Attribute:
Attribute_Label: NAME3NOTES
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Distribution_Information:
Distributor:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: Westchester County, NY
Contact_Voice_Telephone: (914)995.3888
Contact_Facsimile_Telephone: (914)813.4116
Contact_Electronic_Mail_Address: dape@westchestergov.com
Resource_Description: Downloadable Data
Distribution_Liability:
None
Standard_Order_Process:
Digital_Form:
Digital_Transfer_Information:
Transfer_Size: 17.213
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Metadata_Reference_Information:
Metadata_Date: 20070206
Metadata_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Deborah Parker
Contact_Organization: Westchester County
Contact_Position: GIS Specialist
Contact_Address:
Address_Type: mailing and physical address
Address:
148 Martine Avenue Room 305
City: White Plains
State_or_Province: NY
Postal_Code: 10601
Country: USA
Contact_Voice_Telephone: (914) 995-3888
Contact_Facsimile_Telephone: (914) 813-4116
Contact_Electronic_Mail_Address: dape@westchestergov.com
Hours_of_Service: 8-4 EST/EDT M-F
Contact Instructions:
email preferred
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
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