BASEMAPPING.bmlake

SDE Feature Class

Tags
Planimetric Data, Hydrology / Dams / Lakes / Reservoirs / Rivers / Shoreline, land use or land cover, emergency management, miscellaneous, planimetric, economic development, environment, wetlands, infrastructure or ground transportation, tourism or recreation., \ Aerial Photography \ Hydrology \ Lakes \ Rivers \ Dams \ Reservoirs


Summary

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.

Description

This dataset covers the geographic area of Westchester County, New York.  Dataset contains planimetric base map data  for lakes and ponds greater than one half acre in size, streams and rivers that are greater than 10' in width and reservoir water bodies. 

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.

Credits

Westchester County/Sanborn

Use limitations

Extent

Scale Range

ArcGIS Metadata 

Citation 

*Title BASEMAPPING.bmlake


Presentation formats* digital map


Resource Details 

Dataset languages* English


Spatial representation type* vector


Credits
Westchester County/Sanborn


Extents 

Resource Constraints 

Constraints
Limitations of use

Spatial Reference 

Reference system identifier
*


Spatial Data Properties 

Vector
*Level of topology for this dataset  geometry only


Geometric objects
Feature class name BASEMAPPING.bmlake
*Object type  complex
*Object count 4240



ArcGIS Feature Class Properties
Feature class name BASEMAPPING.bmlake
*Feature type Simple
*Geometry type Polygon
Feature description hydrology features
*Has topology FALSE
*Feature count 4240
*Spatial index TRUE
*Linear referencing FALSE



Distribution 

Distributor
Available format
*Name SDE Feature Class


Fields 

Details for object BASEMAPPING.bmlake 
*Type Feature Class
*Row count 4240


Field OBJECTID
 
*Alias OBJECTID
*Data type OID
*Width 4
*Precision 10
*Scale 0
*Field description
Internal feature number.

*Description source
ESRI

*Description of values
Sequential unique whole numbers that are automatically generated.





Field HYDROPLY_C
 
*Alias HYDROPLY_C
*Data type Integer
*Width 4
*Precision 10
*Scale 0
Field description
Hydro Polygon Codes

List of values
Value 2600
Description 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.


Value 2620
Description 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.


Value 2680
Description Reservoir - Reservoirs were either classified by the County and/or distinguished by a large dam structure in place.




Field NAME
 
*Alias NAME
*Data type String
*Width 40
*Precision 0
*Scale 0
Field description
Proper name of feature, identical to annotation, and derived from the NYSDEC map.



Field PHOTODATE
 
*Alias PHOTODATE
*Data type String
*Width 15
*Precision 0
*Scale 0
Field description
Feature creation year

List of values
Value 2000
Description Feature created based on 2000 aerial photography


Value 2004
Description Feature created based on 2004 aerial photography




Field BASEMAPPING.bmlake.AREA
 
*Alias AREA
*Data type Double
*Width 8
*Precision 38
*Scale 8




Field BASEMAPPING.bmlake.LEN
 
*Alias LEN
*Data type Double
*Width 8
*Precision 38
*Scale 8




Field SHAPE
 
*Alias Shape
*Data type Geometry
*Width 4
*Precision 0
*Scale 0
*Field description
Feature geometry.

*Description source
ESRI

*Description of values
Coordinates defining the features.





Field SHAPE.AREA
 
*Alias SHAPE.AREA
*Data type Double
*Width 0
*Precision 0
*Scale 0




Field SHAPE.LEN
 
*Alias SHAPE.LEN
*Data type Double
*Width 0
*Precision 0
*Scale 0






Metadata Details 

*Metadata language English
*Metadata character set  utf8 - 8 bit UCS Transfer Format


Scope of the data described by the metadata* dataset
Scope name* dataset


*Last update 2008-11-06


ArcGIS metadata properties
Metadata format ArcGIS 1.0


Created in ArcGIS for the item 2011-10-19 11:46:24
Last modified in ArcGIS for the item 2008-11-06 12:15:38


Automatic updates
Have been performed Yes
Last update 2008-11-06 12:15:38


Identification 

Citation
Citation Information
OriginatorWestchester County/Sanborn Map Company
Publication Date2005-01-05
Title
Westchester County Lakes (2004 Base Map Project)
EditionGeospatial_Data_Presentation_Form: Planimetric
Geospatial Data Presentation Formvector digital data
Publication Information
Publication PlaceWhite Plains, NY
PublisherWestchester County
Online Linkagehttp://giswww.westchestergov.com/download/bmlake.zip
Online Linkagehttp://giswww.westchestergov.com/gismap
Online Linkagehttp://giswww.westchestergov.com/

Description
Abstract
This dataset covers the geographic area of Westchester County, New York.  Dataset contains planimetric base map data  for lakes and ponds greater than one half acre in size, streams and rivers that are greater than 10' in width and reservoir water bodies. 

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 DateApril 2004
Currentness Reference
ground condition
Status
ProgressComplete
Maintenance and Update FrequencyAs needed

Spatial Domain
Bounding Coordinates
West Bounding Coordinate-74.000207
East Bounding Coordinate-73.989290
North Bounding Coordinate41.039550
South Bounding Coordinate41.034013

Keywords
Theme
Theme KeywordPlanimetric Data, Hydrology / Dams / Lakes / Reservoirs / Rivers / Shoreline

Theme
Theme Keyword ThesaurusWestchester County GIS
Theme Keywordland use or land cover, emergency management, miscellaneous, planimetric, economic development, environment, wetlands, infrastructure or ground transportation, tourism or recreation.

Theme
Theme Keyword Thesaurusmetatools
Theme Keyword\ Aerial Photography \ Hydrology \ Lakes \ Rivers \ Dams \ Reservoirs

Place
Place KeywordWestchester County, New York

Place
Place Keyword Thesaurusmetatools
Place KeywordNorth America \ United States \ New York

Stratum
Stratum KeywordWestchester County GIS

Temporal
Temporal KeywordApril 2004

Point of Contact
Contact Information
Contact Person Primary
Contact PersonDeborah Parker
Contact OrganizationWestchester County GIS
Contact PositionGIS Specialist
Contact Address
Address Typemailing and physical address
Address148 Martine Avenue Room 305
CityWhite Plains
State or ProvinceNY
Postal Code10601
CountryUNITED STATES

Contact Voice Telephone(914) 995-3888
Contact Facsimile Telephone(914) 813-4116
Contact Electronic Mail Addressdape@westchestergov.com
Hours of Service8-4 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

Data Quality 

Positional Accuracy
Horizontal Positional Accuracy
Horizontal Positional Accuracy Report
Accurate
Lineage
Source Information
Source Citation
Citation Information
OriginatorContractor\
Publication Date
Geospatial Data Presentation FormSource 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 DenominatorOther
Source Time Period of Content
Time Period Information
Range of Dates/Times
Beginning DateApril 16, 2004
Ending DateApril 18, 2004
Process Step
Process Date2004-11-10


Process Contact
Contact Information
Contact Person Primary
Contact PersonKrysia Sapeta

Spatial Data Organization 

Direct Spatial Reference MethodVector


Point and Vector Object Information
SDTS Terms Description
SDTS Point and Vector Object TypePolygon
Point and Vector Object Count4240

Spatial Reference 

Horizontal Coordinate System Definition
Planar
Map Projection
Map Projection NameTransverse Mercator
Transverse Mercator
Scale Factor at Central Meridian0.999900
Longitude of Central Meridian-74.500000
Latitude of Projection Origin38.833333
False Easting492125.000000
False Northing0.000000

Planar Coordinate Information
Planar Coordinate Encoding Methodrow and column
Coordinate Representation
Abscissa Resolution0.5000000
Ordinate Resolution0.500000
Planar Distance Unitssurvey feet

Geodetic Model
Horizontal Datum NameNorth American Datum of 1983
Ellipsoid NameGeodetic Reference System 80
Semi-major Axis6378137.000000
Denominator of Flattening Ratio298.257222

Vertical Coordinate System Definition
Altitude System Definition
Altitude Resolution1.000000
Altitude Encoding MethodExplicit elevation coordinate included with horizontal coordinates

Entities and Attributes 

Detailed Description
Entity Type
Entity Type LabelBASEMAPPING.bmlake

Attribute
Attribute LabelOBJECTID
Attribute Definition
Internal feature number.
Attribute Definition SourceESRI
Attribute Domain Values
Unrepresentable Domain
Sequential unique whole numbers that are automatically generated.

Attribute
Attribute LabelHYDROPLY_C
Attribute Definition
Hydro Polygon Codes
Attribute Domain Values
Enumerated Domain
Enumerated Domain Value2600
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 Value2620
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 Value2680
Enumerated Domain Value Definition
Reservoir - Reservoirs were either classified by the County and/or distinguished by a large dam structure in place.

Attribute
Attribute LabelNAME
Attribute Definition
Proper name of feature, identical to annotation, and derived from the NYSDEC map.

Attribute
Attribute LabelPHOTODATE
Attribute Definition
Feature creation year
Attribute Domain Values
Enumerated Domain
Enumerated Domain Value2000
Enumerated Domain Value Definition
Feature created based on 2000 aerial photography
Enumerated Domain
Enumerated Domain Value2004
Enumerated Domain Value Definition
Feature created based on 2004 aerial photography

Attribute
Attribute LabelBASEMAPPING.bmlake.AREA

Attribute
Attribute LabelBASEMAPPING.bmlake.LEN

Attribute
Attribute LabelSHAPE
Attribute Definition
Feature geometry.
Attribute Definition SourceESRI
Attribute Domain Values
Unrepresentable Domain
Coordinates defining the features.

Attribute
Attribute LabelSHAPE.AREA

Attribute
Attribute LabelSHAPE.LEN

Distribution Information 

Distributor
Contact Information
Contact Organization Primary
Contact OrganizationWestchester County, NY
Contact Voice Telephone(914)995.3888
Contact Facsimile Telephone(914)813.4116
Contact Electronic Mail Addressdape@westchestergov.com

Resource DescriptionDownloadable Data
Distribution Liability
None
Standard Order Process
Digital Form
Digital Transfer Information
Transfer Size17.213

Metadata Reference 

Metadata Date2007-02-06
Metadata Contact
Contact Information
Contact Person Primary
Contact PersonDeborah Parker
Contact OrganizationWestchester County
Contact PositionGIS Specialist
Contact Address
Address Typemailing and physical address
Address148 Martine Avenue Room 305
CityWhite Plains
State or ProvinceNY
Postal Code10601
CountryUNITED STATES

Contact Voice Telephone(914) 995-3888
Contact Facsimile Telephone(914) 813-4116
Contact Electronic Mail Addressdape@westchestergov.com
Hours of Service8-4 EST/EDT M-F
Contact Instructions
email preferred

Metadata Standard NameFGDC Content Standards for Digital Geospatial Metadata
Metadata Standard VersionFGDC-STD-001-1998
Metadata Time Conventionlocal time


Metadata Extensions
Online Linkagehttp://www.esri.com/metadata/esriprof80.html
Profile NameESRI Metadata Profile