View Metadata
Cambridge Hydrography Polygons
- Identification Information
- Data Quality Information
- Spatial Data Organization Information
- Spatial Reference Information
- Entity and Attribute Information
- Distribution Information
- Metadata Reference Information
- Identification Information
- Citation
- Originator
- City of Cambridge Geographic Information System (CGIS)
- Publication Date
- 1999
- Title
- Cambridge Hydrography Polygons
- Geospatial Data Presentation Form
- vector digital data
- Publication Information
- Publication Place
- Cambridge, MA.
- Publisher
- City of Cambridge
- Online Linkage
- https://hgl.harvard.edu/catalog/harvard-camhydrop
- Abstract
- This data layer polygon coverage depicts hydrographic features (ponds, streams, reservoirs, lakes, swamps) in the City of Cambridge, Massachusetts.
- Purpose
- This layer is intended for researchers, students, and policy makers for reference and mapping purposes, and may be used for basic applications such as viewing, querying, and map output production. This layer will provide a basemap for layers related to natural resource analysis, statistical enumeration and analysis, or to support graphical overlays and analysis with other spatial data. More advanced user applications may focus on urban and rural land use planning, socio-economic analysis and related areas (including defining boundaries, managing assets and facilities, integrating attribute databases with geographic features, spatial analysis, and presentation output.)
- Temporal Extent
- Currentness Reference
- publication date
- Time Instant
- 19970902
- Bounding Box
- West
- -71.158292
- East
- -71.062134
- North
- 42.404709
- South
- 42.351015
- ISO Topic Category
- inlandWater
- Theme Keyword
- Municipal
- Theme Keyword Thesaurus
- HGL Category Keyword Thesaurus
- Theme Keyword
- Water
- Hydrography
- Rivers
- Reservoirs
- Swamps
- Theme Keyword Thesaurus
- LCSH
- Theme Keyword
- Hydrography Polygons
- Theme Keyword Thesaurus
- None
- Place Keyword
- Cambridge
- Massachusetts
- Place Keyword Thesaurus
- GNIS
- Temporal Keyword
- Access Restrictions
- Access is granted to licensee (Harvard University) only. Available only to Harvard University affiliates.
- Use Restrictions
- For educational non-commercial use only. The City of Cambridge makes no claims, no representations, and no warranties, express or implied, concerning the validity (express or implied), the reliability or the accuracy of the GIS data and GIS data products furnished by the City, including the implied validity of any uses of such data
- Status
- Complete
- Maintenance and Update Frequency
- Unknown
- Point of Contact
- Contact Organization
- City of Cambridge Management Information Systems
- Delivery Point
- 831 Massachusetts Ave
- Delivery Point
- 2nd Floor
- City
- Cambridge
- State
- MA
- Postal Code
- 02139
- Country
- USA
- Contact Telephone
- (617) 349-4140
- Contact Facsimile Telephone
- (617) 349-6165
- Contact Electronic Mail Address
- gis@ci.cambridge.ma.us
- Hours of Service
- Monday through Friday 8:30 A.M. to 5:00 P.M. EST-USA
- Credit
- GIS data supplied by City of Cambridge GIS.
- Native Data Set Environment
- Microsoft Windows NT Version 4.0 (Build 1381) Service Pack 6; ESRI ArcCatalog 8.2.0.700
- Data Quality Information
- Attribute Accuracy Report
- Lakes, ponds and reservoirs, natural ponds, holding ponds, stormwater management ponds, and other ponds that are greater than 0.5 acres are included. Rivers are shown as a double line when its greater than 20' wide on the ground scale. Swamps are areas characterized by patchy vegetation that may be interspersed with small pools of standing water.
- Horizontal Positional Accuracy Report
- Color aerial photography at a scale of 1" = 400' was captured on March 29, 1995 for the subsequent development of base map data. Forward lap was 80% 2%. Sidelap was a minimum of 30% . Crab was less than 3 degrees when measured with respect to any two successive exposures. Control Points: The plotted position of each control point shall lie to an accuracy of one-hundredth (1/100) of an inch of its true position, as expressed by the State Plane coordinate for that point.
- Lineage
- Spatial Data Organization Information
- Direct Spatial Reference Method
- Vector
- Point and Vector Object Information
- SDTS Terms Description
- SDTS Point and Vector Object Type
- G-polygon
- Point and Vector Object Count
- 24
- Spatial Reference Information
- Horizontal Coordinate System Definition
- Geographic
- Latitude Resolution
- 0.000001
- Longitude Resolution
- 0.000001
- Geographic Coordinate Units
- Decimal degrees
- Geodetic Model
- Horizontal Datum Name
- D_WGS_1984
- Ellipsoid Name
- WGS_1984
- Semi-major Axis
- 6378137.000000
- Denominator of Flattening Ratio
- 298.257224
- Vertical Coordinate System Definition
- Altitude System Definition
- Altitude Datum Name
- North American Vertical Datum of 1988
- Altitude Resolution
- 1.000000
- Altitude Encoding Method
- Explicit elevation coordinate included with horizontal coordinates
- Entity and Attribute Information
- Entity Type
- Entity Type Label
- Hydrographic Features
- Entity Type Definition
- Polygons represent water features
- Entity Type Definition Source
- CGIS (Cambridge GIS)
- Attributes
- TIM.CAMHYDROP.AREA
- Area of feature in square coverage units
- Definition Source
- Computed
- PERIMETER
- Perimeter length of feature in map units
- Definition Source
- Computed
- HYDRO_
- Numeric Internal Feature Identifier
- Definition Source
- CGIS
- HYDRO_ID
- Numeric Internal Feature Identifier
- Definition Source
- CGIS
- FCODE
- Length of feature in map units
- 10
- Reservoir
- 20
- Lake
- 30
- Pond
- 40
- River (double line)
- 50
- Swamp
- Definition Source
- Computed
- SHAPE
- Feature geometry. (Coordinates defining the features.)
- Definition Source
- ESRI
- SHAPE.AREA
- Area of feature in square coverage units
- Definition Source
- Computed
- SHAPE.LEN
- Feature length in map units
- Definition Source
- Computed
- SHAPE.FID
- Internal feature number. (Sequential unique whole numbers that are automatically generated.)
- Definition Source
- ESRI
- Distribution Information
- Format Name
- Shape
- Distributor
- Harvard Geospatial Library
- Name
- Metadata Reference Information
- Metadata Date
- 20030918
- Metadata Contact
- Contact Information
- Contact Person Primary
- Contact Person
- Contact Organization
- Harvard Geospatial Library
- Contact Address
- Address
- Harvard University Library
- Address
- Office For Information Systems
- Address
- 1280 Massachusetts Avenue
- City
- Cambridge
- State or Province
- MA.
- Postal Code
- 02138
- Country
- USA
- Contact Voice Telephone
- 617-495-2417
- Contact Facsimile Telephone
- 617-496-0440
- Contact Electronic Mail Address
- hgl_ref@hulmail.harvard.edu
- Metadata Standard Name
- FGDC Content Standards for Digital Geospatial Metadata
- Metadata Standard Version
- FGDC-STD-001-1998
- Metadata Extensions
- Online Linkage
- http://www.esri.com/metadata/esriprof80.html
- Profile Name
- ESRI Metadata Profile
