This raster layer represents surface elevation for the Boston Region, Massachusetts. This datalayer is a subset (covering only the Boston region) of the Massachusetts statewide digital elevation model. It was created from the digital terrain models that were produced as part of the 1:5,000 Black and White Digital Orthophoto imagery project. Cellsize is 5 meters by 5 meters. Each cell has an integer value, in meters, which represents its elevation above or below sea level.
Purpose
Planning and surface (terrain) analysis and cartographic display
Temporal Extent
Currentness Reference
publication date
Time Instant
20050228
Bounding Box
West
-71.421356
East
-70.724332
North
42.531749
South
42.195318
Theme Keyword
Altitudes
Theme Keyword Thesaurus
LCSH
ISO Topic Category
elevation
imageryBaseMapsEarthCover
Theme Keyword
digital elevation model
digital terrain model
Theme Keyword Thesaurus
None
Place Keyword
Massachusetts
Boston
Acton
Arlington
Ashland
Bedford
Belmont
Billerica
Braintree
Brookline
Burlington
Cambridge
Canton
Carlisle
Chelsea
Cohasset
Concord
Dedham
Dover
Everett
Framingham
Hingham
Holliston
Hull
Lexington
Lincoln
Lynn
Lynnfield
Malden
Marblehead
Medfield
Medford
Melrose
Millis
Milton
Nahant
Natick
Needham
Newton
Norwell
Norwood
Peabody
Quincy
Randolph
Reading
Revere
Salem
Saugus
Scituate
Sherborn
Somerville
Stoneham
Sudbury
Swampscott
Wakefield
Walpole
Waltham
Watertown
Wayland
Wellesley
Westford
Weston
Westwood
Weymouth
Wilmington
Winchester
Winthrop
Woburn
Place Keyword Thesaurus
GNIS
Temporal Keyword
Access Restrictions
None
Use Restrictions
None
Status
Complete
Maintenance and Update Frequency
None planned
Point of Contact
Contact Organization
EOEA - MassGIS
Delivery Point
251 Causeway Street
Delivery Point
Suite 500
City
Boston
State
MA
Postal Code
02114
Country
USA
Contact Telephone
(617) 626-1000
Contact Facsimile Telephone
(617) 626-1249
Contact Electronic Mail Address
michael.trust@state.ma.us
Hours of Service
9 AM - 5 PM
Native Data Set Environment
Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 2; ESRI ArcCatalog 9.1.0.722
Data Quality Information
Attribute Accuracy Report
Unknown
Logical Consistency Report
Unknown
Completeness Report
Covers Boston Region
Horizontal Positional Accuracy Report
The source digital terrain model data were collected on analytical stereoplotters at a sufficient density to support generation of 3-meter contours conforming to the National Map Accuracy Standards (+ or - 1.5 meters) at the nominal scale of 1:5,000.
Lineage
Source
Originator
MassGIS (Office : Mass.)
Publication Date
200304
Title
Digital Terrain Model (DTM)
Geospatial Data Presentation Form
raster digital data
Publication Information
Publication Place
Boston, Mass.
Publisher
Office of Geographic and Environmental Information (MassGIS)
Source Scale Denominator
5000
Type of Source Media
online
Source Temporal Extent
Time Period Information
Single Date/Time
Calendar Date
200304
Source Currentness Reference
publication date
Contribution
Source Digital Terrain Model
Spatial Data Organization Information
Direct Spatial Reference Method
Raster
Raster Object Information
Raster Object Type
Pixel
Row Count
7417
Column Count
11446
Vertical Count
1
Spatial Reference Information
Horizontal Coordinate System Definition
Planar
Grid Coordinate System
Grid Coordinate System Name
State Plane Coordinate System
State Plane Coordinate System
SPCS Zone Identifier
2001
Lambert Conformal Conic
Planar Coordinate Information
Planar Coordinate Encoding Method
row and column
Coordinate Representation
Abscissa Resolution
5.000189
Ordinate Resolution
4.999935
Planar Distance Units
meters
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 Resolution
1
Altitude Distance Units
meters
Altitude Encoding Method
Explicit elevation coordinate included with horizontal coordinates
Entity and Attribute Information
Entity Type
Entity Type Label
MASSGIS_5M_DEM
Entity Type Definition
Boston Region Digital Elevation Model (1:5,000) - Integer version
Entity Type Definition Source
MassGIS
Entity and Attribute Overview
Each cell has an integer value, in meters, which represents its elevation above or below sea level.
Entity and Attribute Detail Citation
Not applicable.
Distribution Information
Format Name
SDE Raster
Distributor
Harvard Geospatial Library
Online Access
http://hgl.harvard.edu
Name
Metadata Reference Information
Metadata Date
20090202
Metadata Contact
Contact Information
Contact Organization Primary
Contact Organization
Harvard Geospatial Library
Contact Position
Geospatial Resources Cataloger
Contact Address
Address
Harvard University Library
Address
Office For Information Systems
Address
90 Mount Auburn Street
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
Hours of Service
Monday - Friday, 9:00 am - 4:00 pm EST-USA
Metadata Standard Name
FGDC Content Standards for Digital Geospatial Metadata
