This data layer contains wetlands in Newton as mapped by the Massachusetts State Department of Environmental Protection, in collaboration with MassGIS.
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, or to provide a basemap to support graphical overlays and analysis with other spatial data.
This layer will provide a basemap for layers related to real property, environmental managament and mitigation and related purposes such as urban planning, public works, or utilities purposes (including defining boundaries, managing assets and facilities, integrating attribute databases with geographic features, spatial analysis, and presentation output.)
Supplemental Information
The datalayer is being developed by DEP GIS group. Distribution is through MassGIS. Questions may be directed to DEP GIS to 617-574-6814.
Temporal Extent
Currentness Reference
approximate ground condition
Time Instant
1998
Bounding Box
West
-71.270322
East
-71.167453
North
42.367854
South
42.283246
ISO Topic Category
biota
inlandWaters
Theme Keyword
Municipal
Theme Keyword Thesaurus
HGL Category Keyword Thesaurus
Theme Keyword
Wetlands
Swamps
Fens
Marshes
Theme Keyword Thesaurus
LCSH
Place Keyword
Newton
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.
Status
Complete
Maintenance and Update Frequency
As needed
Point of Contact
Contact Organization
City of Newton GIS
Delivery Point
Information Technology Department
Delivery Point
City Hall Room 107
Delivery Point
1000 Commonwealth Avenue
City
Newton Center
State
MA
Postal Code
02459-1400
Country
USA
Contact Telephone
617-796-1180
Contact Telephone
617-796-1000
Credit
GIS data supplied by City of Newton 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
Logical Consistency Report
For layers containing line or polygon features, Newton's data layers are "topologically clean". This was verified with Arc/Info software version 7.x in 1998 and is an ongoing part of data maintenance for the relevant data layers.
Horizontal Positional Accuracy Report
This Wetlands layer is for planning purposes only; final wetland boundary determination must accord with MA Act M.G.L. c. 131.
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
152
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
coordinate pair
Coordinate Representation
Abscissa Resolution
0.000476
Ordinate Resolution
0.000476
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
National Geodetic Vertical Datum of 1929
Altitude Resolution
1.000000
Altitude Encoding Method
Explicit elevation coordinate included with horizontal coordinates
Entity and Attribute Information
Entity Type
Entity Type Label
Wetlands
Entity Type Definition
ESRI Shapefile. Polygons represent feature areas
Entity Type Definition Source
ESRI, Newton GIS
Attributes
NWTNWETLNDPY.AREA
Area of feature in square coverage units
Positive real numbers
Definition Source
ESRI
PERIMETER
Perimeter of feature in coverage units
Positive real numbers
Definition Source
ESRI
WETLANDS_
Internal Feature Identifier
Definition Source
ESRI
WETLANDS_I
Internal Feature Identifier
Sequential unique positive integer
Definition Source
ESRI
TILE_NAME
Internal Feature Identifier
Definition Source
ESRI
WETCODE
Wetand Conservancy Code
7
DM
8
M
9
OW
12
SS
14
WS1
Definition Source
Mass DEP
IT_VALC
Wetland Label Abbreviations
DM
Deep Marsh
M
Shallow Marsh, Meadow or Fen
OW
Open Water
SS
Shrub Swamp
WS1
Deciduous Wooded Swamp
U
Upland
Definition Source
Mass DEP
IT_VALDESC
Description of Wetland Codes
Definition Source
Mass DEP
Attribute Value Accuracy
See: Enumerated Domain Values for Item Value Code Attribute
TIM.NWTNWETLNDPY.FID
Internal feature number. (Sequential unique whole numbers that are automatically generated.)
Definition Source
ESRI
SHAPE
Feature geometry. (Coordinates defining the features.)
Definition Source
ESRI
SHAPE.AREA
Area of feature in square coverage units
Positive real numbers
Definition Source
ESRI
SHAPE.LEN
Length of arc in coverage units
Positive real numbers
Definition Source
ESRI
Distribution Information
Format Name
Shape
Distributor
Harvard Geospatial Library
Name
Metadata Reference Information
Metadata Date
20021015
Metadata Contact
Contact Information
Contact Person Primary
Contact Person
Contact Organization
Harvard Geospatial Library
Contact Address
Address
Office of Information Systems
Address
1280 Massachusetts Avenue
City
Cambridge
State or Province
MA
Postal Code
02138
Country
USA
Contact Voice Telephone
617-295-12417
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
