National Wetlands Inventory for Pennsylvania - point


Identification_Information:
Citation:
Citation_Information:
Originator:U.S. Fish and Wildlife Service
Publication_Date:2005
Title:
National Wetlands Inventory for Pennsylvania - point
Geospatial_Data_Presentation_Form:vector digital data
Publication_Information:
Publication_Place:St.Petersburg, Florida
Publisher:U.S. Fish and Wildlife Service
Other_Citation_Details:
National Wetlands Inventory information for this element varies for each 7.5' quad. See the quad-specific metadata file. this element varies for each 7.5' quad. See the quad-specific
Online_Linkage: http://www.pasda.psu.edu/
Description:
Abstract:
NWI digital data files are records of wetlands location and
classification as developed by the U.S. Fish & Wildlife Service.
The classification system was adopted as a national
classification standard in 1996 by the Federal Geographic Data
Committee. This dataset is one of a series available in 7.5
minute by 7.5 minute blocks containing ground planimetric
coordinates of wetlands point, line, and polygon features and
wetlands attributes. When completed, the series will provide
coverage for all of the contiguous United States, Hawaii,
Alaska, and U.S. protectorates in the Pacific and Caribbean.
Coverage includes both digital data and hardcopy maps. The NWI
maps do not show all wetlands since the maps are derived from
aerial photointerpretation with varying limitations due to
scale, photo quality, inventory techniques, and other factors.
Consequently, the maps tend to show wetlands that are readily
photointerpreted given consideration of photo and map scale. In
general, the older NWI maps prepared from 1970s-era black and
white photography (1:80,000 scale) tend to be very conservative,
with many forested and drier-end emergent wetlands (e.g., wet
meadows) not mapped. Maps derived from color infrared
photography tend to yield more accurate results except when this
photography was captured during a dry year, making wetland
identification equally difficult. Proper use of NWI maps
therefore requires knowledge of the inherent limitations of this
mapping. It is suggested that users also consult other
information to aid in wetland detection, such as U.S. Department
of Agriculture soil survey reports and other wetland maps that
may have been produced by state and local governments, and not
rely solely on NWI maps. See section on "Completeness_Report"
for more information. Also see an article in the National
Wetlands Newsletter (March-April 1997; Vol. 19/2, pp. 5-12)
entitled "NWI Maps: What They Tell Us" (a free copy of this
article can be ordered from U.S. Fish and Wildlife Service,
ES-NWI, 300 Westgate Center Drive, Hadley, MA 01035, telephone,
413-253-8620).
Purpose:
The data provide consultants, planners, and resource managers with information on wetland location and type. The data were collected to meet U.S. Fish & Wildlife Service's mandate to map the wetland and deepwater habitats of the United States. The purpose of this survey was not to map all wetlands and deepwater habitats of the United States, but rather to use aerial photointerpretation techniques to produce thematic maps that show, in most cases, the larger ones and types that can be identified by such techniques. The objective was to provide better geospatial information on wetlands than found on the U.S. Geological Survey topographic maps. It was not the intent of the NWI to produce maps that show exact wetland boundaries comparable to boundaries derived from ground surveys. Boundaries are therefore generalized in most cases. Consequently, the quality of the wetland data is variable mainly due to source photography, ease or difficulty of interpreting specific wetland types, and survey methods (e.g., level of field effort and state-of-the-art of wetland delineation). See section on "Completeness_Report" for more information.
Supplemental_Information:
This metadata document represents the static text
elements of the National Wetlands Inventory (NWI)
Metadata.  Quad-specific metadata files are available
through the FGDC Clearinghouse website.
Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date:REQUIRED: The year (and optionally month, or month and day) for which the data set corresponds to the ground.
Currentness_Reference:
ground condition
Status:
Progress:Complete
Maintenance_and_Update_Frequency:Irregular
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: -80.518180
East_Bounding_Coordinate: -75.034220
North_Bounding_Coordinate: 42.234800
South_Bounding_Coordinate: 39.721180
Keywords:
Theme:
Theme_Keyword_Thesaurus:ISO 19115 Topic Categories
Theme_Keyword:wetlands
Theme_Keyword:hydrologic
Theme_Keyword:land cover
Theme_Keyword:surface and manmade features
Theme_Keyword:inlandWaters
Theme_Keyword:biota
Place:
Place_Keyword:Pennsylvania
Access_Constraints:none
Use_Constraints:
Federal, State, and local regulatory agencies with jurisdiction
over wetlands may define and describe wetlands in a different
manner than that used in this inventory. There is no attempt, in
either the design or products of this inventory, to define the
limits of proprietary jurisdiction of any Federal, State, or
local government or to establish the geographical scope of the
regulatory programs of government agencies. Persons intending to
engage in activities involving modifications within or adjacent
to wetland areas should seek the advice of appropriate Federal,
State, or local agencies concerning specified agency regulatory
programs and proprietary jurisdictions that may affect such
activities.
Point_of_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization:U.S. Fish and Wildlife Service, National Wetlands Inventory Center
Contact_Position:Cartographer
Contact_Address:
Address_Type:mailing and physical address
Address:
9720 Executive Center Drive
City:St. Petersburg
State_or_Province:Florida
Postal_Code:33702
Country:United States
Contact_Voice_Telephone:727-570-5400
Native_Data_Set_Environment:
Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 2; ESRI ArcCatalog 9.0.0.535
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Data_Quality_Information:
Attribute_Accuracy:
Attribute_Accuracy_Report:
The attribute accuracy is tested by manual comparison of the
source with hard copy printouts and/or symbolized display of
the digital wetlands data on an interactive computer graphic
system. In addition, quality control verification software
(USFWS-NWI) tests the attributes against a master set of
valid wetland attributes.
Logical_Consistency_Report:
Polygons intersecting the neatline are closed along the
border. Segments making up the outer and inner boundaries of a
polygon tie end-to-end to completely enclose the area. Line
segments are a set of sequentially numbered coordinate pairs.
No duplicate features exist nor duplicate points in a data
string. Intersecting lines are separated into individual line
segments at the point of intersection. Point data are
represented by two sets of coordinate pairs, each with the
same coordinate values. All nodes are represented by a single
coordinate pair which indicates the beginning or end of a
line segment. The neatline is generated by connecting the four
corners of the digital file, as established during
initialization of the digital file. All data crossing the
neatline are clipped to the neatline and data within a
specified tolerance of the neatline are snapped to the
neatline. Tests for logical consistency are performed by
quality control verification software (USFWS-NWI).
Completeness_Report:
NWI maps do not show all wetlands, but attempt to show most
photointerpretable wetlands given considerations of map/photo
scale and wetland delineation practices. A target mapping
unit (tmu) is an estimate of the size class of the smallest
group of wetlands that NWI attempts to map consistently; it is
not the smallest wetland mapped. Recognize that some wetland
types are conspicuous and readily mapped (e.g., marshes and
ponds) and smaller ones may be mapped. Drier wetlands and
forested wetlands (especially evergreen) are more difficult
to photointerpret and larger ones may be missed. The tmu also
varies with photo scale; in forested regions, the tmu may be
3-5 acres (1:80K photos), 1-3 acres (1:58K), or 1 acre
(1:40K). NWI maps should show most wetlands larger than the
tmu. In the treeless prairies, a 1/4 acre tmu is possible due
to the openness of terrain and occurrence of wetlands in
distinct depressions. Take notice of the photo scale/type
used to make the maps (see legend) and realize that black and
white photos tend to yield more conservative interpretations
than color infrared film. Most farmed wetlands (e.g.,
mucklands) are usually not mapped, except for pothole-type
wetlands, cranberry bogs, and diked former tidelands
(Sacramento Valley). Partly drained wetlands are
conservatively mapped due to photointerpretation limitations.
No attempt was made to identify regulated wetlands from
other wetlands. Recognize that maps produced through
photointerpretation are not as accurate as one prepared from
on-the-ground surveys, so NWI boundaries are generalized.
Lineage:
Source_Information:
Source_Contribution:
The Domain includes U.S. Geological Survey (USGS),
U.S. Department of Agriculture (USDA), National
Aeronautics and Space Administration (NASA), special
project. Information for this element varies for each
7.5' quad. See the quad-specific metadata file.
Process_Step:
Process_Description:
Metadata imported.
Source_Used_Citation_Abbreviation:
C:\DOCUME~1\SBD~1.PAS\LOCALS~1\Temp\xml44E.tmp
Process_Step:
Process_Description:
Metadata imported.
Source_Used_Citation_Abbreviation:
D:\NWI_Update\finished_dd\pa_nwi_f.shp.xml
Process_Step:
Process_Description:
Metadata imported.
Source_Used_Citation_Abbreviation:
D:\NWI_Update\finished_dd\test_nwi.xml
Process_Step:
Process_Description:
Metadata imported.
Source_Used_Citation_Abbreviation:
E:\UCI\nwipoint.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:Entity point
Point_and_Vector_Object_Count:1716
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Spatial_Reference_Information:
Horizontal_Coordinate_System_Definition:
Geographic:
Latitude_Resolution:0.000010
Longitude_Resolution:0.000010
Geographic_Coordinate_Units:Decimal degrees
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: SDE.ADD1.PaNWIpoint
Attribute:
Attribute_Label:ATTRIBUTE
Attribute:
Attribute_Label:Shape
Attribute_Definition:
Feature geometry.
Attribute_Definition_Source:
ESRI
Attribute_Domain_Values:
Unrepresentable_Domain:
Coordinates defining the features.
Attribute:
Attribute_Label:PERIMETER
Attribute:
Attribute_Label:WHICKOF_
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:WHICKOF_ID
Attribute:
Attribute_Label:SDE.ADD1.PaNWIpoint.AREA
Attribute:
Attribute_Label:SHAPE
Attribute_Definition:
Feature geometry.
Attribute_Definition_Source:
ESRI
Attribute_Domain_Values:
Unrepresentable_Domain:
Coordinates defining the features.
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Distribution_Information:
Distributor:
Contact_Information:
Contact_Person_Primary:
Contact_Organization:Pennsylvania Spatial Data Access (PASDA)
Contact_Address:
Address_Type:mailing address
Address:
115 Land and Water Building
City:University Park
State_or_Province:Pennsylvania
Postal_Code:16801
Country:United States
Contact_Voice_Telephone:(814) 865 - 8792
Contact_Electronic_Mail_Address:pasda@psu.edu
Resource_Description:Downloadable Data
Standard_Order_Process:
Digital_Form:
Digital_Transfer_Information:
File_Decompression_Technique:zip
Transfer_Size:0.046
Digital_Transfer_Option:
Online_Option:
Access_Instructions:
www.pasda.psu.edu
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Metadata_Reference_Information:
Metadata_Date:20050603
Metadata_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization:Pennsylvania Spatial Data Access (PASDA)
Contact_Person:James Spayd
Contact_Position:Metadata Coordinator
Contact_Address:
Address_Type:mailing address
Address:
115 Land and Water Buildiing
City:University Park
State_or_Province:Pennsylvania
Postal_Code:16801
Country:United States
Contact_Voice_Telephone:(814) 865 - 8792
Contact_Electronic_Mail_Address:pasda@psu.edu
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
Metadata_Extensions:
Online_Linkage: http://www.esri.com/metadata/esriprof80.html
Profile_Name:ESRI Metadata Profile
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