NOTE: Quad-specific metadata files are not yet available.
National Wetlands Inventory (NWI) Metadata
1 Identification Information
1.1 Citation
8.1 Originator: U.S. Fish & Wildlife Service, National
Wetlands Inventory
8.2 Publication Date: Range from Oct. 1981 to present;
information for this element varies for each 7.5' quad. See the
quad-specific metadata file.
8.4 Title: Information for this element varies for each 7.5'
quad. See the quad-specific metadata file.
8.8 Publication Information
8.8.1 Publication Place: St.Petersburg, Florida
8.8.2Publisher: U.S. Fish & Wildlife Service, National
Wetlands Inventory
1.2 Description
1.2.1 Abstract: NWI digital data files are records of
wetlands location and classification as defined by the U.S. Fish &
Wildlife Service. 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 area 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. The digital data as
well as the hardcopy maps that were used as the source for the
digital data are produced and distributed by the U.S. Fish &
Wildlife Service's National Wetlands Inventory project.
1.2.2 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.
1.3 Time Period of Content
9.2 Multiple Dates/Times
9.1.1 Calendar Date: Ranges from Feb. 1971 to Dec. 1992.
Information for this element varies for each 7.5' quad. See the
quad-specific metadata file.
1.3.1 Currentness Reference: source photography date
1.4 Status
1.4.1 Progress: Complete
1.4.2 Maintenance and Update Frequency: Irregular
1.5 Spatial Domain
1.5.1 Bounding Coordinates
1.5.1.1 West Bounding Coordinate: Information for this
element varies for each 7.5' quad. See the quad-specific metadata
file.
1.5.1.2 East Bounding Coordinate: Information for this
element varies for each 7.5' quad. See the quad-specific metadata
file.
1.5.1.3 North Bounding Coordinate: Information for this
element varies for each 7.5' quad. See the quad-specific metadata
file.
1.5.1.4 South Bounding Coordinate: Information for this
element varies for each 7.5' quad. See the quad-specific metadata
file.
1.6 Keywords
1.6.1 Theme
1.6.1.1 Theme Keyword Thesaurus: None
1.6.1.2 Theme Keyword: wetlands
1.6.1.2 Theme Keyword: hydrologic
1.6.1.2 Theme Keyword: land cover
1.6.1.2 Theme Keyword: surface and manmade features
1.6.2 Place
1.6.2.1 Place Keyword Thesaurus: None
1.6.2.2 Place Keyword: Range includes all 50 states, Puerto
Rico, Virgin Islands. Information for this element varies for each
7.5' quad. See the quad-specific metadata file.
1.7 Access Constraints: none
1.8 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.
1.9 Point of Contact
10.2 Contact Organization Primary
10.1.2 Contact Organization: U.S. Fish & Wildlife Service,
National Wetlands Inventory
10.3 Contact Position: Chief Cartographer
10.4 Contact Address
10.4.1 Address Type: mailing and physical address
10.4.2 Address: 9720 Executive Center Drive
10.4.3 City: St.Petersburg
10.4.4 State or Province: Florida
10.4.5 Postal Code: 33702
1.13 Native Data Set Environment: NWI uses Wetlands Analytical
Mapping System (WAMS) software version 4.06 running under the
SUNOS 4.x operating system to digitize wetlands information.
2 Data Quality Information
2.1 Attribute Accuracy
2.1.1 Attribute Accuracy Report: 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, WAMS software (USFWS-NWI)
tests the attributes against a master set of valid wetland
attributes.
2.2 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 WAMS verification software (USFWS-NWI).
2.3 Completeness Report: All photo-interpretable wetlands are
mapped. In the treeless prairies, 1/4 acre wetlands are mapped.
In forested areas, small open water and emergent wetlands are
mapped. In general, the minimum mapping unit is from 1 to 3 acres
depending on the wetland type and the scale and emulsion of the
source aerial photography. In regions of the country where
evergreen forested wetlands predominate, wetlands smaller than 3
acres may not be mapped. Thus, a detailed on the ground and
historical analysis of a single site may result in a revision of
the wetland boundaries established through photographic
interpretation. In addition, some small wetlands and those
obscured by dense forest cover may not be included in this dataset.
Positional Accuracy
Horizontal Positional Accuracy
Horizontal Positional Accuracy Report: Horizontal
positional accuracy for the digital data is tested by visual
comparison of the source with hard copy plots.
2.5 Lineage
2.5.1 Source Information
2.5.1.1 Source Citation
8.1 Originator: 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.
8.2 Publication Date: Ranges from Feb. 1971 to Dec. 1992.
Information for this element varies for each 7.5' quad. See the
quad-specific metadata file.
8.4 Title: Domain includes National Aerial Photography
Program (NAPP), National High Altitude Photography (NHAP),
Agricultural and Stabilization Conservation Service (ASCS), NASA
or special project photography. Information for this element
varies for each 7.5' quad. See the quad-specific metadata file.
8.6 Geospatial Data Presentation Form: aerial photograph
2.5.1.2 Source Scale Denominator: Ranges from 20,000 to
132,000. Information for this element varies for each 7.5' quad.
See the quad-specific metadata file.
2.5.1.3 Type of Source Media: Domain includes black and
white, color infrared, or natural color aerial photograph film
transparency. Information for this element varies for each 7.5'
quad. See the quad-specific metadata file.
2.5.1.4 Source Time Period of Content
9.2 Multiple Dates/Times
9.1.1 Calendar Date: Ranges from Feb. 1971 to Dec.
1992. Information for this element varies for each 7.5' quad. See
the quad-specific metadata file.
2.5.1.4.1 Source Currentness Reference: photo date
2.5.1.5 Source Citation Abbreviation: NWI1
2.5.1.6 Source Contribution: wetlands spatial and attribute
information
2.5.1 Source Information
2.5.1.1 Source Citation
8.1 Originator: U.S. Geological Survey
8.2 Publication Date: Ranges from 1902 to 1992.
Information for this element varies for each 7.5' quad. See the
quad-specific metadata file.
8.4 Title: topographic map
8.6 Geospatial Data Presentation Form: map
8.8 Publication Information
8.8.1 Publication Place: Reston,VA
8.8.2 Publisher: U.S. Geological Survey
2.5.1.2 Source Scale Denominator: Domain includes 20,000,
24000. 25000, 30000, and 62500. Information for this element
varies for each 7.5' quad. See the quad-specific metadata file.
2.5.1.3 Type of Source Media: stable-base material
2.5.1.4 Source Time Period of Content
9.1 Single Date/Time
9.1.1 Calendar Date: Ranges from 1902 to 1992.
Information for this element varies for each 7.5' quad. See the
quad-specific metadata file.
2.5.1.4.1 Source Currentness Reference: publication date
2.5.1.5 Source Citation Abbreviation: NWI2
2.5.1.6 Source Contribution: base cartographic data
2.5.1 Source Information
2.5.1.1 Source Citation
8.1 Originator: U.S. Fish & Wildlife Service, National
Wetlands Inventory
8.2 Publication Date: Ranges from 1979 to 1994.
Information for this element varies for each 7.5' quad. See the
quad-specific metadata file.
8.4 Title: Information for this element varies for each
7.5' quad. See the quad-specific metadata file.
8.6 Geospatial Data Presentation Form: map
8.8 Publication Information
8.8.1 Publication Place: St.Petersburg,Florida
8.8.2 Publisher: U.S. Fish & Wildlife Service, National
Wetlands Inventory
2.5.1.2 Source Scale Denominator: Domain includes 20,000,
24000. 25000, 30000, and 62500. Information for this element
varies for each 7.5' quad. See the quad-specific metadata file.
2.5.1.3 Type of Source Media: stable-base material
2.5.1.4 Source Time Period of Content
9.1 Single Date/Time
9.1.1 Calendar Date: Ranges from 1979 to 1994.
Information for this element varies for each 7.5' quad. See the
quad-specific metadata file.
2.5.1.4.1 Source Currentness Reference: publication date
2.5.1.5 Source Citation Abbreviation: NWI3
2.5.1.6 Source Contribution: wetlands location and
classification
2.5.2 Process Step
2.5.2.1 Process Description: NWI maps are compiled through
manual photointerpretation of NHAP or NAPP aerial photography
supplemented by Soil Surveys and field checking of wetland photo
signatures. Delineated wetland boundaries are manually transferred
from interpreted photos to USGS 7.5 minute topographic quadrangle
maps and then manually labelled. Quality control steps occur
throughout the photointerpretation, map compilation, and map
reproduction processes.
2.5.2.2 Source Used Citation Abbreviation: NWI1
2.5.2.2 Source Used Citation Abbreviation: NWI2
2.5.2.3 Process Date: Ranges from 1979 to 1994. Information
for this element varies for each 7.5' quad. See the quad-specific
metadata file.
2.5.2.5 Source Produced Citation Abbreviation: NWI3
2.5.2 Process Step
2.5.2.1 Process Description: Digital wetlands data are
either manually digitized or scanned from stable-base copies of the
1:24,000 scale wetlands overlays registered to the standard U.S.
Geological Survey (USGS) 7.5 minute quadrangles into topologically
correct data files using Wetlands Analytical Mapping System (WAMS)
software. Files contain ground planimetric coordinates and wetland
attributes. The quadrangles were referenced to the North American
Datum of 1927 (NAD27) horizontal datum. The scanning process
captured the digital data at a scanning resolution of at least
0.001 inches; the resulting raster data were vectorized and then
attributed on an interactive editing station. Manual digitizing
used a digitizing table to capture the digital data at a resolution
of at least 0.005 inches; attribution was performed as the data
were digitized. The determination of scanning versus manual
digitizing production method was based on feature density, source
map quality, feature symbology, and availability of production
systems. The data were checked for position by comparing plots of
the digital data to the source material.
2.5.2.2 Source Used Citation Abbreviation: NWI3
2.5.2.3 Process Date: Ranges from Oct. 1981 to present.
Information for this element varies for each 7.5' quad. See the
quad-specific metadata file.
3 Spatial Data Organization Information
3.2 Direct Spatial Reference Method: vector
4 Spatial Reference Information
4.1 Horizontal Coordinate System Definition
4.1.2 Planar
4.1.2.2 Grid Coordinate System
4.1.2.2.1 Grid Coordinate System Name: Universal
Transverse Mercator
4.1.2.2.2 Universal Transverse Mercator
4.1.2.2.2.1 UTM Zone Number: Ranges from 4 to 20.
Information for this element varies for each 7.5' quad. See the
quad-specific metadata file.
4.1.2.1.2 Transverse Mercator (Map Projection
Parameters)
4.1.2.1.2.17 Scale Factor at Central Meridian:
0.9996
4.1.2.1.2.2 Longitude of Central Meridian: Ranges
from -159.0 to -63.0. Information for this element varies for each
7.5' quad. See the quad-specific metadata file.
4.1.2.1.2.3 Latitude of Projection Origin: 0.0
4.1.2.1.2.4 False Easting: 500000.0
4.1.2.1.2.5 False Northing: 0.0
4.1.2.4 Planar Coordinate Information
4.1.2.4.1 Planar Coordinate Encoding Method: coordinate
pair
4.1.2.4.2 Coordinate Representation
4.1.2.4.2.1 Abscissa Resolution: 0.61
4.1.2.4.2.2 Ordinate Resolution: 0.61
4.1.2.4.4 Planar Distance Units: meters
4.1.4 Geodetic Model
4.1.4.1 Horizontal Datum Name: North American Datum of 1927
4.1.4.2 Ellipsoid Name: Clarke 1866
4.1.4.3 Semi-major Axis: 6378206.4
4.1.4.4 Denominator of Flattening Ratio: 294.9787
5 Entity and Attribute Information
5.1 Detailed Description
5.1.1 Entity Type
5.1.1.1 Entity Type Label: wetland
5.1.1.2 Entity Type Definition: Wetlands are lands
transitional between terrestrial and aquatic systems where the
water table is usually at or near the surface or the land is
covered by shallow water. For purposes of this classification
wetlands must have one or more of the following three attributes:
1) at least periodically, the land supports predominantly
hydrophytes; 2) the substrate is predominantly undrained hydric
soil; and 3) the substrate is non-soil and is saturated with water
or covered by shallow water at some time during the growing season
of each year.
5.1.1.3 Entity Type Definition Source: Cowardin, L.M., V.
Carter, F. Golet, and E. LaRoe. 1979. Classification of wetlands
and deepwater habitats of the United States. U.S. Fish Wildlife
Service. 103 pp.
5.1.2 Attribute
5.1.2.1 Attribute label: wetland classification
5.1.2.2 Attribute Definition: classification of the wetland
5.1.2.3 Attribute Definition Source: Cowardin, L.M., V.
Carter, F. Golet, and E. LaRoe. 1979. Classification of wetlands
and deepwater habitats of the United States. U.S. Fish Wildlife
Service. 103 pp.
5.1.2.4 Attribute Domain Values
5.1.2.4.3 Codeset Domain
5.1.2.4.3.1 Codeset Name: valid wetland classification
code list
5.1.2.4.3.2 Codeset Source: Photointerpretation
Conventions for the National Wetlands Inventory, March 1990
5.2 Overview Description
5.2.1 Entity and Attribute Overview: The wetland
classification system is hierarchical, with wetlands and deepwater
habitats divided among five major systems at the broadest level.
The five systems include Marine (open ocean and associated
coastline), Estuarine (salt marshes and brackish tidal water),
Riverine (rivers, creeks, and streams), Lacustrine (lakes and deep
ponds), and Palustrine (shallow ponds, marshes, swamps, sloughs).
Systems are further subdivided into subsystems which reflect
hydrologic conditions. Below the subsystem is the class which
describes the appearance of the wetland in terms of vegetation or
substrate. Each class is further subdivided into subclasses;
vegetated subclasses are described in terms of life form and
substrate subclasses in terms of composition. The classification
system also includes modifiers to describe hydrology (water
regime), soils, water chemistry (pH, salinity), and special
modifiers relating to man's activities (e.g., impounded, partly
drained).
5.2.2 Entity and Attribute Detail Citation: Cowardin, L.M., V.
Carter, F. Golet, and E. LaRoe. 1979. Classification of wetlands
and deepwater habitats of the United States. U.S. Fish Wildlife
Service. 103 pp.
5.2.2 Entity and Attribute Detail Citation:
Photointerpretation Conventions for the National Wetlands
Inventory, March 1990
6 Distribution Information
6.1 Distributor
10.2 Contact Organization Primary
10.1.2 Contact Organization: USGS-Earth Science Information
Center
10.4 Contact Address
10.4.1 Address Type: mailing address
10.4.2 Address: 507 National Center
10.4.3 City: Reston
10.4.4 State or Province: Virginia
10.4.5 Postal Code: 22092
10.5 Contact Voice Telephone: 1 800 USA MAPS
10.5 Contact Voice Telephone: 1 703 638 6045
6.3 Distribution Liability: none
6.4 Standard Order Process
6.4.1 Non-digital Form: Hardcopy NWI wetlands maps at various
scales, on diazo paper or mylar, composited with or without the
USGS base map.
6.4.2 Digital Form
6.4.2.1 Digital Transfer Information
6.4.2.1.1 Format Name: DLG
6.4.2.1.2 Format Version Number: 3
6.4.2.1.4 Format Specification: Optional
6.4.2.2 Digital Transfer Option
6.4.2.2.1 Online Option
6.4.2.2.1.1 Computer Contact Information
6.4.2.2.1.1.1 Network Address
6.4.2.2.1.1.1.1 Network Resource Name: ftp:
192.189.43.33 (dlgdata directory) or http://www.nwi.fws.gov/
6.4.2.2.1.2 Access Instructions: Anyone with access
to the Internet may connect to NWI's server via anonymous ftp and
download available NWI digital wetlands data in DLG3-Optional
format. Indexes for NWI hardcopy maps and digital data are also
available as well as digital wetlands data in a variety of other
formats (MOSS Export, GRASS vector, DXF, and ARC Export) for 14
sample 7.5 minute quadrangles throughout the USA. To access: ftp
to the NWI server, login as anonymous, enter your e-mail address at
the password prompt, change to the dlgdata directory for DLG data,
change to the maps directory for indexes, change to the samples
directory for a sampling of digital data files in formats other
than DLG. Use the ftp 'get' command to transfer readme file for
further instructions. View the NWI home page by pointing your
World Wide Web browser to the http address shown above.
6.4.2.2.1.3 Online Computer and Operating System: Sun
Model 690MP Unix server. SunOS 4.X operating system.
6.4.2.2.2 Offline Option
6.4.2.2.2.1Offline Media: 8mm cartridge tape (2,5,
or 10 Gb)
6.4.2.2.2.2 Recording Capacity
6.4.2.2.2.2.1 Recording Density: 2
6.4.2.2.2.2.1 Recording Density: 5
6.4.2.2.2.2.1 Recording Density: 10
6.4.2.2.2.2.2 Recording Density Units: gigabytes
6.4.2.2.2.3 Recording Format: tar
6.4.2.2.2.3 Recording Format: ASCII recording mode
available with no internal labels; the logical record length is 80
bytes; the block size is a multiple of 80 up to 8000 bytes
6.4.2.2.2 Offline Option
6.4.2.2.2.1Offline Media: 1/4-inch cartridge tape
(150 Mb)
6.4.2.2.2.2 Recording Capacity
6.4.2.2.2.2.1 Recording Density: 150
6.4.2.2.2.2.2 Recording Density Units: megabytes
6.4.2.2.2.3 Recording Format: tar
6.4.2.2.2 Offline Option
6.4.2.2.2.1 Offline Media: 9-track tape
6.4.2.2.2.2 Recording Capacity
6.4.2.2.2.2.1 Recording Density: 1600
6.4.2.2.2.2.1 Recording Density: 6250
6.4.2.2.2.2.2 Recording Density Units: characters
per inch
6.4.2.2.2.3 Recording Format: tar
6.4.2.2.2.3 Recording Format: ASCII recording mode
available with no internal labels; the logical record length is 80
bytes; the block size is a multiple of 80 up to 8000 bytes
6.4.2.2.2 Offline Option
6.4.2.2.2.1 Offline Media: 3-1/2 inch floppy disk
(high density)
6.4.2.2.2.2 Recording Capacity
6.4.2.2.2.2.1 Recording Density: 1.44
6.4.2.2.2.2.2 Recording Density Units: megabytes
6.4.2.2.2.3 Recording Format: tar
6.4.2.2.2.3 Recording Format: MS-DOS
6.4.2 Digital Form
6.4.2.1 Digital Transfer Information
6.4.2.1.1 Format Name: MOSS
6.4.2.1.4 Format Specification: Export
6.4.2.2 Digital Transfer Option
6.4.2.2.2 Offline Option
6.4.2.2.2.1Offline Media: 8mm cartridge tape (2,5,
or 10 Gb)
6.4.2.2.2.2 Recording Capacity
6.4.2.2.2.2.1 Recording Density: 2
6.4.2.2.2.2.1 Recording Density: 5
6.4.2.2.2.2.1 Recording Density: 10
6.4.2.2.2.2.2 Recording Density Units: gigabytes
6.4.2.2.2.3 Recording Format: tar
6.4.2.2.2.3 Recording Format: ASCII recording mode
available with no internal labels; the logical record length is 80
bytes; the block size is a multiple of 80 up to 8000 bytes
6.4.2.2.2 Offline Option
6.4.2.2.2.1 Offline Media: 1/4-inch cartridge tape
(150 Mb)
6.4.2.2.2.2 Recording Capacity
6.4.2.2.2.2.1 Recording Density: 150
6.4.2.2.2.2.2 Recording Density Units: megabytes
6.4.2.2.2.3 Recording Format: tar
6.4.2.2.2 Offline Option
6.4.2.2.2.1 Offline Media: 9-track tape
6.4.2.2.2.2 Recording Capacity
6.4.2.2.2.2.1 Recording Density: 1600
6.4.2.2.2.2.1 Recording Density: 6250
6.4.2.2.2.2.2 Recording Density Units: characters
per inch
6.4.2.2.2.3 Recording Format: tar
6.4.2.2.2.3 Recording Format: ASCII recording mode
available with no internal labels; the logical record length is 80
bytes; the block size is a multiple of 80 up to 8000 bytes
6.4.2.2.2 Offline Option
6.4.2.2.2.1 Offline Media: 3-1/2 inch floppy disk
(high density)
6.4.2.2.2.2 Recording Capacity
6.4.2.2.2.2.1 Recording Density: 1.44
6.4.2.2.2.2.2 Recording Density Units: megabytes
6.4.2.2.2.3 Recording Format: tar
6.4.2.2.2.3 Recording Format: MS-DOS
6.4.2 Digital Form
6.4.2.1 Digital Transfer Information
6.4.2.1.1 Format Name: GRASS
6.4.2.1.2 Format Version Number: 3.0
6.4.2.1.4 Format Specification: Vector
6.4.2.2 Digital Transfer Option
6.4.2.2.2 Offline Option
6.4.2.2.2.1Offline Media: 8mm cartridge tape (2,5,
or 10 Gb)
6.4.2.2.2.2 Recording Capacity
6.4.2.2.2.2.1 Recording Density: 2
6.4.2.2.2.2.1 Recording Density: 5
6.4.2.2.2.2.1 Recording Density: 10
6.4.2.2.2.2.2 Recording Density Units: gigabytes
6.4.2.2.2.3 Recording Format: tar
6.4.2.2.2.3 Recording Format: ASCII recording mode
available with no internal labels; the logical record length is 80
bytes; the block size is a multiple of 80 up to 8000 bytes
6.4.2.2.2 Offline Option
6.4.2.2.2.1Offline Media: 1/4-inch cartridge tape
(150 Mb)
6.4.2.2.2.2 Recording Capacity
6.4.2.2.2.2.1 Recording Density: 150
6.4.2.2.2.2.2 Recording Density Units: megabytes
6.4.2.2.2.3 Recording Format: tar
6.4.2.2.2 Offline Option
6.4.2.2.2.1 Offline Media: 9-track tape
6.4.2.2.2.2 Recording Capacity
6.4.2.2.2.2.1 Recording Density: 1600
6.4.2.2.2.2.1 Recording Density: 6250
6.4.2.2.2.2.2 Recording Density Units: characters
per inch
6.4.2.2.2.3 Recording Format: tar
6.4.2.2.2.3 Recording Format: ASCII recording mode
available with no internal labels; the logical record length is 80
bytes; the block size is a multiple of 80 up to 8000 bytes
6.4.2.2.2 Offline Option
6.4.2.2.2.1 Offline Media: 3-1/2 inch floppy disk
(high density)
6.4.2.2.2.2 Recording Capacity
6.4.2.2.2.2.1 Recording Density: 1.44
6.4.2.2.2.2.2 Recording Density Units: megabytes
6.4.2.2.2.3 Recording Format: tar
6.4.2.2.2.3 Recording Format: MS-DOS
6.4.2 Digital Form
6.4.2.1 Digital Transfer Information
6.4.2.1.1 Format Name: DXF
6.4.2.2 Digital Transfer Option
6.4.2.2.2 Offline Option
6.4.2.2.2.1Offline Media: 8mm cartridge tape (2,5,
or 10 Gb)
6.4.2.2.2.2 Recording Capacity
6.4.2.2.2.2.1 Recording Density: 2
6.4.2.2.2.2.1 Recording Density: 5
6.4.2.2.2.2.1 Recording Density: 10
6.4.2.2.2.2.2 Recording Density Units: gigabytes
6.4.2.2.2.3 Recording Format: tar
6.4.2.2.2.3 Recording Format: ASCII recording mode
available with no internal labels; the logical record length is 80
bytes; the block size is a multiple of 80 up to 8000 bytes
6.4.2.2.2 Offline Option
6.4.2.2.2.1Offline Media: 1/4-inch cartridge tape
(150 Mb)
6.4.2.2.2.2 Recording Capacity
6.4.2.2.2.2.1 Recording Density: 150
6.4.2.2.2.2.2 Recording Density Units: megabytes
6.4.2.2.2.3 Recording Format: tar
6.4.2.2.2 Offline Option
6.4.2.2.2.1 Offline Media: 9-track tape
6.4.2.2.2.2 Recording Capacity
6.4.2.2.2.2.1 Recording Density: 1600
6.4.2.2.2.2.1 Recording Density: 6250
6.4.2.2.2.2.2 Recording Density Units: characters
per inch
6.4.2.2.2.3 Recording Format: tar
6.4.2.2.2.3 Recording Format: ASCII recording mode
available with no internal labels; the logical record length is 80
bytes; the block size is a multiple of 80 up to 8000 bytes
6.4.2.2.2 Offline Option
6.4.2.2.2.1 Offline Media: 3-1/2 inch floppy disk
(high density)
6.4.2.2.2.2 Recording Capacity
6.4.2.2.2.2.1 Recording Density: 1.44
6.4.2.2.2.2.2 Recording Density Units: megabytes
6.4.2.2.2.3 Recording Format: tar
6.4.2.2.2.3 Recording Format: MS-DOS
6.4.3 Fees: Digital Form - The online copy of the DLG data
set may be retrieved via ftp at no charge. For delivery of digital
data on magnetic tape, the prices are: purchased by single 7.5
minute quad unit: $40 per dataset; purchased in groups of 2 to 6:
$20 per dataset; purchased in groups of 7 or more: $90 base fee
plus $7 per dataset. Non-digital Form - $3.50 per diazo paper map;
$5.25 per diazo mylar map.
6.4.4 Ordering Instructions: For digital data orders on 3.5"
floppy disk, a maximum order of 10 quads is allowed. Data may be
ordered in latitude/longitude or State Plane Coordinate System
coordinates (Universal Transverse Mercator coordinates are
standard). Latitude/longitude coordinates are not available with
GRASS format. For this service, the user must order data through
USGS-ESIC for delivery on magnetic media. Please specify the
desired coordinate system when ordering. Non-digital form: specify
wetlands overlay or wetlands overlay composited with USGS base map.
6.6 Technical Prerequisites: Check NWI's ftp site, maps
directory for an explanation of the wetland codes. Check NWI's
ftp site, software directory for a program that will parse the
wetland codes to fixed length format. Check NWI's ftp site,
software directory for an AML to convert NWI DLG files to ARC/INFO
coverages.
7 Metadata Reference Information
7.1 Metadata Date: 19950711
7.4 Metadata Contact
10.1 Contact Person Primary
10.1.1 Contact Person: Linda Shaffer
10.1.2 Contact Organization: U.S. Fish & Wildlife Service,
National Wetlands Inventory
10.3 Contact Position: Chief Cartographer
10.4 Contact Address
10.4.1 Address Type: mailing and physical address
10.4.2 Address: 9720 Executive Center Drive
10.4.3 City: St.Petersburg
10.4.4 State or Province: Florida
10.4.5 Postal Code: 33702
10.5 Contact Voice Telephone: 813 570 5411
10.7 Contact Facsimile Telephone: 813 570 5420
10.8 Contact Electronic Mail Address:
linda@enterprise.nwi.fws.gov
7.5 Metadata Standard Name: FGDC Content Standards for Digital
Geospatial Metadata
7.6 Metadata Standard Version: 19940608
HUMBOLDT BAY HARBOR, RECREATION, & CONSERVATION DISTRICT
A Special District of the State of California
A Special District of the State of California