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. 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 "Completenesss_Report" for more information. 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. 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). 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 All photointerpretable wetlands are mapped given considerations of map and photo scale and state-of-the-art wetland delineation techniques. The target mapping unit is an estimate of the minimum-sized wetland that should be consistently mapped. It is not the smallest wetland that appears on the map, but instead it is the size class of the smallest group of wetlands that NWI attempts to map consistently. Users must realize however that some wetland types are conspicuous and readily identified (e.g., ponds) and smaller wetlands of these types may be mapped. Other types (drier-end wetlands and forested wetlands, especially evergreen types) are more difficult to photointerpret and larger ones may be missed. In forested regions, the target mapping unit varies with the scale of the aerial photographs given acceptable quality (e.g., captured during spring, leaf-off condition for deciduous trees), as follows for the Northeast, Southeast, and Northwest: 1:80,000 = 3-5 acres; 1:58,000 = 1-3 acres, and 1:40,000 = 1 acre. This means that where 1:58,000 photography was used, the NWI maps should show most wetlands larger than 1-3 acres. In the treeless prairies (e.g., Upper Midwest), 1/4-acre wetlands are typically mapped due to the openness of the terrain and occurrence of wetlands in distinct depressions. In forested regions, small open water and emergent wetlands may also be mapped where conspicuous. For Alaska, the target mapping unit is 2-5 acres, while for the Southwest, 1-3 acres is the target. Map users must pay close attention to the photo scale used to prepare the maps. Also, users should be aware that black and white imagery tends to yield more conservative interpretations than color infrared imagery, except when the latter was acquired during a dry year, complicating wetland detection. In most areas, farmed wetlands are not mapped, with exceptions including prairie pothole-type wetlands, cranberry bogs, and diked former tidelands in the Sacramento valley. Mucklands and other farmed wetlands are usually not shown on the maps. As mentioned in the "Use_Constraints" section, no attempt was made to separate regulated wetlands from other wetlands, as these decisions must be based on criteria established by Federal and state regulatory agencies. Maps produced by photointerpretation techniques will never be as accurate as a detailed on-the-ground delineation, so the boundaries on the NWI maps should be considered generalized, especially in areas of low topographic relief (e.g., coastal plains and glaciolacustrine plains). Partly drained wetlands may also be conservatively mapped, since they may be difficult to photointerpret and in many cases, require site-specific assessment for validation. For more information on the limitations of NWI maps, consult "NWI Maps: What They Tell Us" (National Wetlands Newsletter Vol 19/2, March-April 1997, pp. 7- 12; a copy can be obtained from the U.S. Fish and Wildlife Service, ES-NWI, 300 Westgate Center Drive, Hadley, MA 01035). 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 ( using Cartgraphic Engineering 4X Mirror Stereoscopes) 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@wetlands.nwi.fws.gov 7.5 Metadata Standard Name: FGDC Content Standards for Digital Geospatial Metadata 7.6 Metadata Standard Version: 19940608