National Wetlands Inventory (NWI) Metadata NOTE: 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. U.S. Fish & Wildlife Service, Ranges from Oct. 1981 to present; St.Petersburg, Florida U.S. Fish & Wildlife Service, National Wetlands Inventory ftp://ftp.nwi.fws.gov/arcdata/ ftp://ftp.nwi.fws.gov/shapedata/ 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 file. 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). 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. Multiple_Dates_Times: Ranges from Feb. 1971 to Nov. 1997. Information for this element varies for each 7.5' quad. See the quad-specific metadata file. Source photography date Complete Irregular Information for this element varies Information for this element varies Information for this element varies Information for this element varies for each 7.5' quad. See the quad-specific metadata file. for each 7.5' quad. See the quad-specific metadata file. for each 7.5' quad. See the quad-specific metadata file. for each 7.5' quad. See the quad-specific metadata file. None wetlands hydrologic land cover surface and manmade features USGS Quadrangle Names 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. None 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. U.S. Fish & Wildlife Service, National Wetlands Inventory Center Cartographer Mailing and Physical address

9720 Executive Center Drive

St. Petersburg Florida 33702 US 727-570-5400 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. 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). 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. Horizontal 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. Information for this element varies for each 7.5' quad. See the quad-specific metadata file. Ranges from 20,000 to 132,000. Domain includes black and white, Multiple_Dates_Times: Ranges from Feb. 1971 to Nov. 1997. Information for this element varies for each 7.5' quad. See the quad-specific metadata file. Photo date PHOTOS Wetlands spatial and attribute Remote-sensing image Reston, Virginia U.S. Geological Survey Information for this element varies for each 7.5' quad. See the quad-specific metadata file. 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. information U.S. Geological Survey Ranges from 1902 to 1995. map Reston, Virginia U.S. Geological Survey Information for this element varies for each 7.5' quad. See the quad-specific metadata file. Domain includes 20000, 24000, stable-base material Single_Date_Time: Ranges from 1902 to 1995. Information for this element varies for each 7.5' quad. See the quad-specific metadata file. publication date USGS QUAD base cartographic data 25000, 30000, and 62500. Information for this element varies for each 7.5' quad. See the quad-specific metadata file. U.S.D.A. Natural Resources Conservation Varies map Washington, DC Government Printing Office Service Varies paper Single_Date_Time: Varies publication date SOILS wetlands location and classification 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 labeled. Quality control steps occur throughout the photointerpretation, map compilation, and map reproduction processes. 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 Arc/Info 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. PHOTOS USGS QUADS Ranges from 1979 to 2001. Information for NWI this element varies for each 7.5' quad. See the quad-specific metadata file. Point_and_Vector_Object_Information Universal Transverse Ranges from 4 to 20. Information 0.9996 Ranges from -159.0 0.0 500000.0 0.0 to -63.0. Information for this element varies for each 7.5' quad. See the quad-specific metadata file. for this element varies for each 7.5' quad. See the quad-specific metadata file. Coordinate_Representation Meters Clarke 1866 294.9787 Horizonal_Datum_Name: North American Datum of 1927 Semi_major_Axis: 6378206.4 Wetland Wetlands are lands transitional Cowardin, L.M., V. Carter, 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 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. F. Golet, and E. LaRoe. 1979. Classification of wetlands and deepwater habitats of the United States. U.S. Fish Wildlife Service. 103 pp. Wetland classification Classification of the Wetland Cowardin, L.M., V. Carter, Valid wetland classification code list Photointerpretation Conventions for the National Wetlands Inventory, January 1995 F. Golet, and E. LaRoe. 1979. Classification of wetlands and deepwater habitats of the United States. U.S. Fish Wildlife Service. 103 pp. Cooperator-Run Distribution Centers List@www.nwi.fws.gov/Maps/distribution_ctrs.htm None Arc Export and Shapefile ftp://ftp.nwi.fws.gov/arcdata/ ftp://ftp.nwi.fws.gov/shapedata/ http://www.nwi.fws.gov/ Anyone with access to the Internet may connect to NWI's server via anonymous ftp and download available NWI digital wetlands data in Arc Export and Shapefile formats. Indexes for NWI hardcopy maps and digital data are also available. Digital wetlands data can be downloaded for 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 arcdata directory for Arc Export data, or change to the shapedata directory for Shapefile data. 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. Sun Model 450 Unix server. Solaris 8 operating system. Arc Export Everything Tape - 8mm 5 gigabytes tar cartridge tape (5 Gb) Non_digital_Form: Hardcopy NWI wetlands maps at various scales, on diazo paper composited with USGS base map. Andrew Paul U.S. Fish & Wildlife Service, National Wetlands Inventory Center Cartographer Mailing and Physical address

9720 Executive Center Drive

St. Petersburg Florida 33702 727-570-5400 727-570-5420 Andrew_Paul@fws.gov FGDC Content Standards for Digital FGDC-STD-001-1998 Geospatial Metadata {DA879E83-39FA-4A31-9788-65E67F39D469}2005060215213500FALSE20050602153845002005060215384500Metadata imported.C:\DOCUME~1\SBD~1.PAS\LOCALS~1\Temp\xml450.tmp2005060215213500Microsoft Windows 2000 Version 5.0 (Build 2195) Service Pack 4; ESRI ArcCatalog 9.0.0.535enREQUIRED: A brief narrative summary of the data set.REQUIRED: A summary of the intentions with which the data set was developed.REQUIRED: The name of an organization or individual that developed the data set.REQUIRED: The date when the data set is published or otherwise made available for release.pa_nwi_pvector digital data\\SUNWLM\D$\nwi_update\finished_dd\pa_nwi_p.shpREQUIRED: The basis on which the time period of content information is determined.REQUIRED: The year (and optionally month, or month and day) for which the data set corresponds to the ground.REQUIRED: The state of the data set.REQUIRED: The frequency with which changes and additions are made to the data set after the initial data set is completed.-80.519349-74.68958342.26947939.719860-80.519349-74.68958339.71986042.269479REQUIRED: Reference to a formally registered thesaurus or a similar authoritative source of theme keywords.REQUIRED: Common-use word or phrase used to describe the subject of the data set.REQUIRED: Restrictions and legal prerequisites for accessing the data set.REQUIRED: Restrictions and legal prerequisites for using the data set after access is granted.ShapefileMicrosoft Windows 2000 Version 5.0 (Build 2195) Service Pack 4; ESRI ArcCatalog 9.0.0.535pa_nwi_p-80.519349-74.68958342.26947939.719861-80.519349-74.68958342.26947939.719861enFGDC Content Standards for Digital Geospatial MetadataFGDC-STD-001-1998local timeREQUIRED: The person responsible for the metadata information.REQUIRED: The organization responsible for the metadata information.REQUIRED: The mailing and/or physical address for the organization or individual.REQUIRED: The city of the address.REQUIRED: The state or province of the address.REQUIRED: The ZIP or other postal code of the address.REQUIRED: The telephone number by which individuals can speak to the organization or individual.20050602http://www.esri.com/metadata/esriprof80.htmlESRI Metadata ProfileISO 19115 Geographic Information - MetadataDIS_ESRI1.0datasetDownloadable Data186.039186.039002file://\\SUNWLM\D$\nwi_update\finished_dd\pa_nwi_p.shpLocal Area Network186.039ShapefileVectorSimplePolygonFALSE165202TRUEFALSEG-polygon165202GCS_North_American_1983Decimal degrees0.0000000.000000North American Datum of 1983Geodetic Reference System 806378137.000000298.257222GCS_North_American_1983165202pa_nwi_pFeature Class165202FIDFIDOID400Internal feature number.ESRISequential unique whole numbers that are automatically generated.ShapeShapeGeometry000Feature geometry.ESRICoordinates defining the features.AREAAREANumber193PERIMETERPERIMETERNumber193YORKHA_P_YORKHA_P_Number9YORKHA_P_IYORKHA_P_INumber9ATTRIBUTEATTRIBUTEString20ACRESACRESNumber19320050602