National Wetlands Inventory (NWI) Minnesota
Metadata:
- Identification_Information:
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- Citation:
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- Citation_Information:
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- Originator: U.S. Fish & Wildlife Service, National Wetlands Inventory
- Publication_Date: 1988-1992
- Title: National Wetlands Inventory (NWI) Minnesota
- Publication_Information:
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- Publication_Place: St.Petersburg, Florida
- Publisher: U.S. Fish & Wildlife Service, National Wetlands Inventory
- Description:
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- Abstract: NWI digital data files are records of wetlands location and classification as defined by the U.S. Fish & Wildlife Service (USFWS). This dataset is 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 original 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 (USFWS) National Wetlands Inventory project. Minnesota data were downloaded from USFWS anonymous ftp server (enterprise.nwi.fws.gov) and processed into Arc/Info. Portions of 8 7.5 minute quadrangles have some data missing (photography unavailable at time of publication).
- 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.
- Supplemental_Information: This project specific metadata document has been enhanced from the original NWI metadata produced by Linda Shaffer of the USFWS. This is version 1.1 of the NWI metadata documentation. This file is also found at http://www.lmic.state.mn.us/msic/meta/nwimeta.html.
- Time_Period_of_Content:
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- Time_Period_Information:
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- Range_of_Dates/Times:
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- Beginning_Date: 197410
- Ending_Date: 198805
- Currentness_Reference: source photography date (See nwiphoto.txt for complete listing)
- Status:
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- Progress: Complete
- Maintenance_and_Update_Frequency: Irregular
- Spatial_Domain:
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- Bounding_Coordinates:
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- West_Bounding_Coordinate: -97.5
- East_Bounding_Coordinate: -89
- North_Bounding_Coordinate: 49.5
- South_Bounding_Coordinate: 43.475
- Keywords:
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- Theme:
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- Theme_Keyword_Thesaurus: LMIC_KEYWORDS
- Theme_Keyword: wetlands
- Theme_Keyword: hydrography
- Theme_Keyword: land cover
- Theme_Keyword: surface and manmade features
- Place:
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- Place_Keyword_Thesaurus: None
- Place_Keyword: Minnesota
- 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. NWI information is not intended to be used as a precise locator of wetland boundaries, for site specific planning or management, or for regulatory purposes.
- Point_of_Contact:
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- Contact_Information:
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- Contact_Organization_Primary:
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- Contact_Organization: U.S. Fish & Wildlife Service, National Wetlands Inventory
- Contact_Position: Chief Cartographer
- Contact_Address:
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- Address_Type: mailing and physical address
- Address: 9720 Executive Center Drive
- City: St.Petersburg
- State_or_Province: Florida
- Postal_Code: 33702
- Contact_Voice_Telephone: (813) 570-5411
- Data_Set_Credit: USFWS and the Minnesota Department of Natural Resources (DNR), through the Minnesota Legislative Commission on Minnesota Resources (LCMR), supplied the funding for the digital data capture. DNR Division of Waters and the USFWS Region 3 Office in St. Paul have been helpful in the development of the final LEG_NWI and especially with the translation to Circular 39 codes. DNR Division of Waters will be the maintainer of the data. Corrections should be sent to the NWI Data Base Coordinator at DNR Division of Waters.
- Native_Data_Set_Environment: USFWS-NWI uses Wetlands Analytical Mapping System (WAMS) software version 4.06 running under the SunOS 4.x operating system to digitize wetlands information. Minnesota Land Management Information Center (MnLMIC) uses Arc/Info software version 7.0.4 running under the SunOS 5.5 operating system to process the Digital Line Graph (DLG) data distributed by USFWS.
- Data_Quality_Information:
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- Attribute_Accuracy:
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- 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.
- 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).
- 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. Eight 7.5 minute quadrangles have missing data (some maps state that photography is unavailable), they include: Hancock NW (3211), Hancock (3212), Clontarf North (3213) & Lake Hassel (3214) in Willmar 100K block; Artichoke Lake NW (3209) & Dry Wood Lake (3210) in Milbank 100K block; Blue Grass (2318) in Detroit Lakes 100K block; and Mineral Center OE S (1360) in Grand Portage 100K block. 7.5 minute quadrangles along the Minnesota border with the exception of Wisconsin contain data from adjacent states.
- Positional_Accuracy:
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- Horizontal_Positional_Accuracy:
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- Horizontal_Positional_Accuracy_Report: Horizontal positional accuracy for the digital data is tested by visual comparison of the source with hard copy plots. Enhanced digital data is also snapped to existing quadrangle boundaries and is compared to adjacent files.
- Lineage:
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- Source_Information:
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- Source_Citation:
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- Citation_Information:
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- Originator: U.S. Geological Survey (USGS)
- Publication_Date: 1979-1988
- Title: National High Altitude Program (NHAP)
- Geospatial_Data_Presentation_Form: remote-sensing image
- Source_Scale_Denominator: 58000,80000
- Type_of_Source_Media: color infrared and black and white aerial photography film
- Source_Time_Period_of_Content:
-
- Time_Period_Information:
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- Range_of_Dates/Times:
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- Beginning_Date: 197906
- Ending_Date: 198805
- Source_Currentness_Reference: source photography date
- Source_Citation_Abbreviation: NWI1a
- Source_Contribution: aerial photo from which wetlands information, both spatial and attribute are interpreted
- Source_Information:
-
- Source_Citation:
-
- Citation_Information:
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- Originator: U.S. Geological Survey (USGS)
- Publication_Date: 1990-1996
- Title: National Aerial Photography Program (NAPP)
- Geospatial_Data_Presentation_Form: remote-sensing image
- Source_Scale_Denominator: 40000
- Type_of_Source_Media: black and white aerial photograph film transparency
- Source_Time_Period_of_Content:
-
- Time_Period_Information:
-
- Range_of_Dates/Times:
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- Beginning_Date: 1990
- Ending_Date: 1996
- Source_Currentness_Reference: source photography date
- Source_Citation_Abbreviation: NWI1b
- Source_Contribution: aerial photo from which wetlands information, both spatial and attribute are interpreted
- Source_Information:
-
- Source_Citation:
-
- Citation_Information:
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- Originator: U.S. Geological Survey
- Publication_Date: 1955-1996
- Title: topographic map
- Geospatial_Data_Presentation_Form: map
- Publication_Information:
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- Publication_Place: Reston,VA
- Publisher: U.S. Geological Survey
- Source_Scale_Denominator: 24000
- Type_of_Source_Media: stable-base material
- Source_Time_Period_of_Content:
-
- Time_Period_Information:
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- Range_of_Dates/Times:
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- Beginning_Date: 1955
- Ending_Date: 1996
- Source_Currentness_Reference: publication date
- Source_Citation_Abbreviation: NWI2
- Source_Contribution: base map on which wetlands delineation's are registered
- Source_Information:
-
- Source_Citation:
-
- Citation_Information:
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- Originator: U.S. Fish & Wildlife Service, National Wetlands Inventory
- Publication_Date: 1988-1992
- Title: NWI map
- Geospatial_Data_Presentation_Form: map
- Publication_Information:
-
- Publication_Place: St.Petersburg,Florida
- Publisher: U.S. Fish & Wildlife Service, National Wetlands Inventory
- Source_Scale_Denominator: 24000
- Type_of_Source_Media: stable-base material
- Source_Time_Period_of_Content:
-
- Time_Period_Information:
-
- Range_of_Dates/Times:
-
- Beginning_Date: 1988
- Ending_Date: 1992
- Source_Currentness_Reference: publication date
- Source_Citation_Abbreviation: NWI3
- Source_Contribution: source material from which compiled wetlands location and classification are digitized
- Process_Step:
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- Process_Description: NWI maps are compiled through manual photointerpretation of NHAP 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.
- Source_Used_Citation_Abbreviation: NWI1
- Source_Used_Citation_Abbreviation: NWI2
- Process_Date: 1988-1992
- Source_Produced_Citation_Abbreviation: NWI3
- Process_Step:
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- 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.
- Source_Used_Citation_Abbreviation: NWI3
- Process_Date: 1988-1992
- Source_Produced_Citation_Abbreviation: NWI4
- Process_Step:
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- Process_Description: DLG data was downloaded from NWI ftp server for all of Minnesota. Files were uncompressed, untarred and archived in Minnesota Spatial Data Archive (MSDA). Wetland codes for each 7.5 minute quadrangle were loaded into a statewide NWI code list from which a unique code number was assigned for each wetland type. Wetland code data from FWS were incorrectly coded into all capital letters on the following 100K sheets: Bigfork, Duluth, Ely, Milbank, Pokegama Lake, Vermilion Lake & Willmar. These data were changed into the correct upper and lower case codes. The DLG files were translated into Arc/Info double precision net (polygon/line) and point coverages and the Minnesota unique wetland code number was moved into the data set. (See nwi2arc.aml). Labelerrors in the net covers were cleaned up if any existed. The coverages were then snapped to an existing 7.5 minute quadrangle coverage and corner tics were added to create a seamless data base. Additional locational attributes were added and projection information copied into each coverage. (See nwiproc.aml). Coding and positional discrepancies between 7.5 minute quadrangles were identified and fixed. (See nwiatt.aml). 7.5 minute quadrangles in Iowa and Canada that contain small areas of Minnesota NWI data were merged into adjacent 7.5 minute quadrangles. The following 100K sheets have such data: Austin, Albert Lea, Hallock & Cavalier. The quads from Charles City and Mason City that were merged into Albert Lea and Austin quads are 4827-4836. Final NWI data was summarized by type (point,line & polygon), projection information added and the files were exported for archive purposes. (See nwiexp.aml).
- Source_Used_Citation_Abbreviation: NWI4
- Process_Date: 1995-1996
- Source_Produced_Citation_Abbreviation: NWI/LMIC NAD27
- Process_Step:
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- Process_Description: The data was transformed into single precision shifted NAD27 coverages for use in PC Arc/Info and were then exported for the MSDA.
- Source_Used_Citation_Abbreviation: NWI/LMIC NAD27
- Process_Date: 1995-1996
- Source_Produced_Citation_Abbreviation: NWI/LMIC SHIFT
- Process_Step:
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- Process_Description: The data was projected into double precision NAD83 coordinates, but the 7.5 minute quadrangle frame still has the NAD27 boundary. The files archived into the MSDA.
- Source_Used_Citation_Abbreviation: NWI/LMIC NAD27
- Process_Date: 1995-1996
- Source_Produced_Citation_Abbreviation: NWI/LMIC NAD83
- Spatial_Data_Organization_Information:
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- Direct_Spatial_Reference_Method: Vector
- Spatial_Reference_Information:
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- Horizontal_Coordinate_System_Definition:
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- Planar:
-
- Grid_Coordinate_System:
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- Grid_Coordinate_System_Name: Universal Transverse Mercator
- Universal_Transverse_Mercator:
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- UTM_Zone_Number: 15
- Transverse_Mercator:
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- Scale_Factor_at_Central_Meridian: 0.9996
- Longitude_of_Central_Meridian: -93.0
- Latitude_of_Projection_Origin: 0.0
- False_Easting: 500000.0
- False_Northing: 0.0
- Planar_Coordinate_Information:
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- Planar_Coordinate_Encoding_Method: coordinate pair
- Coordinate_Representation:
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- Abscissa_Resolution: 0.61
- Ordinate_Resolution: 0.61
- Planar_Distance_Units: meters
- Geodetic_Model:
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- Horizontal_Datum_Name: North American Datum of 1983
- Ellipsoid_Name: Geodetic Reference System 80
- Semi-major_Axis: 6378137
- Denominator_of_Flattening_Ratio: 298.25722210088
- Entity_and_Attribute_Information:
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- Detailed_Description:
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- Entity_Type:
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- Entity_Type_Label: NWDPxxxx.PAT
- Entity_Type_Definition: The Polygon Attribute Table (PAT). Where NWDP is the net (polygon/line) cover prefix and xxxx is the four digit 7.5 minute quadrangle identifier (MINN_Q024_CODE).
- Entity_Type_Definition_Source: None
- Attribute:
-
- Attribute_Label: AREA
- Attribute_Definition: Area of individual polygon
- Attribute_Definition_Source: None
- Attribute_Domain_Values:
-
- Unrepresentable_Domain: Unknown domain.
- Attribute_Units_of_Measure: ment: square meters
- Attribute:
-
- Attribute_Label: PERIMETER
- Attribute_Definition: Perimeter of individual polygon. Total length of arcs comprising individual polygon.
- Attribute_Definition_Source: None
- Attribute_Domain_Values:
-
- Unrepresentable_Domain: Unknown domain.
- Attribute_Units_of_Measure: ment: meters
- Attribute:
-
- Attribute_Label: NWDPxxxx#
- Attribute_Definition: Sequential order of polygons. An internal sequence necessary for Arc/Info.
- Attribute_Definition_Source: None
- Attribute_Domain_Values:
-
- Unrepresentable_Domain: Unknown domain.
- Attribute:
-
- Attribute_Label: NWDPxxxx-ID
- Attribute_Definition: Numbering sequence for polygons within each cover used by Arc/Info.
- Attribute_Definition_Source: None
- Attribute_Domain_Values:
-
- Unrepresentable_Domain: Unknown domain.
- Attribute:
-
- Attribute_Label: MINN_Q024_CODE
- Attribute_Definition: Unique number for each 7.5 minute quadrangle in Minnesota based on a two digit row and two digit column format.
- Attribute_Definition_Source: Q024 documentation list.
- Attribute_Domain_Values:
-
- Codeset_Domain:
-
- Codeset_Name: LEG_Q024
- Codeset_Source: Minnesota Land Management Information Center
- Attribute:
-
- Attribute_Label: NWI_POLY_CODE
- Attribute_Definition: Unique numbering sequence for polygons. Together with the MINN_Q024_CODE each NWI polygon in Minnesota is uniquely identified.
- Attribute_Definition_Source: None
- Attribute_Domain_Values:
-
- Unrepresentable_Domain: Unknown domain.
- Attribute:
-
- Attribute_Label: NWI_CODE
- Attribute_Definition: Unique code for each occurrence of a wetland type within Minnesota based on the original wetland types from USFWS.
- Attribute_Definition_Source: None
- Attribute_Domain_Values:
-
- Codeset_Domain:
-
- Codeset_Name: LEG_NWI
- Codeset_Source: Minnesota Land Management Information Center
- Attribute:
-
- Attribute_Label: ACRES
- Attribute_Definition: Acres of each individual polygon as computed from the AREA field. Equation is ACRES=AREA/4046.8717
- Attribute_Definition_Source: None
- Attribute_Domain_Values:
-
- Unrepresentable_Domain: Unknown domain.
- Attribute_Units_of_Measure: acres
- Entity_Type:
-
- Entity_Type_Label: NWDPxxxx.AAT
- Entity_Type_Definition: The Arc Attribute Table (AAT). Where NWDP is the line cover prefix and xxxx is the four digit 7.5 minute quadrangle identifier (MINN_Q024_CODE).
- Entity_Type_Definition_Source: None
- Attribute:
-
- Attribute_Label: FNODE#
- Attribute_Definition: From node number.
- Attribute_Definition_Source: None
- Attribute_Domain_Values:
-
- Unrepresentable_Domain: Unknown domain.
- Attribute:
-
- Attribute_Label: TNODE#
- Attribute_Definition: To node number.
- Attribute_Definition_Source: None
- Attribute_Domain_Values:
-
- Unrepresentable_Domain: Unknown domain.
- Attribute:
-
- Attribute_Label: LPOLY#
- Attribute_Definition: Left polygon number.
- Attribute_Definition_Source: None
- Attribute_Domain_Values:
-
- Unrepresentable_Domain: Unknown domain.
- Attribute:
-
- Attribute_Label: RPOLY#
- Attribute_Definition: Right polygon number.
- Attribute_Definition_Source: None
- Attribute_Domain_Values:
-
- Unrepresentable_Domain: Unknown domain.
- Attribute:
-
- Attribute_Label: LENGTH
- Attribute_Definition: Length of individual arc (line)
- Attribute_Definition_Source: None
- Attribute_Domain_Values:
-
- Unrepresentable_Domain: Unknown domain.
- Attribute_Units_of_Measure: ment: meters
- Attribute:
-
- Attribute_Label: NWDPxxxx#
- Attribute_Definition: Sequential order of arcs. An internal sequence necessary for Arc/Info.
- Attribute_Definition_Source: None
- Attribute_Domain_Values:
-
- Unrepresentable_Domain: Unknown domain.
- Attribute:
-
- Attribute_Label: NWDPxxxx-ID
- Attribute_Definition: Numbering sequence for arcs within each cover used by Arc/Info.
- Attribute_Definition_Source: None
- Attribute_Domain_Values:
-
- Unrepresentable_Domain: Unknown domain.
- Attribute:
-
- Attribute_Label: MINN_Q024_CODE
- Attribute_Definition: Unique number for each 7.5 minute quadrangle in Minnesota based on a two digit row and two digit column format.
- Attribute_Definition_Source: Q024 documentation list.
- Attribute_Domain_Values:
-
- Codeset_Domain:
-
- Codeset_Name: LEG_Q024
- Codeset_Source: Minnesota Land Management Information Center
- Attribute:
-
- Attribute_Label: NWI_LINE_CODE
- Attribute_Definition: Unique numbering sequence for arcs. Together with the MINN_Q024_CODE each NWI arc in Minnesota is uniquely identified.
- Attribute_Definition_Source: None
- Attribute_Domain_Values:
-
- Unrepresentable_Domain: Unknown domain.
- Attribute:
-
- Attribute_Label: NWI_CODE
- Attribute_Definition: Unique code for each occurrence of a wetland type within Minnesota based on the original wetland types from USFWS.
- Attribute_Definition_Source: None
- Attribute_Domain_Values:
-
- Codeset_Domain:
-
- Codeset_Name: LEG_NWI
- Codeset_Source: Minnesota Land Management Information Center
- Attribute:
-
- Attribute_Label: MILES
- Attribute_Definition: Miles of each individual arc as computed from the LENGTH field. Equation is MILES=LENGTH/1609.344
- Attribute_Definition_Source: None
- Attribute_Domain_Values:
-
- Unrepresentable_Domain: Unknown domain.
- Attribute_Units_of_Measure: ment: miles
- Entity_Type:
-
- Entity_Type_Label: NWDXxxxx.PAT
- Entity_Type_Definition: The Point Attribute Table (PAT). Where NWDX is the point cover prefix and xxxx is the four digit 7.5 minute quadrangle identifier (MINN_Q024_CODE).
- Entity_Type_Definition_Source: None
- Attribute:
-
- Attribute_Label: AREA
- Attribute_Definition: Area of individual point
- Attribute_Definition_Source: None
- Attribute_Domain_Values:
-
- Enumerated_Domain:
-
- Enumerated_Domain_Value: 0
- Enumerated_Domain_Value_Definition: Area for a point is always zero (0).
- Enumerated_Domain_Value_Definition_Source: None
- Attribute:
-
- Attribute_Label: PERIMETER
- Attribute_Definition: Perimeter of individual point.
- Attribute_Definition_Source: None
- Attribute_Domain_Values:
-
- Enumerated_Domain:
-
- Enumerated_Domain_Value: 0
- Enumerated_Domain_Value_Definition: Perimeter for a point is always zero (0).
- Enumerated_Domain_Value_Definition_Source: None
- Attribute:
-
- Attribute_Label: NWDPxxxx#
- Attribute_Definition: Sequential order of points. An internal sequence necessary for Arc/Info.
- Attribute_Definition_Source: None
- Attribute_Domain_Values:
-
- Unrepresentable_Domain: Unknown domain.
- Attribute:
-
- Attribute_Label: NWDPxxxx-ID
- Attribute_Definition: Unique numbering sequence for points within each cover used by Arc/Info.
- Attribute_Definition_Source: None
- Attribute_Domain_Values:
-
- Unrepresentable_Domain: Unknown domain.
- Attribute:
-
- Attribute_Label: MINN_Q024_CODE
- Attribute_Definition: Unique number for each 7.5 minute quadrangle in Minnesota based on a two digit row and two digit column format.
- Attribute_Definition_Source: Q024 documentation list.
- Attribute_Domain_Values:
-
- Codeset_Domain:
-
- Codeset_Name: LEG_Q024
- Codeset_Source: Minnesota Land Management Information Center
- Attribute:
-
- Attribute_Label: NWI_PNT_CODE
- Attribute_Definition: Unique numbering sequence for points. Together with the MINN_Q024_CODE each NWI point in Minnesota is uniquely identified.
- Attribute_Definition_Source: None
- Attribute_Domain_Values:
-
- Unrepresentable_Domain: Unknown domain.
- Attribute:
-
- Attribute_Label: NWI_CODE
- Attribute_Definition: Unique code for each occurrence of a wetland type within Minnesota based on the original wetland types from USFWS.
- Attribute_Definition_Source: None
- Attribute_Domain_Values:
-
- Codeset_Domain:
-
- Codeset_Name: LEG_NWI
- Codeset_Source: Minnesota Land Management Information Center
- Attribute:
-
- Attribute_Label: ACRES
- Attribute_Definition: Acres of each individual polygon as computed from the AREA field. Equation is ACRES=AREA/4046.8717
- Attribute_Definition_Source: None
- Attribute_Domain_Values:
-
- Unrepresentable_Domain: Unknown domain.
- Attribute_Units_of_Measure: ment: acres
- Entity_Type:
-
- Entity_Type_Label: LEG_NWI
- Entity_Type_Definition: The master legend file for NWI codes in Minnesota. All Arc/Info coverages have an item NWI_CODE that can be related to the master legend file.
- Entity_Type_Definition_Source: None
- Attribute:
-
- Attribute_Label: NWI_CODE
- Attribute_Definition: Unique code for each occurrence of a wetland type within Minnesota based on the original wetland types from USFWS. Contains 1,856 unique codes.
- Attribute_Definition_Source: None
- Attribute_Domain_Values:
-
- Range_Domain:
-
- Range_Domain_Minimum: 1
- Range_Domain_Maximum: 9999
- Attribute:
-
- Attribute_Label: FREQ_Q024
- Attribute_Definition: The total number of 7.5 minute quadrangles that contain the given MAP_WET_C code. Note that some quadrangles have been merged in the final version to keep the total number of files low. An example would be xxxx
- Attribute_Definition_Source: None
- Attribute_Domain_Values:
-
- Range_Domain:
-
- Range_Domain_Minimum: 1
- Range_Domain_Maximum: 1742
- Attribute:
-
- Attribute_Label: MAP_WET_C
- Attribute_Definition: The mapped wetland code as it appears on the NWI published maps. 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).
- 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.
- Attribute_Domain_Values:
-
- Codeset_Domain:
-
- Codeset_Name: valid wetland classification code list. The file LEG_NWI contains all wetland types found in Minnesota.
- Codeset_Source: Photointerpretation Conventions for the National Wetlands Inventory, March 1990
- Attribute:
-
- Attribute_Label: FIN_WET_C
- Attribute_Definition: Same as attribute label MAP_WET_C only does not represent the final NWI map. It is essentially a cleaned up version based on discussion between Minnesota Department of Natural Resources (MnDNR) staff and local USFWS staff. Some codes were not used uniformly throughout Minnesota and other codes changed over time.
- Attribute_Definition_Source: Correspondence with Erv Berglund (MnDNR) and Nicholas Rowse (USFWS) 1995 and 1996.
- Attribute_Domain_Values:
-
- Codeset_Domain:
-
- Codeset_Name: LEG_NWI
- Codeset_Source: Photointerpretation Conventions for the National Wetlands Inventory, March 1990
- Attribute:
-
- Attribute_Label: MINN_Q024_CODE
- Attribute_Definition: The unique 7.5 minute quadrangle number where the given MAP_WET_C code can be found as an example.
- Attribute_Definition_Source: None
- Attribute_Domain_Values:
-
- Codeset_Domain:
-
- Codeset_Name: LEG_Q024
- Codeset_Source: Minnesota Land Management Information Center
- Attribute:
-
- Attribute_Label: SYS_C
- Attribute_Definition: The wetland System code as it pertains to FIN_WET_C. Marine and Estuarine systems not found in Minnesota.
- 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.
- Attribute_Domain_Values:
-
- Codeset_Domain:
-
- Codeset_Name: LEG_SYSTEM
- Codeset_Source: Photointerpretation Conventions for the National Wetlands Inventory, March 1990
- Attribute_Domain_Values:
-
- Enumerated_Domain:
-
- Enumerated_Domain_Value: L
- Enumerated_Domain_Value_Definition: Lacustrine (lakes and deep ponds) - Lacustrine System include wetlands and deepwater habitats with all of the following three characteristics: 1) Situated in a topographic depression or a dammed river channel; 2)Lacking trees, shrubs, persistent emergents, emergent mosses or lichens with greater than 30 percent areal coverage; 3)Total area exceeds 8 hectares (20 acres). Basins or catchments less than 8 hectares in size are included if they have at least one of the following characteristics: A wave-formed or bedrock feature forms all or part of the shoreline boundary; or the catchment has at low water a depth greater than 2 meters (6 feet) in the deepest part of the basin.
- Enumerated_Domain_Value_Definition_Source: Santos, Kim M. and Joan E. Gauster. 1993. Users Guide to National Wetlands Inventory Maps (Region 3) and to "Classification of Wetlands and Deepwater Habitats of the United States"
- Enumerated_Domain_Value: P
- Enumerated_Domain_Value_Definition: Palustrine (shallow ponds, marshes, swamps and sloughs) - Palustrine Systems include all nontidal wetlands dominated by trees, shrubs, persistent emergents, emergent mosses or lichens, and all such wetlands that occur in tidal areas where salinity due to ocean-derived salts is below 0.5 ppt. Wetlands lacking such vegetation are also included if they exhibit all of the following four characteristics: 1)Are less than 8 hectares (20 acres); 2)Do not have an active wave-formed or bedrock shoreline feature; 3)Have at low water a depth less than 2 meters (6 feet) in the deepest part of the basin; 4)Have a salinity due to ocean-derived salts of less than 0.5 ppt. All water bodies that are less than 8 hectares (20 acres) in size are considered to be in the Palustrine System unless depth information is available, or unless an active wave-formed or bedrock shoreline is visible.
- Enumerated_Domain_Value_Definition_Source: Santos, Kim M. and Joan E. Gauster. 1993. Users Guide to National Wetlands Inventory Maps (Region 3) and to "Classification of Wetlands and Deepwater Habitats of the United States"
- Enumerated_Domain_Value: R
- Enumerated_Domain_Value_Definition: Riverine (rivers, creeks and streams) - Riverine Systems are contained in natural or artificial channels periodically or continuously containing flowing water. Upland islands or Palustrine wetlands may occur in the channel, but they are not part of the Riverine System.
- Enumerated_Domain_Value_Definition_Source: Santos, Kim M. and Joan E. Gauster. 1993. Users Guide to National Wetlands Inventory Maps (Region 3) and to "Classification of Wetlands and Deepwater Habitats of the United States"
- Enumerated_Domain_Value: U
- Enumerated_Domain_Value_Definition: Upland - Primarily represents upland areas, but may include unclassified wetlands such as non photo-identifiable area and/or unintentional omissions.
- Enumerated_Domain_Value_Definition_Source: Santos, Kim M. and Joan E. Gauster. 1993. Users Guide to National Wetlands Inventory Maps (Region 3) and to "Classification of Wetlands and Deepwater Habitats of the United States"
- Attribute:
-
- Attribute_Label: SUBSYS_C
- Attribute_Definition: The wetland Subsystem code as it pertains to FIN_WET_C.
- 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.
- Attribute_Domain_Values:
-
- Codeset_Domain:
-
- Codeset_Name: LEG_SUBSYS
- Codeset_Source: Photointerpretation Conventions for the National Wetlands Inventory, March 1990
- Attribute_Domain_Values:
-
- Enumerated_Domain:
-
- Enumerated_Domain_Value: L1
- Enumerated_Domain_Value_Definition: Limnetic - Extends outward from Littoral boundary and includes deepwater habitats within the Lacustrine System.
- Enumerated_Domain_Value_Definition_Source: Santos, Kim M. and Joan E. Gauster. 1993. Users Guide to National Wetlands Inventory Maps (Region 3) and to "Classification of Wetlands and Deepwater Habitats of the United States"
- Enumerated_Domain_Value: L2
- Enumerated_Domain_Value_Definition: Littoral - Extends from shoreward boundary to 2 meters (6 feet) below annual low water or to the maximum extent of non-persistent emergents, if these grow at greater than 2 meters.
- Enumerated_Domain_Value_Definition_Source: Santos, Kim M. and Joan E. Gauster. 1993. Users Guide to National Wetlands Inventory Maps (Region 3) and to "Classification of Wetlands and Deepwater Habitats of the United States"
- Enumerated_Domain_Value: R1
- Enumerated_Domain_Value_Definition: Lower Perennial - This Subsystem is characterized by a low gradient and slow water velocity. There is no tidal influence, and some water flows throughout the year. The substrate consists mainly of sand and mud. The floodplain is well developed. Oxygen deficits may sometimes occur.
- Enumerated_Domain_Value_Definition_Source: Santos, Kim M. and Joan E. Gauster. 1993. Users Guide to National Wetlands Inventory Maps (Region 3) and to "Classification of Wetlands and Deepwater Habitats of the United States"
- Enumerated_Domain_Value: R2
- Enumerated_Domain_Value_Definition: Upper Perennial - This Subsystem is characterized by a high gradient and fast water velocity. There is no tidal influence, and some water flows throughout the year. The substrate consists of rock, cobbles, or gravel with occasional patches of sand. There is very little floodplain development.
- Enumerated_Domain_Value_Definition_Source: Santos, Kim M. and Joan E. Gauster. 1993. Users Guide to National Wetlands Inventory Maps (Region 3) and to "Classification of Wetlands and Deepwater Habitats of the United States"
- Enumerated_Domain_Value: R3
- Enumerated_Domain_Value_Definition: Intermittent - This Subsystem includes channels that contain water only part of the year, but may contain isolated permanent pools when the flow stops.
- Enumerated_Domain_Value_Definition_Source: Santos, Kim M. and Joan E. Gauster. 1993. Users Guide to National Wetlands Inventory Maps (Region 3) and to "Classification of Wetlands and Deepwater Habitats of the United States"
- Enumerated_Domain_Value: R4
- Enumerated_Domain_Value_Definition: Unknown Perennial - This Subsystem designation was created specifically for use when the distinction between lower perennial, upper perennial and tidal cannot be made from aerial photography and no collateral data is available.
- Enumerated_Domain_Value_Definition_Source: Santos, Kim M. and Joan E. Gauster. 1993. Users Guide to National Wetlands Inventory Maps (Region 3) and to "Classification of Wetlands and Deepwater Habitats of the United States"
- Attribute:
-
- Attribute_Label: CLASS1_C, CLASS2_C, SCLASS1_C & SCLASS2_C
- Attribute_Definition: The wetland Class and Subclass code as it pertains to FIN_WET_C. The Class code describes the general appearance of the habitat in terms of either the dominant life form of the vegetation or the physiography and composition of the substrate. Life forms (e.g. trees, shrubs, emergents) are used to define classes because they are easily recognizable, do not change distribution rapidly, and have traditionally been used to classify wetlands. Mixed classes (CLASS2_C) are used as sparingly as possible, under two main conditions: (1) The wetland contains two or more distinct cover types each encompassing at least 30 percent areal coverage of the highest life form, but is too small in size to allow separate delineation of each cover type; and (2) The wetland contains 2 or more classes or subclasses each comprising at least 30 percent areal coverage so evenly interspersed that separate delineation is not possible at the scale of photography used for NWI classification. Mixed subclasses are also allowed and follow the same rules for mixed classes.
- 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.
- Attribute_Domain_Values:
-
- Codeset_Domain:
-
- Codeset_Name: LEG_CLASS, LEG_CLASS1 & LEG_CLASS2 (identical legends) and LEG_SCLASS, LEG_SCLASS1 & LEG_SCLASS2 (identical legends)
- Codeset_Source: Photointerpretation Conventions for the National Wetlands Inventory, March 1990
- Attribute_Domain_Values:
-
- Enumerated_Domain:
-
- Enumerated_Domain_Value: AB
- Enumerated_Domain_Value_Definition: Aquatic Bed - Includes wetlands and deepwater habitats dominated by plants that grow principally on or below the surface of the water for most of the growing season in most years. Subclasses include: AB1 = Algal, AB2 = Aquatic Moss, AB3 = Rooted Vascular, AB4 = Floating Vascular, AB5 = Unknown Submergent & AB6 = Unknown Surface.
- Enumerated_Domain_Value_Definition_Source: Santos, Kim M. and Joan E. Gauster. 1993. Users Guide to National Wetlands Inventory Maps (Region 3) and to "Classification of Wetlands and Deepwater Habitats of the United States"
- Enumerated_Domain_Value: EM
- Enumerated_Domain_Value_Definition: Emergent - Characterized by erect, rooted, herbaceous hydrophytes, excluding mosses and lichens. This vegetation is present for most of the growing season in most years. Subclasses include: EM1 = Persistent (plants that normally remain standing at least until the beginning of the next growing season) & EM2 = Nonpersistent (plants which fall to the surface of the substrate or below the surface of the water at the end of the growing season). Earlier maps may also contain the following subclasses: EM3 = Narrow-leaved Nonpersistent, EM4 = Broad-leaved Nonpersistent, EM5 = Narrow-leaved Persistent & EM6 = Broad-leaved Persistent.
- Enumerated_Domain_Value_Definition_Source: Santos, Kim M. and Joan E. Gauster. 1993. Users Guide to National Wetlands Inventory Maps (Region 3) and to "Classification of Wetlands and Deepwater Habitats of the United States"
- Enumerated_Domain_Value: FO
- Enumerated_Domain_Value_Definition: Forested - Woody vegetation less than 6 meters (20 feet) tall. The species include true shrubs, young trees (saplings) or trees that are small or stunted because of environmental conditions. Subclass determination is based on which type represents more than 50 percent of the areal canopy coverage during the leaf-on period and include: FO1 = Broad-leaved Deciduous, FO2 = Needle-leaved Deciduous, FO3 = Broad-leaved Evergreen, FO4 = Needle-leaved Evergreen, FO5 = Dead, FO6 = Deciduous & FO7 = Evergreen.
- Enumerated_Domain_Value_Definition_Source: Santos, Kim M. and Joan E. Gauster. 1993. Users Guide to National Wetlands Inventory Maps (Region 3) and to "Classification of Wetlands and Deepwater Habitats of the United States"
- Enumerated_Domain_Value: ML
- Enumerated_Domain_Value_Definition: Moss/Lichen - Areas where mosses or lichens cover substrates other than rock and where emergents, shrubs, or trees make up less than 30 percent of the areal cover. Subclasses include: ML1 = Moss & ML2 = Lichen.
- Enumerated_Domain_Value_Definition_Source: Santos, Kim M. and Joan E. Gauster. 1993. Users Guide to National Wetlands Inventory Maps (Region 3) and to "Classification of Wetlands and Deepwater Habitats of the United States"
- Enumerated_Domain_Value: OW
- Enumerated_Domain_Value_Definition: Open Water - Open water, no visible vegetation. Earlier maps used the OW class, while present mapping conventions use the UB class.
- Enumerated_Domain_Value_Definition_Source: Santos, Kim M. and Joan E. Gauster. 1993. Users Guide to National Wetlands Inventory Maps (Region 3) and to "Classification of Wetlands and Deepwater Habitats of the United States"
- Enumerated_Domain_Value: RB
- Enumerated_Domain_Value_Definition: Rock Bottom - Includes all wetlands and deepwater habitats with substrates having areal cover of stones, boulders or bedrock 75 percent or greater and vegetative cover of less than 30 percent. Subclasses include: RB1 = Bedrock & RB2 = Rubble.
- Enumerated_Domain_Value_Definition_Source: Santos, Kim M. and Joan E. Gauster. 1993. Users Guide to National Wetlands Inventory Maps (Region 3) and to "Classification of Wetlands and Deepwater Habitats of the United States"
- Enumerated_Domain_Value: RS
- Enumerated_Domain_Value_Definition: Rocky Shore - High energy shoreline characterized by bedrock, stones or boulders which singly or in combination have an areal cover of 75 percent or more and an areal coverage by vegetation of less than 30 percent. Subclasses include: RS1 = Bedrock & RS2 = Rubble.
- Enumerated_Domain_Value_Definition_Source: Santos, Kim M. and Joan E. Gauster. 1993. Users Guide to National Wetlands Inventory Maps (Region 3) and to "Classification of Wetlands and Deepwater Habitats of the United States"
- Enumerated_Domain_Value: SB
- Enumerated_Domain_Value_Definition: Streambed - Includes all wetland contained within the Intermittent Subsystem of the Riverine System and all channels of the Estuarine System or of the Tidal Subsystem of the Riverine System that are completely dewatered at low tide. Subclasses include: SB1 = Bedrock, SB2 = Rubble, SB3 = Cobble-Gravel, SB4 = Sand, SB5 = Mud, SB6 = Organic & SB7 = Vegetated (pioneer plants).
- Enumerated_Domain_Value_Definition_Source: Santos, Kim M. and Joan E. Gauster. 1993. Users Guide to National Wetlands Inventory Maps (Region 3) and to "Classification of Wetlands and Deepwater Habitats of the United States"
- Enumerated_Domain_Value: SS
- Enumerated_Domain_Value_Definition: Scrub/Shrub - Woody vegetation less than 6 meters (20 feet) tall. The species include true shrubs, young trees (saplings) or trees that are small or stunted because of environmental conditions. Subclass determination is based on which type represents more than 50 percent of the areal canopy coverage during the leaf-on period and include: SS1 = Broad-leaved Deciduous, SS2 = Needle-leaved Deciduous, SS3 = Broad-leaved Evergreen, SS4 = Needle-leaved Evergreen, SS5 = Dead, SS6 = Deciduous (used if deciduous woody vegetation cannot be identified on aerial photography as either Broad-leaved or Needle-leaved) & SS7 = Evergreen (used if evergreen woody vegetation cannot be identified on aerial photography as either Broad-leaved or Needle-leaved).
- Enumerated_Domain_Value_Definition_Source: Santos, Kim M. and Joan E. Gauster. 1993. Users Guide to National Wetlands Inventory Maps (Region 3) and to "Classification of Wetlands and Deepwater Habitats of the United States"
- Enumerated_Domain_Value: UB
- Enumerated_Domain_Value_Definition: Unconsolidated Bottom - Includes all wetlands and deepwater habitats with at least 25 percent cover of particles smaller than stones (less than 6-7 cm.), and a vegetative cover less than 30 percent.
- Enumerated_Domain_Value_Definition_Source: Santos, Kim M. and Joan E. Gauster. 1993. Users Guide to National Wetlands Inventory Maps (Region 3) and to "Classification of Wetlands and Deepwater Habitats of the United States"
- Enumerated_Domain_Value: US
- Enumerated_Domain_Value_Definition: Unconsolidated Shore - Includes all wetland habitats having unconsolidated substrates with less than 75 percent areal cover of stones, boulders or bedrock and less than 30 percent areal cover of vegetation other than pioneering plants. Landforms such as beaches, bars, and flats are included in the Unconsolidated Shore Class.
- Enumerated_Domain_Value_Definition_Source: Santos, Kim M. and Joan E. Gauster. 1993. Users Guide to National Wetlands Inventory Maps (Region 3) and to "Classification of Wetlands and Deepwater Habitats of the United States"
- Attribute:
-
- Attribute_Label: WREG_C
- Attribute_Definition: The wetland Water Regime Modifier code as it pertains to FIN_WET_C. Precise description of hydrologic characteristics requires detailed knowledge of the duration and timing of surface inundation, both yearly and long-term, as well as an understanding of groundwater fluctuations. Because such information is seldom available, the water regimes that, in part, determine characteristic wetland and deepwater plant and animal communities are described here in only general terms. Water regimes are grouped under two major headings, Tidal and Nontidal. The Tidal Water Regime does not occur in Minnesota.
- 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.
- Attribute_Domain_Values:
-
- Codeset_Domain:
-
- Codeset_Name: LEG_WREG
- Codeset_Source: Photointerpretation Conventions for the National Wetlands Inventory, March 1990
- Attribute_Domain_Values:
-
- Enumerated_Domain:
-
- Enumerated_Domain_Value: A
- Enumerated_Domain_Value_Definition: Temporarily Flooded - Surface water present for brief periods during the growing season, but the water table usually lies well below the soil surface. Plants that grow both in uplands and wetlands are characteristic of this water regime.
- Enumerated_Domain_Value_Definition_Source: Santos, Kim M. and Joan E. Gauster. 1993. Users Guide to National Wetlands Inventory Maps (Region 3) and to "Classification of Wetlands and Deepwater Habitats of the United States"
- Enumerated_Domain_Value: B
- Enumerated_Domain_Value_Definition: Saturated - The substrate is saturated to the surface for extended periods during the growing season, but surface water is seldom present.
- Enumerated_Domain_Value_Definition_Source: Santos, Kim M. and Joan E. Gauster. 1993. Users Guide to National Wetlands Inventory Maps (Region 3) and to "Classification of Wetlands and Deepwater Habitats of the United States"
- Enumerated_Domain_Value: C
- Enumerated_Domain_Value_Definition: Seasonally Flooded - Surface water is present for extended periods especially early in the growing season, but is absent by the end of the growing season in most years. The water table after flooding ceases is very variable, extending from saturated to a water table well below the ground surface.
- Enumerated_Domain_Value_Definition_Source: Santos, Kim M. and Joan E. Gauster. 1993. Users Guide to National Wetlands Inventory Maps (Region 3) and to "Classification of Wetlands and Deepwater Habitats of the United States"
- Enumerated_Domain_Value: D
- Enumerated_Domain_Value_Definition: Seasonally Well-drained - Surface water is present for extended periods especially early in the growing season. The water table after flooding ceases falls well below the ground surface. (Not used on all maps.)
- Enumerated_Domain_Value_Definition_Source: Santos, Kim M. and Joan E. Gauster. 1993. Users Guide to National Wetlands Inventory Maps (Region 3) and to "Classification of Wetlands and Deepwater Habitats of the United States"
- Enumerated_Domain_Value: E
- Enumerated_Domain_Value_Definition: Seasonally Saturated - Surface water is present for extended periods especially early in the growing season, and remains saturated near the surface for most of the growing season. (Not used on all maps.)
- Enumerated_Domain_Value_Definition_Source: Santos, Kim M. and Joan E. Gauster. 1993. Users Guide to National Wetlands Inventory Maps (Region 3) and to "Classification of Wetlands and Deepwater Habitats of the United States"
- Enumerated_Domain_Value: F
- Enumerated_Domain_Value_Definition: Semipermanently Flooded - Surface water persists throughout the growing season in most years. When surface water is absent, the water table is usually at or very near the land surface.
- Enumerated_Domain_Value_Definition_Source: Santos, Kim M. and Joan E. Gauster. 1993. Users Guide to National Wetlands Inventory Maps (Region 3) and to "Classification of Wetlands and Deepwater Habitats of the United States"
- Enumerated_Domain_Value: G
- Enumerated_Domain_Value_Definition: Intermittently Exposed - Surface water is present throughout the year except in years of extreme drought.
- Enumerated_Domain_Value_Definition_Source: Santos, Kim M. and Joan E. Gauster. 1993. Users Guide to National Wetlands Inventory Maps (Region 3) and to "Classification of Wetlands and Deepwater Habitats of the United States"
- Enumerated_Domain_Value: H
- Enumerated_Domain_Value_Definition: Permanently Flooded - Water covers the land surface throughout the year in all years.
- Enumerated_Domain_Value_Definition_Source: Santos, Kim M. and Joan E. Gauster. 1993. Users Guide to National Wetlands Inventory Maps (Region 3) and to "Classification of Wetlands and Deepwater Habitats of the United States"
- Enumerated_Domain_Value: J
- Enumerated_Domain_Value_Definition: Intermittently Flooded - The substrate is usually exposed, but surface water is present for variable periods without detectable seasonal periodicity. Weeks, months or even years may intervene between periods of inundation. The dominant plant communities under this regime may change as soil moisture conditions change.
- Enumerated_Domain_Value_Definition_Source: Santos, Kim M. and Joan E. Gauster. 1993. Users Guide to National Wetlands Inventory Maps (Region 3) and to "Classification of Wetlands and Deepwater Habitats of the United States"
- Enumerated_Domain_Value: K
- Enumerated_Domain_Value_Definition: Artificially Flooded - The amount and duration of flooding is controlled by means of pumps or siphons in combination with dikes or dams. Water and waste-water treatment facilities are included in this modifier.
- Enumerated_Domain_Value_Definition_Source: Santos, Kim M. and Joan E. Gauster. 1993. Users Guide to National Wetlands Inventory Maps (Region 3) and to "Classification of Wetlands and Deepwater Habitats of the United States"
- Enumerated_Domain_Value: U
- Enumerated_Domain_Value_Definition: Unknown - The water regime is not known.
- Enumerated_Domain_Value_Definition_Source: Santos, Kim M. and Joan E. Gauster. 1993. Users Guide to National Wetlands Inventory Maps (Region 3) and to "Classification of Wetlands and Deepwater Habitats of the United States"
- Enumerated_Domain_Value: W
- Enumerated_Domain_Value_Definition: Intermittently Flooded/Temporary - Exhibits features of both Intermittently Flooded (J) and Temporary (A) water regimes. (Not used on all maps.)
- Enumerated_Domain_Value_Definition_Source: Santos, Kim M. and Joan E. Gauster. 1993. Users Guide to National Wetlands Inventory Maps (Region 3) and to "Classification of Wetlands and Deepwater Habitats of the United States"
- Enumerated_Domain_Value: Y
- Enumerated_Domain_Value_Definition: Saturated/Semipermanent/Seasonals - Exhibits features of the Saturated (B), Semipermanent (F) and Seasonal (C, D and E) water regimes. (Not used on all maps.)
- Enumerated_Domain_Value_Definition_Source: Santos, Kim M. and Joan E. Gauster. 1993. Users Guide to National Wetlands Inventory Maps (Region 3) and to "Classification of Wetlands and Deepwater Habitats of the United States"
- Enumerated_Domain_Value: Z
- Enumerated_Domain_Value_Definition: Intermittently Exposed/Permanent - Exhibits features of both Intermittently Exposed (G) and Permanent (H) water regimes. (Not used on all maps.)
- Enumerated_Domain_Value_Definition_Source: Santos, Kim M. and Joan E. Gauster. 1993. Users Guide to National Wetlands Inventory Maps (Region 3) and to "Classification of Wetlands and Deepwater Habitats of the United States"
- Attribute:
-
- Attribute_Label: SOILM_C
- Attribute_Definition: The wetland Soil Modifier code as it pertains to FIN_WET_C.
- 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.
- Attribute_Domain_Values:
-
- Codeset_Domain:
-
- Codeset_Name: LEG_SOILM
- Codeset_Source: Photointerpretation Conventions for the National Wetlands Inventory, March 1990
- Attribute_Domain_Values:
-
- Enumerated_Domain:
-
- Enumerated_Domain_Value: g
- Enumerated_Domain_Value_Definition: Organic soil modifier - Sometimes used to indicate peatlands, fens or bogs.
- Enumerated_Domain_Value_Definition_Source: Santos, Kim M. and Joan E. Gauster. 1993. Users Guide to National Wetlands Inventory Maps (Region 3) and to "Classification of Wetlands and Deepwater Habitats of the United States"
- Enumerated_Domain_Value: n
- Enumerated_Domain_Value_Definition: Mineral soils - Sometimes used to indicate the presence of mineral soils as it pertains to soil taxonomy.
- Enumerated_Domain_Value_Definition_Source: Santos, Kim M. and Joan E. Gauster. 1993. Users Guide to National Wetlands Inventory Maps (Region 3) and to "Classification of Wetlands and Deepwater Habitats of the United States"
- Attribute:
-
- Attribute_Label: SMOD1_C & SMOD2_C
- Attribute_Definition: The wetland Special Modifier code as it pertains to FIN_WET_C. Many wetlands or deepwater habitats are man-made, and natural ones have been modified to some degree by the activities of man or beavers. Since the nature of these modifications often greatly influences the character of such habitats, special modifying terms have been included here to emphasize their importance. Modifiers are used singly or in combination wherever they apply to wetlands and deepwater habitats. In Minnesota, there are not more than 2 modifiers used for a given wetland.
- 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.
- Attribute_Domain_Values:
-
- Codeset_Domain:
-
- Codeset_Name: LEG_SMOD, LEG_SMOD1, & LEG_SMOD2 (identical legends)
- Codeset_Source: Photointerpretation Conventions for the National Wetlands Inventory, March 1990
- Attribute_Domain_Values:
-
- Enumerated_Domain:
-
- Enumerated_Domain_Value: b
- Enumerated_Domain_Value_Definition: Beaver - Created or modified by the action of a beaver.
- Enumerated_Domain_Value_Definition_Source: Santos, Kim M. and Joan E. Gauster. 1993. Users Guide to National Wetlands Inventory Maps (Region 3) and to "Classification of Wetlands and Deepwater Habitats of the United States"
- Enumerated_Domain_Value: d
- Enumerated_Domain_Value_Definition: Partly Drained - The water level has been artificially lowered, but the area is still classified as wetland because soil moisture is sufficient to produce hydrophytes.
- Enumerated_Domain_Value_Definition_Source: Santos, Kim M. and Joan E. Gauster. 1993. Users Guide to National Wetlands Inventory Maps (Region 3) and to "Classification of Wetlands and Deepwater Habitats of the United States"
- Enumerated_Domain_Value: f
- Enumerated_Domain_Value_Definition: Farmed - The soil surface has been mechanically or physically altered for production of crops, but hydrophytes will become reestablished if farming is discontinued.
- Enumerated_Domain_Value_Definition_Source: Santos, Kim M. and Joan E. Gauster. 1993. Users Guide to National Wetlands Inventory Maps (Region 3) and to "Classification of Wetlands and Deepwater Habitats of the United States"
- Enumerated_Domain_Value: h
- Enumerated_Domain_Value_Definition: Diked/Impounded - Created or modified by a man-made barrier or dam which obstructs the inflow or outflow of water.
- Enumerated_Domain_Value_Definition_Source: Santos, Kim M. and Joan E. Gauster. 1993. Users Guide to National Wetlands Inventory Maps (Region 3) and to "Classification of Wetlands and Deepwater Habitats of the United States"
- Enumerated_Domain_Value: r
- Enumerated_Domain_Value_Definition: Artificial - Substrates classified as Rock Bottom (RB), Unconsolidated Bottom (UB), Rocky Shore (RS) and Unconsolidated Shore (US) that were emplaced by man using natural or synthetic materials. Jetties and breakwaters are examples of Artificial Rocky Shores.
- Enumerated_Domain_Value_Definition_Source: Santos, Kim M. and Joan E. Gauster. 1993. Users Guide to National Wetlands Inventory Maps (Region 3) and to "Classification of Wetlands and Deepwater Habitats of the United States"
- Enumerated_Domain_Value: s
- Enumerated_Domain_Value_Definition: Spoil - Wetland or deepwater habitat where the substrate is a result of the deposition of spoil materials.
- Enumerated_Domain_Value_Definition_Source: Santos, Kim M. and Joan E. Gauster. 1993. Users Guide to National Wetlands Inventory Maps (Region 3) and to "Classification of Wetlands and Deepwater Habitats of the United States"
- Enumerated_Domain_Value: x
- Enumerated_Domain_Value_Definition: Excavated - Lies within a basin or channel excavated by man. This includes all landcut canals, ditches, dugouts, stockponds, and farm ponds. Some of these categories may also be diked/impounded (h).
- Enumerated_Domain_Value_Definition_Source: Santos, Kim M. and Joan E. Gauster. 1993. Users Guide to National Wetlands Inventory Maps (Region 3) and to "Classification of Wetlands and Deepwater Habitats of the United States"
- Attribute:
-
- Attribute_Label: CIRC39_C
- Attribute_Definition: The Circular 39 Classification outlines a means of classifying the wetland basins of the U.S. It is composed of 20 types of which 8 are found in Minnesota. Four additional types have been defined to completely classify the Minnesota NWI wetlands into Circular 39 types.
- Attribute_Definition_Source: None.
- Attribute_Domain_Values:
-
- Codeset_Domain:
-
- Codeset_Name: LEG_CIRC39
- Codeset_Source: Shaw, Samuel P. and C. Gordon Fredine. 1956. Wetlands of the United States, their extent and their value to waterfowl and other wildlife. Circular 39. Fish and Wildlife Service United States Department of the Interior.
- Attribute_Domain_Values:
-
- Enumerated_Domain:
-
- Enumerated_Domain_Value: 0
- Enumerated_Domain_Value_Definition: No wetland data, usually indicative of line comprising a polygon boundary. NWI_CODE is 9999.
- Enumerated_Domain_Value_Definition_Source: Berglund, Erv and Nicholas Rowse 1996. Conversion from Cowardin Wetland Habitats to Circular 39 Wetland Types in Minnesota.
- Enumerated_Domain_Value: 1
- Enumerated_Domain_Value_Definition: Seasonally flooded basin or flat. Soil is covered with water or is waterlogged during variable seasonal periods but usually is well-drained during much of the growing season. Vegetation varies greatly according to season and duration of flooding: from bottomland hardwoods to herbaceous plants. Note that the term seasonally flooded does not have the same meaning in Circular 39 and NWI.
- Enumerated_Domain_Value_Definition_Source: Minnesota Department of Natural Resources, Division of Waters. 1996. Wetland Types and Definitions in Minnesota.
- Enumerated_Domain_Value: 2
- Enumerated_Domain_Value_Definition: Wet meadow. Soil is usually without standing water during most of the growing season but is waterlogged within at least a few inches of the surface. Meadows may fill shallow basins, sloughs, or farmland sags, or these meadows may border shallow marshes on the landward side. Vegetation includes grasses, sedges, rushes and various broad-leaved plants. Other wetland plant community types include low prairies, sedge meadows and calcareous fens.
- Enumerated_Domain_Value_Definition_Source: Minnesota Department of Natural Resources, Division of Waters. 1996. Wetland Types and Definitions in Minnesota.
- Enumerated_Domain_Value: 3
- Enumerated_Domain_Value_Definition: Shallow marsh. Soil is usually waterlogged early during the growing season and may often be covered with as much as 6 inches or more of water. These marshes may nearly fill shallow lake basins or sloughs, or may border deep marshes on the landward side. These are common as seep areas on irrigated lands. Vegetation includes grass, bulrush, spikerush and various other marsh plants such as cattail, arrowhead, pickerelweed and smartweed.
- Enumerated_Domain_Value_Definition_Source: Minnesota Department of Natural Resources, Division of Waters. 1996. Wetland Types and Definitions in Minnesota.
- Enumerated_Domain_Value: 4
- Enumerated_Domain_Value_Definition: Deep marsh. Soil is usually covered with 6" to 3' or more of water during the growing season. These deep marshes may completely fill shallow lake basins, potholes, limestone sinks and sloughs, or they may border open water in such depressions. Vegetation includes cattail, reed, bulrush, spikerush and wildrice. In open areas, pondweed, naiad, coontail, water-milfoil, waterweed, duckweed, waterlily or spatterdock may occur.
- Enumerated_Domain_Value_Definition_Source: Minnesota Department of Natural Resources, Division of Waters. 1996. Wetland Types and Definitions in Minnesota.
- Enumerated_Domain_Value: 5
- Enumerated_Domain_Value_Definition: Shallow open water. Shallow ponds and reservoirs are included in this type. Water is usually less than 10' deep and fringed by a border of emergent vegetation similar to open areas of Type 4.
- Enumerated_Domain_Value_Definition_Source: Minnesota Department of Natural Resources, Division of Waters. 1996. Wetland Types and Definitions in Minnesota.
- Enumerated_Domain_Value: 6
- Enumerated_Domain_Value_Definition: Shrub swamp. Soil is usually waterlogged during the growing season and is often covered with as much as 6" of water. These occur mostly along sluggish streams and occasionally on flood plains. Vegetation includes alder, willow, buttonbush, dogwood and swamp-privet.
- Enumerated_Domain_Value_Definition_Source: Minnesota Department of Natural Resources, Division of Waters. 1996. Wetland Types and Definitions in Minnesota.
- Enumerated_Domain_Value: 7
- Enumerated_Domain_Value_Definition: Wooded swamps. Soil is waterlogged at least to within a few inches of the surface during the growing season and is often covered with as much as 1' of water. These occur mostly along sluggish streams, on old riverine oxbows, on flat uplands and in ancient lake basins. Forest vegetation includes tamarack, arborvitae, black spruce, balsam fir, red maple and black ash. Deciduous swamps frequently support beds of duckweed and smartweed. Other wetland plant community types include lowland hardwood swamps and coniferous swamps.
- Enumerated_Domain_Value_Definition_Source: Minnesota Department of Natural Resources, Division of Waters. 1996. Wetland Types and Definitions in Minnesota.
- Enumerated_Domain_Value: 8
- Enumerated_Domain_Value_Definition: Bogs. Soil is usually waterlogged. These occur mostly in ancient lake basins, on flat uplands and along sluggish streams. Vegetation is woody or herbaceous or both, usually on a spongy covering of mosses. Typical plants are heath shrub, sphagnum moss and sedge. In the North, leatherleaf, Labrador tea, cranberry and cottongrass are often present. Scattered, often stunted, black spruce and tamarack may occur.
- Enumerated_Domain_Value_Definition_Source: Minnesota Department of Natural Resources, Division of Waters. 1996. Wetland Types and Definitions in Minnesota.
- Enumerated_Domain_Value: 80
- Enumerated_Domain_Value_Definition: Municipal and industrial activities, water regime (WREG_C) is K.
- Enumerated_Domain_Value_Definition_Source: Berglund, Erv and Nicholas Rowse 1996. Conversion from Cowardin Wetland Habitats to Circular 39 Wetland Types in Minnesota.
- Enumerated_Domain_Value: 90
- Enumerated_Domain_Value_Definition: Riverine systems, system (SYS_C) is R.
- Enumerated_Domain_Value_Definition_Source: Berglund, Erv and Nicholas Rowse 1996. Conversion from Cowardin Wetland Habitats to Circular 39 Wetland Types in Minnesota.
- Enumerated_Domain_Value: 98
- Enumerated_Domain_Value_Definition: Uplands, system (SYS_C) is U.
- Enumerated_Domain_Value_Definition_Source: Berglund, Erv and Nicholas Rowse 1996. Conversion from Cowardin Wetland Habitats to Circular 39 Wetland Types in Minnesota.
- Enumerated_Domain_Value: 99
- Enumerated_Domain_Value_Definition: Area outside Minnesota, system (SYS_C) is O.
- Enumerated_Domain_Value_Definition_Source: Berglund, Erv and Nicholas Rowse 1996. Conversion from Cowardin Wetland Habitats to Circular 39 Wetland Types in Minnesota.
- Overview_Description:
-
- Entity_and_Attribute_Overview: 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.
- 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.
- Distribution_Information:
-
- Distributor:
-
- Contact_Information:
-
- Contact_Organization_Primary:
-
- Contact_Organization: Minnesota's Bookstore
- Contact_Address:
-
- Address_Type: mailing address
- Address: Ford Building
- Address: 117 University Avenue
- City: St. Paul
- State_or_Province: MN
- Postal_Code: 55155
- Contact_Voice_Telephone: 1 (800) 657-3757
- Contact_Voice_Telephone: (612) 297-3000
- Contact_Facsimile_Telephone: (612) 296-2265
- Distribution_Liability: none
- Standard_Order_Process:
-
- Non-digital_Form: Hardcopy NWI wetlands maps at a scale of 1:24,000 composited with the USGS base map on diazo paper or tear resistant teslin .
- Fees: $5 per diazo paper map or $6 per teslin map.
- Distributor:
-
- Contact_Information:
-
- Contact_Person_Primary:
-
- Contact_Person: Nancy Rader
- Contact_Organization: Minnesota Office of Planning, Land Management Information Center
- Contact_Address:
-
- Address_Type: mailing and physical address
- Address: 330 Centennial Building
- Address: 658 Cedar Street
- City: St. Paul
- State_or_Province: MN
- Postal_Code: 55155
- Contact_Voice_Telephone: (612) 297-3281
- Contact_Facsimile_Telephone: (612) 296-1212
- Contact_Electronic_Mail_Address: nancy.rader@mnplan.state.mn.us
- Resource_Description: NWI/LMIC NAD83
- Distribution_Liability: none
- Standard_Order_Process:
-
- Digital_Form:
-
- Digital_Transfer_Information:
-
- Format_Name: ARCE
- Format_Version_Number: 7.0.4
- Digital_Transfer_Option:
-
- Offline_Option:
-
- Offline_Media: CD-ROM
- Recording_Format: ISO 9660
- Offline_Option:
-
- Offline_Media: 8 mm cartridge tape (2 Gb)
- Recording_Format: tar
- Offline_Option:
-
- Offline_Media: 1/4-inch cartridge tape (150 Mb)
- Recording_Format: tar
- Digital_Form:
-
- Digital_Transfer_Information:
-
- Format_Name: EPPL7
- Format_Version_Number: 3.0
- Digital_Transfer_Option:
-
- Offline_Option:
-
- Offline_Media: CD-ROM
- Recording_Format: ISO 9660
- Fees: $95 for the first 7.5 minute quadrangle and $5 for each additional 7.5 minute quadrangle.
- Ordering_Instructions: Data can also be ordered in NAD27 shifted or unshifted coordinates. Please specify digital format, coordinate system and media type when ordering.
- Turnaround: Usually 2 weeks or less
- Metadata_Reference_Information:
-
- Metadata_Date: 19970402
- Metadata_Contact:
-
- Contact_Information:
-
- Contact_Person_Primary:
-
- Contact_Person: Michael N. Baker
- Contact_Organization: Minnesota Office of Planning, Land Management Information Center
- Contact_Position: GIS Data Administrator
- Contact_Address:
-
- Address_Type: mailing and physical address
- Address: 330 Centennial Building
- Address: 658 Cedar Street
- City: St. Paul
- State_or_Province: MN
- Postal_Code: 55155
- Contact_Voice_Telephone: (612) 297-2754
- Contact_Facsimile_Telephone: (612) 296-1212
- Contact_Electronic_Mail_Address: mike.baker@mnplan.state.mn.us
- Metadata_Standard_Name: FGDC Content Standards for Digital Spatial Metadata
- Metadata_Standard_Version: 19940608
Generated by mp on Wed Apr 2 14:47:43 1997