National Wetlands Inventory

Identification_Information:

Citation:

Citation_Information:

Originator: U.S. Fish and Wildlife Service
Publication_Date: 20210501
Title: National Wetlands Inventory - New Hampshire
Geospatial_Data_Presentation_Form: vector digital data
Series_Information:

Series_Name:

Classification of Wetlands and Deepwater Habitats of the United States. U.S. Department of the Interior, Fish and Wildlife Service, Washington, DC. FWS/OBS-79/31.

Issue_Identification: 79/31

Publication_Information:

Publication_Place: Washington, D.C.
Publisher: U.S. Fish and Wildlife Service

Online_Linkage: http://www.granit.sr.unh.edu/cgi-bin/nhsearch?dset=nwi/nh
Online_Linkage: https://www.fws.gov/wetlands/
Online_Linkage: https://www.fws.gov/wetlands/Data/Mapper.html
Online_Linkage: https://www.fws.gov/wetlands/data/Data-Download.html

Description:

Abstract:

This data set represents the extent, status, and location of National Wetland Inventory wetland mapping projects for NWI Version 2, Surface Waters and Wetlands. Each project polygon contains information on the type and date of imagery used to map the wetlands and a link to a document about specific mapping techniques and habitat information for that project.

Purpose:

The present goal of the Service is to provide the citizens of the United States and its Trust Territories with current geospatially referenced information on the status and extent of wetland mapping.

Supplemental_Information:

This dataset was created to be used as auxillary information to the National Wetlands Inventory - Wetlands polygon dataset, Version 2, Surface Waters and Wetlands.

Although this Federal Geographic Data Committee-compliant metadata file is intended to document the data set in nonproprietary form, as well as in Arc/INFO format, this metadata file may include some Arc/INFO-specific terminology.

Time_Period_of_Content:

Time_Period_Information:

Range_of_Dates/Times:

Beginning_Date: 1977
Ending_Date: 20210501

Currentness_Reference: Publication Date

Status:

Progress: Complete
Maintenance_and_Update_Frequency: In Continuous Increments

Spatial_Domain:

Bounding_Coordinates:

West_Bounding_Coordinate: -72.585000
East_Bounding_Coordinate: -70.585000
North_Bounding_Coordinate: 45.325000
South_Bounding_Coordinate: 42.675000

Keywords:

Theme:

Theme_Keyword_Thesaurus: ISO 19115 Topic Category
Theme_Keyword: environment
Theme_Keyword: inlandWaters
Theme_Keyword: geoscientificInformation
Theme_Keyword: oceans

Theme:

Theme_Keyword_Thesaurus: None
Theme_Keyword: NWI
Theme_Keyword: National Wetlands Inventory
Theme_Keyword: Wetlands
Theme_Keyword: Deepwater habitats
Theme_Keyword: Hydrography
Theme_Keyword: Surface water
Theme_Keyword: Swamps
Theme_Keyword: Marshes
Theme_Keyword: Bogs
Theme_Keyword: Fens

Place:

Place_Keyword_Thesaurus: None
Place_Keyword: United States
Place_Keyword: Northeast
Place_Keyword: New England
Place_Keyword: New Hampshire

Access_Constraints: None
Use_Constraints:

Acknowledgement of the U.S. Fish and Wildlife Service and (or) the National Wetlands Inventory would be appreciated in products derived from these data

Point_of_Contact:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: U.S. Fish and Wildlife Service

Contact_Position: National Standards and Support Team
Contact_Address:

Address_Type: mailing and physical address
Address: 505 Science Drive
City: Madison
State_or_Province: WI
Postal_Code: 53711
Country: USA

Contact_Voice_Telephone: 608-238-9333
Contact_Facsimile_Telephone: 608-238-9334
Contact_Electronic_Mail_Address: wetlands_team@fws.gov

Native_Data_Set_Environment: Microsoft Windows 10; Esri ArcGIS 10.7.1
Cross_Reference:

Citation_Information:

Originator: U.S. Fish and Wildlife Serivce, National Wetlands Inventory
Publication_Date: Unknown
Title: Wetlands and Deepwater Habitats of the United States
Edition: Version 2
Geospatial_Data_Presentation_Form: vector digital data
Publication_Information:

Publication_Place: Washington, D.C. USA
Publisher: U.S. Fish and Wildlife Service

Data_Quality_Information:

Attribute_Accuracy:

Attribute_Accuracy_Report:

The source data was checked using standard review procedures. Attributes were checked by using visual inspection as well as field domains. Quality of the attribute information varies with age and mapping protocols used when individual maps were prepared

Logical_Consistency_Report: Polygon and chain-node topology are present.
Completeness_Report:

This data set represents the extent of wetlands and deepwater habitats that can be determined with the use of remotely sensed data and within the timeframe for which the maps were produced. Wetlands are shown in all of the 50 states, the District of Columbia, Puerto Rico, the Virgin Islands, Guam and Saipan. The accuracy of image interpretation depends on the quality of the imagery, the experience of the image analysts, the amount and quality of the collateral data, and the amount of ground truth verification work conducted. There is a margin error inherent in the use of imagery, thus detailed on-the-ground inspection of any particular site, may result in revision of the wetland boundaries or classification, established through image analysis. Wetlands or other mapped features may have changed since the date or the imagery and/or field work. There may be occasional differences in polygon boundaries or classifications between the information depicted on the map and the actual conditions on site.

Lineage:

Source_Information:

Source_Citation:

Citation_Information:

Originator: U.S. Fish and Wildlife Service
Publication_Date: Unknown
Title: Wetlands and Deepwater Habitats of the United States
Geospatial_Data_Presentation_Form: vector digital data
Series_Information:

Series_Name: National Wetlands Inventory Project Metadata, Version 2
Issue_Identification: 79/31

Publication_Information:

Publication_Place: Washington, D.C.
Publisher: U.S. Fish and Wildlife Service

Type_of_Source_Media: Digital file and hard copy paper
Source_Time_Period_of_Content:

Time_Period_Information:

Range_of_Dates/Times:

Beginning_Date: 1977
Ending_Date: 2021

Source_Currentness_Reference: Various dates

Source_Citation_Abbreviation: NH_Wetlands
Source_Contribution: Spatial information

Process_Step:

Process_Description:

This dataset is continually updated in various areas of the Nation where wetlands data are added to the wetlands data layer from the USFWS, other federal, state and local agencies, tribes, non-governmental organizations and universities. To identify these updated areas review the Data Source layers on the Wetlands Mapper, Projects Mapper on the Mapper homepage, or the Wetlands Project Metadata featureclass that is included in the data downloads.

Process_Date: Unknown

Process_Step:

Process_Description:

NH GRANIT clipped original NH_Wetlands data from NWI database to the New Hampshire state boundary and used NHSP 1983 as the output spatial reference system.

Process_Date: 20211210

Spatial_Data_Organization_Information:

Direct_Spatial_Reference_Method: Vector
Point_and_Vector_Object_Information:

SDTS_Terms_Description:

SDTS_Point_and_Vector_Object_Type: G-polygon
Point_and_Vector_Object_Count: 218,261

Spatial_Reference_Information:

Horizontal_Coordinate_System_Definition:

Planar:

Grid_Coordinate_System:

Grid_Coordinate_System_Name: State Plane Coordinate System 1983
State_Plane_Coordinate_System:

SPCS_Zone_Identifier: 2800
Transverse_Mercator:

Scale_Factor_at_Central_Meridian: 0.999967
Longitude_of_Central_Meridian: -71.666667
Latitude_of_Projection_Origin: 42.500000
False_Easting: 984250.000000
False_Northing: 0.000000

Planar_Coordinate_Information:

Planar_Coordinate_Encoding_Method: coordinate pair
Coordinate_Representation:

Abscissa_Resolution: 0.004430
Ordinate_Resolution: 0.004430

Planar_Distance_Units: survey feet

Geodetic_Model:

Horizontal_Datum_Name: North American Datum of 1983
Ellipsoid_Name: Geodetic Reference System 80
Semi-major_Axis: 6378137.000000
Denominator_of_Flattening_Ratio: 298.257222

Entity_and_Attribute_Information:

Detailed_Description:

Entity_Type:

Entity_Type_Label: NH_NWI
Entity_Type_Definition: Reference: Cowardin et al. 1979
Entity_Type_Definition_Source: U.S. Fish and Wildlife Service

Attribute:

Attribute_Label: FID
Attribute_Definition: Internal feature number.
Attribute_Definition_Source: ESRI
Attribute_Domain_Values:

Unrepresentable_Domain:

Sequential unique whole numbers that are automatically generated.

Attribute:

Attribute_Label: SHAPE
Attribute_Definition: Feature geometry
Attribute_Definition_Source: ESRI
Attribute_Domain_Values:

Unrepresentable_Domain: Coordinates defining the features

Attribute:

Attribute_Label: ATTRIBUTE
Attribute_Definition:

Alphanumeric code identifying the wetland classification of the polygon

Attribute_Definition_Source: http://www.fws.gov/wetlands/Data/Wetland-Codes.html
Attribute_Domain_Values:

Unrepresentable_Domain:

The wetland classification codes are a series of letter and number codes that have been developed to adapt the national wetland classification system to map form. These alpha-numeric codes correspond to the classification nomenclature (Cowardin et al. 1979) that best describes the habitat. (for example, PFO1A). Currently there are over 7,000 code combinations in the dataset with over 14 million possible permutations of the code. For information on the wetland codes visit: http://www.fws.gov/wetlands/Data/Wetland-Codes.html.

Attribute:

Attribute_Label: WETLAND_TY
Attribute_Definition: Wetland classification system types
Attribute_Definition_Source: U.S. Fish and Wildlife Service
Attribute_Domain_Values:

Unrepresentable_Domain: Text descriptions of the wetland classification system types

Attribute:

Attribute_Label: ACRES
Attribute_Definition: Area of the polygon in acres
Attribute_Definition_Source: Calculated using ESRI's geometry calculator
Attribute_Domain_Values:

Unrepresentable_Domain:

Positive real numbers calculated using ESRI's geometry calculator

Attribute:

Attribute_Label: SHAPE_Length
Attribute_Definition: Length of feature in internal units.
Attribute_Definition_Source: ESRI
Attribute_Domain_Values:

Unrepresentable_Domain: Positive real numbers that are automatically generated.

Attribute:

Attribute_Label: SHAPE_Area
Attribute_Definition: Area of feature in internal units squared.
Attribute_Definition_Source: ESRI
Attribute_Domain_Values:

Unrepresentable_Domain: Positive real numbers that are automatically generated.

Distribution_Information:

Distributor:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: Earth Systems Research Center, University of New Hampshire

Contact_Position: GRANIT Database Manager
Contact_Address:

Address_Type: mailing and physical
Address: Morse Hall, University of New Hampshire
City: Durham
State_or_Province: NH
Postal_Code: 03824
Country: US

Contact_Voice_Telephone: 603-862-1214
Contact_Facsimile_Telephone: 603-862-0188
Contact_Electronic_Mail_Address: granit@unh.edu

Distribution_Liability:

Although these data have been processed successfully on a computer system at the U.S. Fish and Wildlife Service, no warranty expressed or implied is made by the U.S. Fish and Wildlife Service regarding the utility of the data on any other system, nor shall the act of distribution constitute any such warranty. No responsibility is assumed by the U.S. Fish and Wildlife Service in the use of these data.

Standard_Order_Process:

Digital_Form:

Digital_Transfer_Information:

Format_Name: Shapefile

Digital_Transfer_Option:

Online_Option:

Computer_Contact_Information:

Network_Address:

Network_Resource_Name: https://www.fws.gov/wetlands/data/Data-Download.html

Fees:

No charge when downloaded from the Internet. Cost of reproduction for provision on CD/ROM of other media.

Ordering_Instructions:

Email GRANIT (granit@unh.edu) or order from web site (www.granit.sr.unh.edu).

Turnaround: Two weeks.

National Wetlands Inventory - New Hampshire

Metadata: