Metadata for Montana Wetland and Riparian Framework, December 2014 Metadata for Montana Wetland and Riparian Framework, December 2014

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Identification Information:

Citation:

Originator: Montana Natural Heritage Program (MTNHP)

Publication date: 12/03/2014

Title: Montana Wetland and Riparian Framework, December 2014

Publication place: Helena, Montana
Publisher: Montana State Library

Larger Work Citation:

Title: Montana Wetland and Riparian Framework
Online linkage: http://mslapps.mt.gov/Geographic_Information/Data/DataList/datalist_Details.aspx?did={f57e92f5-a3fa-45b2-9de8-0ba46bbb2d46}

Abstract:

The Montana Wetland and Riparian Framework represents the extent, type, and approximate location of wetlands, riparian areas, and deepwater habitats in Montana. These data delineate the areal extent of wetlands and deepwater habitats as defined by Cowardin et al. (1979) and riparian areas as defined by the U.S. Fish and Wildlife Service (2009).

The Montana Wetland and Riparian Framework consists of features that were manually digitized at a scale of 1:4,500 or 1:5,000 from orthorectified digital color-infrared aerial imagery collected during the summers of 2005, 2006, 2009, 2011, and 2013 by the National Agricultural Imagery Program (NAIP).

These data are intended for use in publications at a scale of 1:12,000 or smaller. This layer consists of one feature dataset: NHP_Layers. The NHP_Layers feature dataset contains the digital wetland and riparian mapping and consists of the feature class WetRip. This feature class consists of data that have undergone three rounds of internal quality assurance/quality control procedures by the MTNHP.

Purpose:

To provide current geospatially referenced information on the status, extent, characteristics, and functions of wetlands, riparian areas, and deepwater habitats to promote the understanding and conservation of these resources. These data provide consultants, planners, and resource managers with information on the location and type of wetlands and riparian areas in Montana. These data do not show precise wetland boundaries and should not be compared to boundaries delineated from ground surveys.

Wetland polygons are classified in accordance with the Wetlands Classification Standard endorsed by the Federal Geographic Data Committee (FGDC): Cowardin, L.M., V. Carter, F.C. Golet, and E.T. LaRoe. 1979. 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. Riparian polygons are classified in accordance with the publication U.S. Fish and Wildlife Service, Division of Habitat and Resource Conservation. 2009. A System for Mapping Riparian Areas in the Western United States.

Supplemental information:

The Wetland and Riparian Framework layer is one of the 15 Montana Spatial Data Infrastructure Framework layers. The goal of the layer is to have statewide digital wetland and riparian data for Montana. Mapping is completed to the Wetlands Mapping Standard endorsed by the FGDC in 2009 (FGDC-STD-015-2009). As projects are completed, they are submitted to the U.S. Fish and Wildlife Service for inclusion in the National Wetlands Inventory (NWI). Due to a lag time between submittal and availability, this layer may contain data that have been submitted to the NWI but are not yet available for download from the NWI website http://www.fws.gov/wetlands/data/Data-Download.html

Time period of content:

Calendar date: 12/03/2014
Currentness reference: Publication date

Status:

Progress: In work
Maintenance and update frequency: Semi-annually

Access constraints:

None. Acknowledgement of the Montana Natural Heritage Program is appreciated in products derived from these data.

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 layer. 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. Information in this data layer is not intended to be used as a precise locator of wetland boundaries, for site specific planning or management, or for regulatory purposes.

Proper use of wetland and riparian mapping 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.

The Montana State Library provides this product/service for informational purposes only. The Library did not produce it for, nor is it suitable for legal, engineering, or surveying purposes. Consumers of this information should review or consult the primary data and information sources to ascertain the viability of the information for their purposes. The Library provides these data in good faith but does not represent or warrant its accuracy, adequacy, or completeness. In no event shall the Library be liable for any incorrect results or analysis; any direct, indirect, special, or consequential damages to any party; or any lost profits arising out of or in connection with the use or the inability to use the data or the services provided. The Library makes these data and services available as a convenience to the public, and for no other purpose. The Library reserves the right to change or revise published data and/or services at any time.

Point of contact:

Montana State Library
P.O. Box 201800
Helena, Montana 59620-1800
Telephone: 406-444-5354
TDD/TTY telephone: Montana Relay 711
Fax: 406-444-0266
E-Mail: geoinfo@mt.gov

Data set credit:

The Wetland and Riparian Framework was created by the Montana Natural Heritage Program.

Data Quality Information:

Attribute accuracy report:

The minimum mapping unit is 0.1 acres for wetland polygons and 0.5 acres for riparian polygons, although polygons smaller in size can be mapped if interpretable and mappable. Linear features such as streams, canals, or ditches are mapped if they are 15 feet (3 meters) or greater in width at a mapping scale of 1:4,500.

Completeness report:

The Wetland and Riparian Framework is either complete, in progress, or scheduled to be mapped for approximately 80% of Montana. This data set represents the extent of wetlands, riparian areas and deepwater habitats that can be determined with the use of remotely sensed data and within the timeframe for which the maps were produced. 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. Error is inherent in the interpretation of aerial imagery, thus detailed on-the-ground inspection of any particular site may result in revision of the mapped boundaries or classification. Wetlands or other mapped features may have changed since the date of the imagery and/or field work. Differences may exist in polygon boundaries or classifications between the information depicted on the map and the actual conditions on the ground.

Horizontal Positional Accuracy Report:

The horizontal accuracy minimum requirement is commensurate with the base imagery scale. The base imagery scale for this layer is 1:12,000. The minimum horizontal accuracy requirement is 5 meters.

Lineage:

Source information:

Originator: Montana Natural Heritage Program
Publication date: 12/03/2014
Title: Montana Wetland and Riparian Framework
Calendar date: 12/03/2014

Process step:

Mapping is completed by individual project area. Mapping project areas are largely determined by the project funder. Once a project area is selected, a shapefile of the project boundary is sent to the NWI and the USGS Wisconsin Internet Mapping Center. A file geodatabase is sent by the USGS containing the empty wetland and riparian feature class. Wetland and riparian mapping is created in this feature class.

Image analysts with MTNHP use 1-meter resolution color-infrared aerial ortho-rectified imagery to develop photo signatures and interpret wetlands and riparian areas. This imagery serves as the base imagery from which wetland and riparian data are produced. Wetland and riparian mapping data are produced through on-screen digitizing performed at a mapping scale of 1:4,500. Ancillary data layers such as multiple imagery years, topographic maps, digital elevation models, and hydrography data are used to improve mapping accuracy. Wetland polygons are classified according to the FGDC Wetlands Mapping Standard (2009), which is based upon the Wetlands and Deepwater Habitats of the United States (Cowardin et al. 1979). Riparian polygons are classified according to the USFWS A System for Mapping Riparian Areas in the Western United States (2009). Mapping is completed for U.S. Geological Survey 1:24,000 quadrangles. Once mapping is complete for an individual quadrangle, the image analyst runs several verification checks to fix any errors in polygon attribution. Any topology errors are also fixed to eliminate overlapping polygons.

Three rounds of internal quality assurance/quality control (QA/QC) procedures are conducted for each mapped quadrangle once the above steps are completed. Up to three MTNHP image analysts who did not complete the mapping perform the QA/QC duties for each completed quadrangle. The image analyst who mapped the quadrangle makes any necessary corrections based on comments made during each round of QA/QC. Once final edits are complete, verification checks are completed a second time. Data are incorporated into the WetRip layer. Data are also sent to the NWI for review and approval. Mapping within the wetland and riparian layer is edge-matched with surrounding areas to produce a seamless layer.

Process date: 12/03/2014

Process contact:

Karen Newlon
Montana Natural Heritage Program
PO Box 201800
Helena, MT 59620-1800
Telephone: 406-444-0915
E-Mail: knewlon@mt.gov

Spatial Reference Information:

Horizontal coordinate system definition:

Grid coordinate system name: State Plane Coordinate System

SPCS zone identifier: 2500

Lambert conformal conic:

Standard parallel: 45.000000
Standard parallel: 49.000000
Longitude of central meridian: -109.500000
Latitude of projection origin: 44.250000
False easting: 600000.000000
False northing: 0.000000

Planar distance units: meters

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:

Entity type label: NHP_Layers

Attribute label: ObjectID

Attribute definition: Internal feature number.

Attribute label: SHAPE

Attribute definition: Feature geometry.

Attribute label: ATTRIBUTE

Attribute definition:: This field contains a series of codes that describe the wetland or riparian type. The FULL_CLASS field contains an explanation of the codes.

Attribute label: WETLAND_TYPE

Attribute definition: General description of wetland or riparian classification.

Attribute label: ACRES

Attribute definition: The areas in acres of the mapped polygon.

Attribute label: SHAPE_Area

Attribute definition: Area of feature in square meters
Attribute domain: Positive real numbers that are automatically generated.

Attribute label: SHAPE_Length

Attribute definition: Length in meters.

Attribute label: SYSTEM

Attribute definition: The wetland or riparian system of the mapped polygon.

Attribute label: Subsystem

Attribute definition: The wetland or riparian subsystem of the mapped polygon.

Attribute label: CLASS

Attribute definition: The wetland or riparian class of the mapped polygon.

Attribute label: WATER_REGIME

Attribute definition: The duration of flooding. Applies to wetland polygons only.

Attribute label: SPECIAL_MODIFIER

Attribute definition:: Modification of the wetland polygon. Applies to wetland polygons.

Attribute label: NWICode

Attribute definition: A combination of the System, Subsystem and Class fields.

Attribute label: Major_Class

Attribute definition:: This is the first character of the Attribute field, except in the case of Riparian attributes, which are designated with a lower case r.

Attribute label: FULLCLASS

Attribute definition:: Full textual description of the wetland or riparian type, depth, bottom type, standing water status, and special modifiers.

Distribution Information:

Distributor:

Montana State Library
P.O. Box 201800
Helena, Montana 59620-1800
Telephone: 406-444-5354
TDD/TTY telephone: Montana Relay 711
Fax: 406-444-0266
E-Mail: geoinfo@mt.gov

Resource description: Offline Data

Distribution liability:

The Montana State Library provides this product/service for informational purposes only. The Library did not produce it for, nor is it suitable for legal, engineering, or surveying purposes. Consumers of this information should review or consult the primary data and information sources to ascertain the viability of the information for their purposes. The Library provides these data in good faith but does not represent or warrant its accuracy, adequacy, or completeness. In no event shall the Library be liable for any incorrect results or analysis; any direct, indirect, special, or consequential damages to any party; or any lost profits arising out of or in connection with the use or the inability to use the data or the services provided. The Library makes these data and services available as a convenience to the public, and for no other purpose. The Library reserves the right to change or revise published data and/or services at any time.

Metadata Reference Information:

Metadata date: 12/03/2014

Metadata contact:

Jamul Hahn
Montana Natural Heritage Program
PO BOX 201800
Helena, MT 59620-1800
Telephone: 406-444-4793
E-Mail: jhahn@mt.gov