Montana Wetland and Riparian Framework MSDI

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Data Provider Ecological Mapping, Monitoring and Analysis (EMMA) Group - University of Montana
Date 05/27/2022
Content Type Downloadable Data
MSDI Framework Wetlands
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. (2013) and riparian areas as defined by the U.S. Fish and Wildlife Service (2019). These data represent wetland and riparian mapping managed by the University of Montana's Ecological Mapping, Monitoring and Analysis (EMMA) Group. Wetland and riparian areas 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, 2009, 2011, 2013, 2015, 2017, 2019, and 2021 by the National Agricultural Imagery Program (NAIP). These data are intended for use in publications at a scale of 1:12,000 or smaller. These data do not cover the entire state of Montana. For areas within Montana that do not have updated mapping or modern mapping, please download the NWI Legacy (outdated mapping) data from For more information regarding the different datasets, please refer to the following document
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): Federal Geographic Data Committee. 2013. Classification of wetlands and deepwater habitats of the United States. FGDC-STD-004-2013. Second Edition. Wetlands Subcommittee, Federal Geographic Data Committee and U.S. Fish and Wildlife Service, Washington, DC. Riparian polygons are classified in accordance with the publication U.S. Fish and Wildlife Service, Ecological Services Division of Budget and Technical Support Branch of Geospatial Mapping and Technical Support. 2019. 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 2013 (FGDC-STD-004-2013). 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 NWI mapping standards have evolved since the NWI mapping began. Consequently, there may be discrepancies in mapping between quads because NWI mapping standards were different at the time the quads were mapped.
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.
Data Access
Distributor Kay Hajek
O'Connor Center for the Rocky Mountain West
600 University Ave
Missoula, MT 59801
Telephone: 406-202-0484
Distribution liability Users must assume responsibility to determine if these data are suitable for their purposes.
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Metadata date 02/06/2023

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