Montana Natural Heritage Program (MTNHP) 20201215 vector digital data Helena, Montana Montana State Library https://ftpgeoinfo.msl.mt.gov/Data/Spatial/MSDI/Wetlands/Archive/WetlandRiparian20201217.zip https://mslservices.mt.gov/Geographic_Information/Data/DataList/datalist_Details.aspx?did={f57e92f5-a3fa-45b2-9de8-0ba46bbb2d46} 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). This is modern mapping completed by Montana Natural Heritage Program's (MTNHP) Wetland and Riparian Mapping Center 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, 2013, 2015, 2017, and 2019 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 For areas within Montana that do not have modern MTNHP mapping, please use the NWI Legacy (outdated mapping) and the NWI Scalable (incomplete mapping) datasets. For more information regarding the different datasets, please refer to the following document https://mtnhp.org/nwi/Wetland_Riparian_Mapping_Status_Info.pdf. 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. 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 https://www.fws.gov/program/national-wetlands-inventory/data-download 20201215 Publication date In work Biannually -116.176267 -103.611823 49.178031 44.254695 ISO 19115 Topic Category biota environment inlandWaters None Wetlands Deepwater habitats Hydrography Surface water Swamp, marsh, fen, pond Riparian Floodplain NWI Montana Spatial Data Infrastructure MSDI Wetland and Riparian Framework None Montana None. Acknowledgement of the Montana Natural Heritage Program is appreciated in products derived from these data. 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. Montana Natural Heritage Program (MTNHP) Sara Owen Wetland and Riparian Framework Theme Contact mailing

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Helena MT 59620-1800 406-444-4728 406-202-0484 sara.owen@mso.umt.edu Preferred method of contact is via e-mail. The Wetland and Riparian Framework was created by the Montana Natural Heritage Program. Version 6.2 (Build 9200) ; Esri ArcGIS 10.6.1.9328 The Wetland and Riparian Framework is either complete, in progress, or scheduled to be mapped for approximately 86% 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. Montana Natural Heritage Program 20201215 None 20201215 Unknown Montana Wetland and Riparian Framework 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’s National Standards and Support Team. A file geodatabase is sent by the NWI 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. 2013). Riparian polygons are classified according to the USFWS A System for Mapping Riparian Areas in the Western United States (2019). 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. 20201215 Montana Natural Heritage Program Sara Owen mailing

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Helena MT 59620-1800 406-444-4728 406-202-0484 sara.owen@mso.umt.edu Preferred method of contact is via e-mail. Vector GT-polygon composed of chains 1282936 NAD 1983 StatePlane Montana FIPS 2500 45.0 49.0 -109.5 44.25 600000.0 0.0 coordinate pair 0.0001 0.0001 meter D North American 1983 GRS 1980 6378137.0 298.257222101 NHP_Layers OBJECTID Internal feature number. ESRI Sequential unique whole numbers that are automatically generated. Shape Feature geometry. ESRI Coordinates defining the features. ATTRIBUTE This field contains a series of codes that describe the wetland or riparian type. The FULL_CLASS field contains an explanation of the codes. WETLAND_TYPE General description of wetland or riparian classification. FULL_CLASS Full description of wetland or riparian type (SYSTEM/SUBSYSTEM), substrate or vegetation type (CLASS), vegetation description for EM, SS, or FO (SUBCLASS), length of flooding and/or saturation (WATER_REGIME), and SPECIAL_MODIFIER. For example, the FULL_CLASS value for a wetland with an ATTRIBUTE value of PEM1C is Palustrine, Emergent, Persistent, Seasonally Flooded. SYSTEM The wetland or riparian system of the mapped polygon. L Lacustrine P Palustrine R Riverine Rp Riparian SUBSYSTEM The wetland or riparian subsystem of the mapped polygon. Subsystem applies only to Lacustrine, Riverine, and Riparian systems (Palustrine systems have no subsystem). 1 Lotic (applies to Riparian system only) 2 Lentic (applies to Riparian system only) 1 Limnetic (applies to Lacustrine system only) 2 Littoral (applies to Lacustrine system only) 2 Lower Perennial (applies to Riverine system only) 3 Upper Perennial (applies to Riverine system only) 4 Intermittent (applies to Riverine system only) CLASS The wetland or riparian class of the mapped polygon. Class describes the general appearance of the mapped polygon's habitat in terms of either the dominant life form of the vegetation or the physiography and composition of the substrate. AB Aquatic bed EM Emergent vegetation FO Forested vegetation RB Rock bottom RS Rocky shore SB Streambed SS Scrub-shrub vegetation UB Unconsolidated bottom US Unconsolidated shore SUBCLASS General vegetation description for EM, SS, FO classes in Riverine, Lacustrine, and Palustrine systems (there are no SUBCLASS values for the Riparian system). 1 Persistent (applies to Lacustrine and Palustrine systems with Emergent Vegetation class only) 2 Nonpersistent (applies to Lacustrine, Riverine, and Palustrine systems with Emergent Vegetation class only) 1 Broad-leaved deciduous (applies to Lacustrine and Palustrine systems with Scrub-shrub and Forested classes only) 2 Needle-leaved deciduous (applies to Palustrine systems with Scrub-shrub and Forested classes only) 3 Broad-leaved evergreen (applies to Palustrine systems with Scrub-shrub and Forested classes only) 4 Needle-leaved evergreen (applies to Palustrine systems with Scrub-shrub and Forested classes only) 5 Dead (applies to Palustrine systems with Scrub-shrub and Forested classes only) WATER_REGIME The duration of flooding and/or saturation. Water Regime applies to wetland polygons only. There are no Riparian water regimes. A Temporarily Flooded B Saturated C Seasonally Flooded D Continuously Saturated E Seasonally Flooded/Saturated F Semipermanently Flooded G Intermittently Exposed H Permanently Flooded J Intermittently Flooded K Artificially Flooded SPECIAL_MODIFIER Modification of the wetland polygon. Special Modifiers apply to wetland polygons only. There are no Riparian special modifiers. b Beaver d Partially Drained/Ditched f Farmed h Diked/Impounded m Managed r Artificial substrate s Spoil x Excavated ACRES The area of the polygon in acres. NWI_CODE A combination of the SYSTEM, SUBSYSTEM and CLASS fields. NWI_CODE values are arranged in a consistent order dependent on the system. For lacustrine, riparian and riverine systems the NWI_CODE is equal to SYSTEM, SUBSYSTEM and CLASS. For palustrine systems NWI_CODE is equal to SYSTEM and CLASS. For palustrine systems where ATTRIBUTE is equal to Pf NWI_CODE is equal to SYSTEM. For example, a wetland with an attribute of PEM1C has a NWI_CODE of PEM. GlobalID Unique identifier automatically generated/maintained for the polygon. UniqueID Unique identifier manually populated for the polygon. Shape_Length Length of polygon perimeter in meters. Esri Positive real numbers that are automatically generated. Shape_Area Area of feature in square meters. Esri Positive real numbers that are automatically generated. Sara Owen mailing and physical

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Helena MT 59620-1800 406-444-4728 406-202-0484 sara.owen@mso.umt.edu Preferred method of contact is via e-mail. Downloadable Data Users must assume responsibility to determine if these data are suitable for their purposes. File geodatabase (GDB) https://ftpgeoinfo.msl.mt.gov/Data/Spatial/MSDI/Wetlands/ 20201215 2020-12-15 Montana Natural Heritage Program Sara Owen mailing and physical

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Helena MT 59620-1800 406-444-4728 406-202-0484 sara.owen@mso.umt.edu Preferred method of contact is via email. FGDC Content Standard for Digital Geospatial Metadata FGDC-STD-001-1998 local time {86b797bb-525b-4126-b53c-71217e52bc4d}