U.S. Environmental Protection Agency, USDA Forest Service, and other Federal, State and local partners U.S. Geological Survey Montana State Library 20240813 vector digital data Helena, Montana Montana State Library https://ftpgeoinfo.msl.mt.gov/Data/Spatial/MSDI/Hydrography/ https://msl.mt.gov/GIS/Hydro Montana State Library 20231227 https://mslservices.mt.gov/Geographic_Information/Data/DataList/datalist_Details.aspx?did={d058c587-24a7-44b3-9e3e-3c7aa1ae2bb4} The National Hydrography Dataset (NHD) is a feature-based database that interconnects and uniquely identifies the stream segments or reaches that make up the nation's surface water drainage system. NHD data was originally developed at 1:100,000-scale and exists at that scale for the whole country. This high-resolution NHD, generally developed at 1:24,000/1:12,000 scale, adds detail to the original 1:100,000-scale NHD. (Data for Alaska, Puerto Rico and the Virgin Islands was developed at high-resolution, not 1:100,000 scale.) Local resolution NHD is being developed where partners and data exist. The NHD contains reach codes for networked features, flow direction, names, and centerline representations for areal water bodies. The NHD also incorporates the National Spatial Data Infrastructure framework criteria established by the Federal Geographic Data Committee. Named streams and waterbodies from the NHD dissolved by GNIS ID and clipped to the state boundary. 20240813 publication date -117.834654 -101.436083 50.708458 43.352890 None stream artificial path reservoir river Montana Spatial Data Infrastructure marsh pond swamp reach code hydrography inlandWaters seep canal MSDI lake spring ditch ISO 19115 Topic Categories inlandWaters structure None Montana None DISCLAIMER: The Montana State Library Geographic Information Services 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. Montana State Library mailing

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Helena Montana 59620 406.444.5354 geoinfo@mt.gov USGS, Montana State Library, and other contributors and base sources. See dataset feature-level metadata (tables: NHD Metadata, NHD Source Citation, and NHDFeatureToMetadata via key Meta_ProcessID; feature class to NHDFeatureMetadata via key Permenant_Identifier) Esri ArcGIS 12.9.4.32739 Vector String 0 NHDPoint NHDPoint contains points representing NHD hydrographic landmark features. NHD User Guide https://ftpgeoinfo.msl.mt.gov/Data/Spatial/MSDI/Hydrography/ OBJECTID Internal feature number. Esri Sequential unique whole numbers that are automatically generated. gnis_id Join_Count TARGET_FID gnis_name SHAPE Feature geometry. Esri Coordinates defining the features. tnmid metasourceid sourcedatadesc sourceoriginator sourcefeatureid loaddate referencegnis_ids areaacres areasqkm states huc8 name SHAPE_Length Length of feature in internal units. Esri Positive real numbers that are automatically generated. NHDFlowline NHDFlowlines consist of routes that make up a linear surface water drainage network. NHD User Guide https://www.usgs.gov/national-hydrography/national-hydrography-dataset Ftype Underground Conduit (420) StreamRiver (460) Pipeline (428) ArtificialPath (558) CanalDitch (336) Connector (334) Coastline (566) NHD User Guide https://www.usgs.gov/national-hydrography/national-hydrography-dataset NHDLine NHDLines represent linear NHD hydrographic landmark features used for cartographic representation. NHD User Guide https://www.usgs.gov/national-hydrography/national-hydrography-dataset Ftype Tunnel (478); Bridge (318); Lock Chamber (398); Wall (483); Sounding Datum Line (503); Levee (568); Gate (369); Flume (362); Waterfall (487); Reef (434); Special Use Zone Limit (533); SinkRise (450); Rapids (431); DamWeir (343); Nonearthen Shore (411) NHD User Guide https://www.usgs.gov/national-hydrography/national-hydrography-dataset NHDArea NHDAeas are areal hydrographic landmark features. NHD User Guide https://www.usgs.gov/national-hydrography/national-hydrography-dataset Ftype Inundation Area (403); SeaOcean (445); Submerged Stream (461); CanalDitch (336); Levee (568); StreamRiver (460); Hazard Zone (373); Wash (484); BayInlet (312); Rapids (431); Foreshore (364); Bridge (318); Area of Complex Channels (537); Lock Chamber (398); Special Use Zone (454); Spillway (455); Flume (362); DamWeir (343); Water IntakeOutflow (485); Area to be Submerged (307) NHD User Guide https://www.usgs.gov/national-hydrography/national-hydrography-dataset NHDWaterbody NHDWaterbodies contain regions representing areal NHD hydrographic waterbody features. NHD User Guide https://www.usgs.gov/national-hydrography/national-hydrography-dataset Ftype Playa (361); Ice Mass (378); SwampMarsh (466); Estuary (493); LakePond (390); Reservoir (436) NHD User Guide https://www.usgs.gov/national-hydrography/national-hydrography-dataset NHDAreaEventFC Area event must be tied to a NHDWaterbody. They cannot be linked to a linear or point feature. Area events are built into the NHD Model but are not accepted back into the National Database. They are meant to be used on an individual basis. NHD User Guide https://www.usgs.gov/national-hydrography/national-hydrography-dataset NHDLineEventFC Linear Events are used to attach information about a flowline segment to the NHD. Linear events are built into the NHD Model but are not accepted back into the National Database. They are meant to be used on an individual basis. They also need a from and to location and a reachcode. NHD User Guide https://www.usgs.gov/national-hydrography/national-hydrography-dataset NHDPointEventFC Point events are tied to a specific location on a stream network by a reachcode and a measure. While several types of Point Events are accepted back into the National Database, additional Point Event Types may be used on an individual basis. Locations of dams, stream gauges, water quality locations NHD User Guide https://www.usgs.gov/national-hydrography/national-hydrography-dataset HYDRO_NET_Junctions The feature classes called Hydro Net and Hydro Net Junction contain the geometric network for the Hydrography Dataset with assigned flow direction for flowline features. Hydro_Net is an ESRI utility network, and Hydro Net Junction contains points for all flowline start and end nodes. These are produced when the NHD is extracted from the National Database and the network is given the name Hydro Net. NHD User Guide https://www.usgs.gov/national-hydrography/national-hydrography-dataset ExternalCrosswalk (table) Contains associations of Permanent _Identifiers to external source identifiers (1:M) NHD User Guide https://www.usgs.gov/national-hydrography/national-hydrography-dataset NHD FCode (table) Five-digit integer value comprised of the feature type and the combinations of characteristcs and values NHD User Guide https://www.usgs.gov/national-hydrography/national-hydrography-dataset NHDFeatureToMetadata (table) In the NHD geodatamodel, feature-level metadata information is included in three tables: NHDFeatureToMetadata, NHDMetdata, and NHDSourceCitation. The NHDFeatureToMetadata table links the features to their instances of metadata. The NHDMetadata table contains the general metadata characteristics for each collection of features. The NHDSourceCitation table details the source associated with each metadata instance. NHD User Guide https://www.usgs.gov/national-hydrography/national-hydrography-dataset NHDMetadata (table) In the NHD geodatamodel, feature-level metadata information is included in three tables: NHDFeatureToMetadata, NHDMetdata, and NHDSourceCitation. The NHDFeatureToMetadata table links the features to their instances of metadata. The NHDMetadata table contains the general metadata characteristics for each collection of features. The NHDSourceCitation table details the source associated with each metadata instance. NHD User Guide https://www.usgs.gov/national-hydrography/national-hydrography-dataset NHDSourceCitation (table) In the NHD geodatamodel, feature-level metadata information is included in three tables: NHDFeatureToMetadata, NHDMetdata, and NHDSourceCitation. The NHDFeatureToMetadata table links the features to their instances of metadata. The NHDMetadata table contains the general metadata characteristics for each collection of features. The NHDSourceCitation table details the source associated with each metadata instance NHD User Guide https://www.usgs.gov/national-hydrography/national-hydrography-dataset NHDFlow (table) the NHDFlow table provides feature to feature flow information for the NHDFlowline feature class. This flow table data is redundant with the network flow navigation available in the geometric network in both the personal and file geodatabase downloads. The flow table is intended to support interoperability with applications outside of ESRI geodatabase solutions. NHD User Guide https://www.usgs.gov/national-hydrography/national-hydrography-dataset NHDFlowlineVAA (table) hThe NHD Value Added Attributes are computed from the NHDFlow table and assigned to each drainage feature in the stream network. The values currently are not populated but will be in the future; they are essential to NHD Plus. NHD User Guide https://www.usgs.gov/national-hydrography/national-hydrography-dataset NHD Processing Parameters (table) This table lists the schema and the version of the master NHD database that was used to generate extracted NHD data. NHD User Guide https://www.usgs.gov/national-hydrography/national-hydrography-dataset NHD reach cross reference (table) This table provides information that tracks changes, over time, to reach codes. NHD User Guide https://www.usgs.gov/national-hydrography/national-hydrography-dataset NHD reachcode maintenance (table) Table used to maintain links for backward compatibility with FOD-based systems. NHD User Guide https://www.usgs.gov/national-hydrography/national-hydrography-dataset NHD Status (table) NHDStatus is used to track data changes for transaction uploads to the central repository. This table is only populated during editing. NHD User Guide https://www.usgs.gov/national-hydrography/national-hydrography-dataset NHD Vertical Relationship (table) Used for features that cross but do not exchange flow, i.e rivers and canals. NHD User Guide https://www.usgs.gov/national-hydrography/national-hydrography-dataset HYDRO_NET HYDRO_NET_Junctions NHD User Guide https://www.usgs.gov/national-hydrography/national-hydrography-dataset Montana State Library mailing

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Helena MT 59620-1800 406-444-5354 Montana Relay 711 406-444-0266 geoinfo@mt.gov Downloadable Data 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. ESRI Shapefile, ESRI File Geodatabase https://ftpgeoinfo.msl.mt.gov/Data/Spatial/MSDI/Hydrography/ 20240927 Montana State Library mailing

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Helena Montana 59620-1800 406-444-5354 Montana Relay 711 406-444-0266 geoinfo@mt.gov FGDC Content Standard for Digital Geospatial Metadata FGDC-STD-001-1998 local time {c9d114f4-fd44-49c6-a039-a80ef078e437}