The data release for the geologic and structure map of the Choteau 1 x 2 degree quadrangle, western Montana, is a Geologic Map Schema (GeMS)-compliant version that updates the GIS files for the geologic map published in U.S. Geological Survey (USGS) Miscellaneous Investigations Series Map I-1300 (Mudge and others, 2001). The updated digital data present the attribute tables and geospatial features (lines and polygons) in the format that meets GeMS requirements. This data release presents geospatial data for the geologic map that is published as two plates. Minor errors, such as mistakes in line decoration or differences between the digital data and the map image, are corrected in this version. The database represents the geology for the 4.2 million acre, geologically complex Choteau 1 x 2 degree quadrangle, at a publication scale of 1:250,000. The map covers primarily Lewis and Clark, Teton, Powell, Missoula, Lake, and Flathead Counties, but also includes minor parts of Cascade County. These GIS data supersede those in the report: Mudge, M.R., Earhart, R.L., Whipple, J.W., Harrison, J.E., Munts, S.R., and Silkwood, J.T., 2001, Geologic and structure map of the Choteau 1 x 2 degree quadrangle, western Montana: a digital database: U.S. Geological Survey Miscellaneous Investigations Series Map I-1300, version 1.0, 38 p., scale 1:250,000, https://pubs.er.usgs.gov/publication/i1300.

This is a map service for the display and query of data collected between September 22 and September 29, 2009, covering the floor of the Flathead Valley above Flathead Lake, the area around Polson, and the shoreline areas of Flathead Lake, Whitefish Lake, and Swan Lake. Data from the project include natural color and color-infrared orthorectified aerial photos whose horizontal resolution is 1 foot, a digital elevation models whose resolution is 6 feet, and topographic contour lines whose interval is 2 feet. The vertical datum of the data is NAVD88, Geoid 03. The service is an ArcGIS Server Map service that may be loaded into GIS applications and used in web mapping applications.

This is a map service for the display and query of data collected between September 22 and September 29, 2009, covering the floor of the Flathead Valley above Flathead Lake, the area around Polson, and the shoreline areas of Flathead Lake, Whitefish Lake, and Swan Lake. Data from the project include natural color and color-infrared orthorectified aerial photos whose horizontal resolution is 1 foot, a digital elevation models whose resolution is 6 feet, and topographic contour lines whose interval is 2 feet. The vertical datum of the data is NAVD88, Geoid 03. The service is an ArcGIS Server Map service that may be loaded into GIS applications and used in web mapping applications.

The Flathead River CMZ was completed in 2010 to provide data which could be used to identify potential future problem areas for streambank landowners, restoration opportunities, and management best practices for 24 miles of the Flathead River above its confluence with Flathead Lake. It provides potential rates of lateral river movement for the next 100 years based on analyses of historical aerial photos 1956 to 2009). The study and map are useful to land owners, planners, river restoration, and construction professionals working near the Flathead River, and others who make decisions that could be affected by river movementThe project was sponsored by the Flathead Lakers, the Montana DEQ Wetlands Program, and Montana Fish, Wildlife, and Parks. A local Technical Advisory Committee provided project oversight and included representatives from DEQ, FWP, DNRC, Flathead County Planning and Zoning, Flathead Conservation District, Flathead River Commission, and Flathead Basin Commission, and Flathead Lakers. The work was performed by Applied Geomorphology and DTM Consulting.This map was designed to support the Library's channel migration zone web site at: http://geoinfo.msl.mt.gov/Home/data/montana_channel_migration_zones/projects/flathead_river_-_old_steel_bridge_to_flathead_lake.aspx

The Montana Cadastral Framework shows the taxable parcels and tax-exempt parcels for most of Montana. The parcels contain selected information such as owner names, property and owner addresses, assessed value, agricultural use, and tax district information that were copied from the Montana Department of Revenue's ORION tax appraisal database. The data are maintained by the MT Department of Revenue, except for Ravalli, Silver Bow, Cascade, Missoula, Lake, Flathead and Yellowstone counties that are maintained by the individual counties. The Revenue and county data are integrated by Montana State Library staff. Each parcel contains an attribute called ParcelID (geocode) that is the parcel identifier. Large areas of public land in Flathead County are missing from the data. The parcel boundaries were aligned to fit with the Bureau of Land Management Geographic Coordinate Database (GCDB) of public land survey coordinates. Parcels whose legal descriptions consisted of aliquot parts of the public land survey system were created from the GCDB coordinates by selecting and, when necessary, subdividing public land survey entities. Other parcels were digitized from paper maps and the data from each map were transformed to fit with the appropriate GCDB boundaries.

The geologic and structure map of Choteau 1 x 2 degree quadrangle (Mudge and others, 1982) was originally converted to a digital format by Jeff Silkwood (U.S. Forest Service and completed by the U.S. Geological Survey staff and contractor at the Spokane Field Office (WA) in 2000 for input into a geographic information system (GIS). The resulting digital geologic map (GIS) database can be queried in many ways to produce a variey of geologic maps. Digital base map data files (topography, roads, towns, rivers and lakes, etc.) are not included: they may be obtained from a variety of commercial and government sources. This database is not meant to be used or displayed at any scale larger than 1:250,000 (e.g. 1:100,000 or 1:24,000. The digital geologic map graphics and plot files (chot250k.gra/.hp/.eps and chot-map.pdf) that are provided in the digital package are representations of the digital database. They are not designed to be cartographic products.