Description: This group layer displays the currently adopted land use designations for Missoula County effective as of June 6, 2019. Each layer displays the land use designation symbols and labels that include the designation name or code and the name of the area plan for which they are effective.
Copyright Text: Missoula County Commmunity and Planning Services
Description: This layer displays the Missoula County land use designations in the 2019 Missoula Area Land Use Element as adopted by the Missoula Board of County Commissioners on June 6, 2019 except for areas annexed into the City of Missoula or updated by other plans. This layer package is intended as a cartographic representation of the land use designations for general mapping and planning purposes only. For help with this layer, please email [email protected] or call 406-258-4642.
Copyright Text: Missoula County Community and Planning Services
Name: 2002 Regional Land Use Guide (1975 Comp Plan)
Display Field: planname
Type: Feature Layer
Geometry Type: esriGeometryPolygon
Description: <DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN>The 2016 Missoula County Growth Policy is an official public document guiding future social, physical, environmental, and economic growth and development of the county. The land use designations map is an important piece of the growth policy used as the policy foundation for making decisions on land use issues. The map and associated text is a visual and written description of the desired future character of land use in the community. Each land use designation describe places with similar goals, characteristics, uses, and mobility considerations. </SPAN></P><P><SPAN>The land use designation map was originally adopted as part of the 1975 Missoula County Comprehensive Plan and has been updated in portions of the county over time through the adoption of other area plans. The map was most recently updated to the map occurred on June 6, 2019 when the 2019 Missoula Area Land Use Element area plan was adopted by the Missoula Board of County Commissioners. This feature class displays the polygon features for each land use designation shown on the map, except for areas are annexed into the City of Missoula. The attributes for each feature include the land use designation name, the area plan under which it was adopted, and the number of residential dwelling units per acre allowed under that designation. </SPAN></P></DIV></DIV></DIV>
Copyright Text: GIS Data created by:
Missoula County Community and Planning Services
127 E Main St, Suite 2, Missoula, MT 59802
Planning Information Desk: (406) 258-4642
[email protected]
Description: This feature class contains polygon features that provide a cartographic representation of the estimated relative integrated wildfire hazard in Missoula County. These polygons depict spatial summaries of underlying raster data representing probabilistic components of wildfire risk, generated through spatial wildfire risk assessments for Missoula County and the Lolo National Forest. Wildfire risk is a measure of both the probability and consequences of uncertain future wildfire events (Thompson, Zimmerman, Mindar, and Taber. 2016). Risk for any specific location is dependent on three components: the chances of a fire occurring there (burn probability or wildfire likelihood), the likely intensity of fire if it occurs, and the susceptibility of something of value at that location. For the 2018 Missoula County CWPP, fine-scale information on the susceptibility of homes was not readily available, but modeled estimates of burn probability and intensity were. The product of burn probability and expected intensity (flame length) is the integrated wildfire hazard depicted in this polygon feature class. Raster data for burn probability were generated by the U.S. Forest Service's Rocky Mountain Research Station (RMRS) in a 2016 risk assessment for the Lolo National Forest, using the FSim large fire simulator system. Raster data for intensity was generated by the Anchor Point Group in a 2016 risk assessment for Missoula County, using FlamMap fire behavior modeling software and a 90th percentile weather scenario. Both approaches used landscape fuel conditions as of 2015, along with topography, historical weather, and wildfire ignition patterns to model fire behavior across all of Missoula County. Integrated wildfire hazard was calculated by RMRS by multiplying the raster layers of burn probability and average expected intensity (flame length). The raster hazard data were then summarized by the polygons in this feature class to eliminate pixilation and avoid inappropriate fine-scale use of the raster modeling data. Raw hazard values were classified into quartiles to reflect the relative hazard across Missoula County. Each polygon represents a catchment area (local drainage area) for stream segments, as defined and delineated in the U.S. EPA's National Hydrography Dataset Plus (NHDPlus) version 2. For this dataset, catchment area polygon features with an area smaller than 40 acres were merged with neighboring polygons using GIS software.
Copyright Text: --Data Sources
Rocky Mountain Research Station, U.S. Forest Service
- 2018 Missoula County modeled Relative Wildfire Hazard dataset
- 2016 Annual Burn Probability Estimate (FSim model output)
– 2015 Landscape fuel data (.LCP file) created from LANDFIRE 2012 data and the LANDFIRE Total Fuel Change Tool LANDFIRE Data Distribution Site – Topographic, Surface Fuel, Canopy Fuel, and Vegetation raster layers from LANDFIRE 2012, Version 1.3.0 https://www.landfire.gov/topographic.php
https://www.landfire.gov/fuel.php
https://www.landfire.gov/vegetation.php
https://www.landfire.gov/version_comparison.php
Anchor Point Group
- 2016 Modeled 90th Percentile Flame Length Estimate (FlamMap model output) --Reference Publications Headwaters Economics. 2016. A Comparison of Two Wildfire Risk Modeling Approaches in Missoula County, Montana. Bozeman, MT. Montana Department of Natural Resources & Conservation, Forestry Division. 2013. 2013 Seeley-Swan Fire Plan. Missoula, MT. http://dnrc.mt.gov/divisions/forestry/docs/fire-and-aviation/wui/SeeleySwanFirePlan_2013_RevisionFinal.pdf Thompson, M.P., T. Zimmerman, D. Mindar, and M. Taber. 2016. Risk Terminology Primer: Basic Principles and a Glossary for the Wildland Fire Management Community. Fort Collins, CO: USDA Forest Service Rocky Mountain Research Station. Gen. Tech. Rep. RMRS-GTR-349. https://www.fs.usda.gov/treesearch/pubs/50912 Scott, J.H., M.P. Thompson, and D.E. Calkin. 2013. A wildfire risk assessment framework for land and resource management. Fort Collins, CO: USDA Forest Service Rocky Mountain Research Station. Gen. Tech. Rep. RMRS-GTR-315. https://www.fs.fed.us/rmrs/publications/wildfire-risk-assessment-framework-land-and-resource-management Finney, Mark A.; McHugh, Charles W.; Grenfell, Isaac C.; Riley, Karin L.; Short, Karen C. 2011. A simulation of probabilistic wildfire risk components for the continental United States. Stochastic Environmental Research and Risk Assessment. 25: 973-1000.
Description: The IPUMS National Historical Geographic Information System (NHGIS) provides free online access to summary statistics and GIS files for U.S. censuses and other nationwide surveys from 1790 through the present. NHGIS boundary files are derived primarily from the U.S. Census Bureau's TIGER/Line files with numerous additions to represent historical (1790-1980) boundaries that do not appear in TIGER/Line files. For more recent boundary files (1990 or later), NHGIS typically makes only a few key changes to the TIGER/Line source: (1) we merge files that are available only for individual states or counties to produce new nationwide or statewide files, (2) we project the data into Esri's USA Contiguous Albers Equal Area Conic Projected Coordinate System, (3) add a GISJOIN attribute field, which supplies standard identifiers that correspond to the GISJOIN identifiers in NHGIS data tables, (4) we rename files to use the NHGIS naming style and geographic-level codes, (5) we add NHGIS-specific metadata, and (6) most substantially, we erase coastal water areas to produce polygons that terminate at the U.S. coasts and Great Lakes shores.NHGIS derived this shapefile from the U.S. Census Bureau's 2020 TIGER/Line Shapefiles.
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