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These are bare-Earth digital elevation models covering U.S. Forest Service Southwest Region (R3) of varying years, varying resolutions, and varying geographic extents. This data is served to support Forest Service strategic goals, including: sustain our National Forests and Grasslands, deliver benefits to the public, apply knowledge globally, and excel as a high-performing agency, as well as the U.S. Dept. of Agriculture's goals to combat climate change and ensure America's agricultural system is equitable, resilient, and prosperous.
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| summary:
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These are bare-Earth digital elevation models covering U.S. Forest Service Southwest Region (R3) of varying years, varying resolutions, and varying geographic extents. This data is served to support Forest Service strategic goals, including: sustain our National Forests and Grasslands, deliver benefits to the public, apply knowledge globally, and excel as a high-performing agency, as well as the U.S. Dept. of Agriculture's goals to combat climate change and ensure America's agricultural system is equitable, resilient, and prosperous.
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| accessInformation:
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These datasets were provided by the U.S. Forest Service Southwest Region (R3) and are served by the U.S. Forest Service Geospatial Technology & Applications Center (GTAC), in cooperation with the U.S. Department of the Interior's Geospatial Platform (GeoPlatform), as part of the Interdepartmental Imagery Publication Platform (IIPP).
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thumbnail/thumbnail.png
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5000
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| typeKeywords:
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["ArcGIS Server","Data","Image Service","Service"]
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| description:
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<DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN>This is a collection of bare-Earth digital elevation models covering selected U.S. Forest Service and adjoining lands in the Southwest Region, encompassing Arizona and New Mexico. The data are presented in a time-enabled format, allowing the end-user to view available data year-by-year, or all available years at once, within a GIS system. The data encompass varying years, varying resolutions, and varying geographic extents, dependent upon available data as provided by the region. Bare-Earth DEMs, also commonly called Digital Terrain Models (DTM), represent the ground topography after removal of persistent objects such as vegetation and buildings, and therefore show the natural terrain.</SPAN></P><P STYLE="margin:1 1 1 0;"><SPAN>The data contains an attribute table. Notable attributes that may be of interest to an end-user are:</SPAN></P><UL><LI><P><SPAN>lowps: the pixel size of the source raster, given in meters.</SPAN></P></LI><LI><P><SPAN>highps: the pixel size of the top-most pyramid for the raster, given in meters.</SPAN></P></LI><LI><P><SPAN>beginyear: the first year of data acquisition for an individual dataset.</SPAN></P></LI><LI><P><SPAN>endyear: the final year of data acquisition for an individual dataset.</SPAN></P></LI><LI><P><SPAN>dataset_name: the name of the individual dataset within the collection.</SPAN></P></LI><LI><P><SPAN>metadata: A URL link to a file on IIPP's Portal containing metadata pertaining to an individual dataset within the image service.</SPAN></P></LI><LI><P><SPAN>resolution: The pixel size of the source raster, given in meters.</SPAN></P></LI></UL><P STYLE="font-size:16pt"><SPAN STYLE="font-size:12pt">Terrain-related imagery are primarily derived from Lidar, stereoscopic aerial imagery, or Interferometric Synthetic Aperture Radar datasets. Consequently, these derivatives inherit the limitations and uncertainties of the parent sensor and platform and the processing techniques used to produce the imagery. The terrain images are orthographic; they have been georeferenced and displacement due to sensor orientation and topography have been removed, producing data that combines the characteristics of an image with the geometric qualities of a map. The orthographic images show ground features in their proper positions, without the distortion characteristic of unrectified aerial or satellite imagery. Digital orthoimages produced and used within the Forest Service are developed from imagery acquired through various national and regional image acquisition programs. The resulting orthoimages can be directly applied in remote sensing, GIS and mapping applications. They serve a variety of purposes, from interim maps to references for Earth science investigations and analysis. Because of the orthographic property, an orthoimage can be used like a map for measurement of distances, angles, and areas with scale being constant everywhere. Also, they can be used as map layers in GIS or other computer-based manipulation, overlaying, and analysis. An orthoimage differs from a map in a manner of depiction of detail; on a map only selected detail is shown by conventional symbols whereas on an orthoimage all details appear just as in original aerial or satellite imagery.</SPAN></P><P STYLE="font-size:16pt"><SPAN STYLE="font-size:12pt">Tribal lands have been masked from this public service in accordance with Tribal agreements.</SPAN></P></DIV></DIV></DIV>
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<DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN>The USDA Forest Service makes no warranty, expressed or implied, including the warranties of merchantability and fitness for a particular purpose, and assumes no legal liability or responsibility for the accuracy, reliability, completeness, or utility of these geospatial data, or for the improper or incorrect use of these geospatial data. These geospatial data and related maps or graphics are not legal documents and are not intended to be used as such. The data and maps may not be used to determine title, ownership, legal descriptions or boundaries, legal jurisdiction, or restrictions that may be in place on either public or private land. Natural hazards may or may not be depicted on the data and maps, and land users should exercise due caution. The data are dynamic and may change over time. The user is responsible to verify the limitations of the geospatial data and to use the data accordingly.</SPAN></P></DIV></DIV></DIV>
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| catalogPath:
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| title:
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BareEarthDEM_multiYear_USFS_R3_Southwest_multiRes_Public
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| type:
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Image Service
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| url:
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| tags:
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["Bare Earth","DEM","Digital Elevation Model","DTM","Digital Terrain Model","USFS","Forest Service","Geospatial Technology & Applications Center","GTAC","IIPP","Interdepartmental Imagery Publication Platform","Southwest Region","R3","Region 3","New Mexico","Carson","Santa Fe","Hermits Peak","Enchanted Circle","2014","2017","2022","2023","2024"]
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| culture:
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en-US
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| portalUrl:
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| name:
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BareEarthDEM_multiYear_USFS_R3_Southwest_multiRes_Public
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| guid:
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| minScale:
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5000000
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| spatialReference:
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WGS_1984_Web_Mercator_Auxiliary_Sphere
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