Raster Dataset
Tags
Blue River Watershed,
topography, HJ Andrews Experimental Forest, Oregon, DEM, Willamette Basin
DEMs are used to support a wide range of geographic information system (GIS) applications, including: surface hydrologic modeling, slope and aspect determination, viewshed analysis, fire modeling, contouring, transportation route planning, and profile generation. DEMs are also used to rectify aerial photography in the production of Digital Orthophoto Quads (DOQs)
30 Meter Digital Elevation Model (DEM) for the HJ Andrews Experimental Forest. A Digital Elevation Model (DEM) is a digital data file containing an array of elevation information over a portion of the earth's surface. This array is developed using information extracted from digitized elevation contours from PBS maps. A deatiled description of USGS DEMs can be found at http://rockyweb.cr.usgs.gov/elevation/dpi_dem.html as well as a users guide at ftp://mapping.usgs.gov/pub/ti/DEM/demguide/dugdem.txt.
There are no credits for this item.
While substantial efforts are made to ensure the accuracy of data and documentation, complete accuracy of data sets cannot be guaranteed. All data are made available "as is". The Andrews LTER shall not be liable for damages resulting from any use or misinterpretation of data sets.
Extent
West | -122.269593 | East | -122.096254 |
North | 44.286492 | South | 44.192359 |
Maximum (zoomed in) | 1:5,000 |
Minimum (zoomed out) | 1:150,000,000 |
ground condition
Access constraints: Available on-line
Use constraints: See data access policy at www.fsl.orst.edu/lter (especially the data use policy)
While substantial efforts are made to ensure the accuracy of data and documentation, complete accuracy of data sets cannot be guaranteed. All data are made available "as is". The Andrews LTER shall not be liable for damages resulting from any use or misinterpretation of data sets.
Obtain information off of WWW site, call contact person for special requests.
Call contact person for instructions and costs.
elevation in meters
fsl metadata document
elevation in meters
fsl metadata documentation
30 Meter Digital Elevation Model (DEM) for the HJ Andrews Experimental Forest. A Digital Elevation Model (DEM) is a digital data file containing an array of elevation information over a portion of the earth's surface. This array is developed using information extracted from digitized elevation contours from PBS maps. A deatiled description of USGS DEMs can be found at http://rockyweb.cr.usgs.gov/elevation/dpi_dem.html as well as a users guide at ftp://mapping.usgs.gov/pub/ti/DEM/demguide/dugdem.txt.
DEMs are used to support a wide range of geographic information system (GIS) applications, including: surface hydrologic modeling, slope and aspect determination, viewshed analysis, fire modeling, contouring, transportation route planning, and profile generation. DEMs are also used to rectify aerial photography in the production of Digital Orthophoto Quads (DOQs)
ground condition
Available on-line
See data access policy at www.fsl.orst.edu/lter (especially the data use policy)
Good
USFS Geometronics Service Center
The original dems for the 6 quads that cover the HJA were mismatched by
method (2 USGS quads were done by analytical stereo plotter and 4 GSC quads
were developed using scanned contour) and were not edgematched. New
edgematched quads were delivered by Region 6 in late 1994 - all using the
GSC method.
960801 - previous versions of this dem were incorrectly
shifted due to confusion over the datum. This unshifted
dem is based on the 1927 North American Datum.
While substantial efforts are made to ensure the accuracy of data and documentation, complete accuracy of data sets cannot be guaranteed. All data are made available "as is". The Andrews LTER shall not be liable for damages resulting from any use or misinterpretation of data sets.
Obtain information off of WWW site, call contact person for special requests.