The elevation points found in this layer were derived for the 1:24,000 scale United States Geologic Survey (USGS) map series for the region. The majority of the points came from the digital United States Forest Service (USFS) Cartographic Feature Files (CFFs). Areas in which digital source could not be found where derived by digitizing the features off the USGS 1,24,000 scale quads. This was done by digitizing the points off the USGS maps.
This layer is sourced from gis.cdatribe-nsn.gov.
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