I'm trying to determine the slope of sampling points in QGIS 3.4, but the values are all ~89.99°, which I know is incorrect. Pretty sure it's an issue when creating the slope raster.
Based on the steps detailed below, is it clear to anyone what I'm doing wrong?
My points and ⅓ arc-second USGS DEM are set to CRS EPSG:4269 - NAD83.
Then I use the point sampling tool with the slope raster and points to generate the slope values. These are all ~89.99°, which isn't right.