I’ve learned quite a bit over the last few weeks, so I’m re-doing some of my earlier entries.
Notes for self and others:
Based on local knowledge I’ve been able to determine that the
PEMA ortho images are newer than the NYS Orthos, but not by much; these are both newer than Mapbox, but Mapbox is higher resolution/clearer.
both PEMA ortho and NY Ortho appear to be positioned pretty well in the Great Bend area, but Mapbox needs to be adjusted.
ESRI world seems to use the NY Ortho in this area and their positioning is shifted slightly to the north relative to the PEMA and NYS Orthos, but it seems to be registered fairly well overall. I would tend to believe ESRI in general, but the state Orthos may be better aligned for this area. Either way, it’s a negligable shift.
Bing: don’t bother; horrible for this rural area.
Can’t tell the vintage/date for the USGS 3DEP DEM model in this area. There is a much higher resolution Lidar dataset on the USGS website.