Ive noticed that when I try to project a flow direction raster (D8 format) it sometimes changes values of the cells and makes the output flow direction raster not work. Im keeping same cell size (but switching units). Im assuming this has something to do when how raster is interpolated (Im using Nearest). Anyone have idea/suggestion to force values to stay the same?
@NealBanerjee have you gone over the documentation on...
It might give you some insight on your choices given your projection
It might be better to produce the flow direction from a projected DEM first
Ill check it out - thank you Dan! Ill post if there is an easy change that "fixes" the issue. Definitely usually would produce directly from DEM, but using the NHD High-Resolution datasets which are quite large so thats why was try to extract area I need. Thanks again