Shape matching of raster files
I have a question related to the shapes of my GIS data. My goal is to quantify ecosystem services (Carbon, SDR, NDR, and Water Yield models) in a watershed, but as the InVEST manual suggests (page 140), some data, such as DEM, must extend beyond the watershed of interest, rather than being clipped to the watershed boundaries. I'm clipping my raster files to match with counties boundaries, which are beyond the watershed I'm working on. Is this a correct approach?
Please find attached a figure where you can see the counties boundaries and the watershed boundaries.