A follow-up issue:Eric, related to the link you sent (Raster Extents + Calculator Problems), when I try to set the Environment Settings then Copy Raster, the output does not encompass the entire extent. Can you see where I'm going wrong in my python script? Or should I post this on the Python page? Thank you!
outWorkspace = "D:/GIS_Watf/Output_PrepAnalysis/"
inRaster = "D:/GIS_Watf/Output_wi/d074bhgo_wi"
outRaster = outWorkspace + "e074bhgo"
#extent is xmin ymin xmax ymax
arcpy.env.extent = arcpy.Extent(-2638000, 1870000, 2210000, 5923000)
# Process: Copy Raster
arcpy.CopyRaster_management(inRaster, outRaster, "", "", "", "NONE", "NONE", "")