I have been tasked with creating an open-source hydrology dataset for a community group. To do this I have exported the flow direction and flow accumulation rasters from ArcMap as TIFF files and then imported them into QGIS. However, a number of the flow accumulation rasters fail to import properly giving values of 0 rather than the range in the original ArcMap raster file. Can anyone help?
Flow accumulation usually stores very large numbers, because cell value= count of discharging cells. It is unlikely that tif is capable of storing values in this range