I'm trying to analyse a raster in order to get watersheds at approximate 2 ha size, using flow direction/accumulation.
I've been using the steps outlined below, with initial conditions for cells starting at 2 ha. However whenever I do a raster calculator, I keep getting a raster with only one big black 0.
Raster Calculator @ 12500 cells
Raster to polygon
Am I doing something fundamentally wrong in this build up? Basically I need watersheds as polygons with a size of 2 ha, using a DEM Raster.
Additional information about raster DEM: Raster is about 40 mb, in a projected CRS and a cell size of 0,4 x 0,4 m covering about 420 ha.
X: 5992 Y: 4280
Float32 - Thirty two bit floating point