I am trying to run the
r.sim.water in GRASS. I have calculated the partial derivatives dx and dy rater map using
r.slope.aspect. I am using this elevation map  to get the time-series depth map. But I got the output file is not being saved in the "outputDepth" rater map (says failed to open, on seeing the metadata).
r.sim.water -t elevin=testElevationLive@sampleMapSet dxin=dx@sampleMapSet dyin=dy@sampleMapSet rain_val=150 manin_val=0.015 depth=outputDepth nwalk=50000 outiter=20
Min elevation = 43.00 m Max elevation = 103.00 m Mean Source Rate (rainf. excess or sediment) = 0.000030 m/s or kg/m2s Mean flow velocity = 21.486384 m/s Mean Mannings = 0.015121 Number of iterations = 647482826 cells Time step = 0.00 s
and on the cmd line:
Command 'd.rast map=outputDepth@sampleMapSet' failed Details: Raster map <outputDepth@sampleMapSet> not found
Further I am not getting the time-series data output, by using the -t flag and setting the output_step to 20 as suggested here http://grass.osgeo.org/grass70/manuals/r.sim.water.html.