r.sim.water Overland flow hydrologic simulation using path sampling method (SIMWE). Raster (r.*) ParameterRaster|elevation|Name of the elevation raster map [m]|False ParameterRaster|dx|Name of the x-derivatives raster map [m/m]|False ParameterRaster|dy|Name of the y-derivatives raster map [m/m]|False ParameterRaster|rain|Name of the rainfall excess rate (rain-infilt) raster map [mm/hr]|False ParameterString|rain_value|Rainfall excess rate unique value [mm/hr]|50 ParameterRaster|infil|Name of the runoff infiltration rate raster map [mm/hr]|False ParameterString|infil_value|Runoff infiltration rate unique value [mm/hr]|0.0 ParameterRaster|man|Name of the Mannings n raster map|False ParameterString|man_value|Mannings n unique value|0.1 ParameterRaster|flow_control|Name of the flow controls raster map (permeability ratio 0-1)|False ParameterString|nwalkers|Number of walkers, default is twice the no. of cells| ParameterString|niterations|Time used for iterations [minutes]|10 ParameterString|output_step|Time interval for creating output maps [minutes]|2 ParameterString|diffusion_coeff|Water diffusion constant|0.8 ParameterString|hmax|Threshold water depth [m] (diffusion increases after this water depth is reached)|0.3 ParameterString|halpha|Diffusion increase constant|4.0 ParameterString|hbeta|Weighting factor for water flow velocity vector|0.5 ParameterBoolean|-t|Time-series output|True OutputRaster|depth|Water depth [m] OutputRaster|discharge|Water discharge [m3/s] OutputRaster|error|Simulation error [m]