The parameter Dsmax is the maximum velocity of baseflow for each grid cell. This can be estimated using the saturated hydraulic conductivity, Ksat, for each grid cell multiplied by the slope of the grid cell. The values for Ksat can be averaged for the layers for which baseflow will be included. When working in decimal degrees, the elevation data for the basin should be projected to an equal area map projection, in order to have horizontal dimensions in the same units as the vertical dimensions so that the slopes computed in Arc/Info are meaningful values.