calculate channel sed and nutrient processes if inflow > 0 Another eq from Peter - Qmax=Qmean(1+2.66Drainage Area^-.3) interpolate rating curve using peak rate use peakrate as flow rate compute flood plain deposition deposit Particulate P and N in the floodplain trap nitrate and sol P in flood plain - when not simulating flood plain interactions? calculate channel deposition based on fall velocity - SWRRB book assume particle size = 0.03 mm -- median silt size assume bankfull flow depth calculate in channel nutrient losses - input delivery ratio calculate in channel nutrient transformations calc bank erosion calculate radius of curvature calc mass of sediment eroded -> t = bankcut (m) * depth (m) * lengthcut (m) * bd (t/m3) arc length = 0.33 * meander wavelength * sinuosity -> protected length calculate associated nutrients calculate bed erosion no downcutting below equilibrium slope calc critical shear and shear on bottom of channel Pa = N/m^2 * m * m/m critical shear function of d50 calc mass of sediment eroded -> t = m * width (m) * length (km) * 1000 m/km * bd (t/m3) calculate associated nutrients channel sediment budget for output channel nutrient budget for output