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 add precip to inflow - km * m * 1000 m/km * ha/10000 m2 = ha m3 = 10. * mm * ha 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? if flood plain link - fill wetlands to emergency fill wetland storage to emergency volume calculate overbank volume left to fill wetland add sediment deposition to calculate mm of deposition over the flood plain later calculate channel deposition based on fall velocity - SWRRB book assume particle size = 0.03 mm -- median silt size assume bankfull flow depth 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