typically occurring every one to two years, regardless of climate or topography. Sedimentation rates for a three-day flood of the Meuse and Rhine Rivers in 1993 found average sedimentation rates in the floodplain of between 0.57 and 1.0 kg/m². Higher rates were found on the levees (4 kg/m² or more) and on low-lying areas (1.6 kg/m²).

Sedimentation from the overbank flow is concentrated on natural levees, crevasse splays,