Usage examples (7)

• The lower reaches of most streams have aggraded; here, enough gravel has accumulated to promote subsurface flow, except during and immediately after rainfall.
• In this way each part of the fan is aggraded and its symmetric form is preserved.
• Valley trains are deposits of stratified drift with which river valleys have been aggraded.
• When enough water starts moving, it can scour the aggraded riverbeds, sweeping surplus sediment at frightening speeds.