aggrade
/əˈɡreɪd/
verb
- To build up the level of a riverbed, floodplain, or other land surface by depositing sediment.
- The river continues to aggrade its channel after the flood.
- Engineers are studying how dams affect a river's ability to aggrade downstream.
- Over thousands of years, the stream aggraded the valley floor with silt and gravel.
Antonyms