What are three characteristics of old rivers

Three characteristics of old rivers are it has low gradient and erosive energy. It is characterized by flood plains.

Explanation:

The large sections of water that is moving are Rivers. Some of the rivers will be older than other rivers in earth. For instance when we compare The Mississippi River with the Brazos River, The Mississippi river is much old. When the river gets older some of the characteristics will be associated with it. It might not be found in other rivers that are not older.

Some of the characteristic that are related with an old river are the following:

It will be broader and U shaped It will be moving slow. It is Gentle low gradient It has lower erosive energy It is characterized by flood plains.