River Training Works MCQ with answer and solution

Concept

Aggrading and degrading rivers

Step-by-step solution

1. An aggrading river deposits sediment, raising its bed (silting river). 2. A degrading river erodes its bed (scouring river).

Explanation

In an aggrading river the sediment load exceeds the carrying capacity, so silt is deposited and the bed level rises.

Why the other options are wrong

A degrading river scours its bed. A stable river is in balance. A braided river is a pattern, not a silting/scouring classification.

Shortcut

Aggrading = silting; degrading = scouring.

Common mistake

Choosing the braided river.