Define a Catchment,drainage Basin,watershed,or River Basin

Q69: A downstream flood is characterised by<br>A) lots

Q70: Which of the following categories accounts for

Q71: Define the gradient of a river.

Q72: What is river avulsion?

Q73: Anastomosed channels have a large number of

Q75: The base level of a stream is

Q76: Of the following choices,in which situation would

Q77: Flash floods are the deadliest type of

Q78: How does an oxbow lake form?

Q79: Flash floods occur in the upper parts