Exam 15: River Systems and Landforms

Nickpoints migrate downstream.

Braided streams are not found in

Discuss the concept of the graded stream. Do most streams approximate a graded stream? Why or why not?

Flood control often produces conditions of worse flooding in subsequent high-water events.

Describe five common drainage patterns and the conditions that typically form them.

Rivers have played a relatively minor role in the geography of human history.

Overland flow can concentrate in small grooves called ________, which can enlarge to form ________.

The mouth of a river is where the river reaches a base level.

A flood recurrence interval of 100 years means that floods of that size will occur only once every 100 years.

Deforestation in the headwater regions of a river can cause the river to flood more frequently in downstream areas.

The total possible load a stream can transport is its ________, whereas a stream's ability to move particles of specific size is its ________.

A perennial stream can go months and even years between flow events.

Variations in rock resistance, climate, and hydrology can influence drainage patterns.

Describe the various ways in which streams can transport material.

A meandering stream is one that is

A(n) ________ is a stream maintain an equilibrium between the processes of erosion and deposition and, therefore degradation and aggradation.

Excess sediment may result in which of the following channel patterns?

The higher the sinuosity, the straighter the stream channel.

Give the equation for stream discharge. What happens to stream velocity if discharge and depth remain the same, but width increases?

Which of the following is incorrect regarding floodplains?