GEOL 100: Surface Water

hooray

What are streams? (5 things)

Sources of…

1. energy

2. transportation

3. irrigation

4. recreation

And includes any surface water flowing in a channel 

What is a drainage basin? (Hint: total)

The total area drained by a stream

What are drainage patterns dependent on? Where do they form?

1. The underlying geologic structures and

2. They form within drainage basins 

What creates canyons? What is it caused by?

1. Vertical erosion

2. It is caused by rivers and streams 

How deep will the Grand Canyon get?

Base level

What kind of erosion causes meanders and flood plains? What causes that erosion?

1. Lateral erosion

2. It is caused by rivers and streams

What cause may lead to the creation of incised meanders?

The tectonic uplift of stream channels

What does stream gradient control? (2)

Stream erosion and deposition 

What is a natural process that occurs on all rivers and streams?

Flooding 

What triggers flash floods?

Sudden, heavy thunderstorms 

What three things results in urban flooding?

Concrete, asphalt, and storm sewers

What are some flood control measures? (4)

Dams, levees, flood walls, and wise land-use planning