Question 1

The probability that a 100 year flood will occur on any given river this year is:

Accepted Answer

A)  0.001%. 
B)  0.01%. 
C)  1%. 
D)  10%. 
E)  100%. 
A)  0.001%. 
B)  0.01%. 
C)  1%. 
D)  10%. 
E)  100%.

Question 2

Match the following options to its correct definition.
-floodwalls

Accepted Answer

A)  structures that increases the level to which a river can rise before it overflows 
B)  a type of channel alteration that allows water to flow out of the channel at specific points where it will not be damaging 
C)  gates that open and move water away from major population centers during times of high river stage 
D)  locally constructed reservoirs that decrease the rate at which surface water runs into rivers 
E)  a structure built to store extra discharge from a river; can be used to generate power, create a recreational area, and control water levels for shipping 
A)  structures that increases the level to which a river can rise before it overflows 
B)  a type of channel alteration that allows water to flow out of the channel at specific points where it will not be damaging 
C)  gates that open and move water away from major population centers during times of high river stage 
D)  locally constructed reservoirs that decrease the rate at which surface water runs into rivers 
E)  a structure built to store extra discharge from a river; can be used to generate power, create a recreational area, and control water levels for shipping

Question 3

What is a delta?

Accepted Answer

A)  a general term given for sediment deposited by the river 
B)  the buildup of river sediments at the base of a mountain 
C)  forms when sediment-laden stream flows into standing water 
D)  a low area adjacent to a stream that is subject to flooding 
E)  where flowing water assumes a series of S-shaped curves 
A)  a general term given for sediment deposited by the river 
B)  the buildup of river sediments at the base of a mountain 
C)  forms when sediment-laden stream flows into standing water 
D)  a low area adjacent to a stream that is subject to flooding 
E)  where flowing water assumes a series of S-shaped curves

Question 4

What is a river's base level?

Accepted Answer

A)  the amount of water flowing in a river at any given time 
B)  the location in a river where water is continuously present and the main current flows 
C)  an area where surface runoff from rain flows together towards lower areas 
D)  where tributaries merge into a watershed's main river 
E)  the elevation where a river cannot flow further or erode deeper 
A)  the amount of water flowing in a river at any given time 
B)  the location in a river where water is continuously present and the main current flows 
C)  an area where surface runoff from rain flows together towards lower areas 
D)  where tributaries merge into a watershed's main river 
E)  the elevation where a river cannot flow further or erode deeper

Question 5

Driving through flooded roads is ok to do in some situations.

Accepted Answer

A) True 
 B)False

Question 6

The boundaries between watersheds of all sizes are elevated areas called:

Accepted Answer

A)  runoff. 
B)  tributaries. 
C)  divides. 
D)  trunk rivers. 
E)  channels. 
A)  runoff. 
B)  tributaries. 
C)  divides. 
D)  trunk rivers. 
E)  channels.

Question 7

Match the following options to its correct definition.
-flood-control dam

Accepted Answer

A)  structures that increases the level to which a river can rise before it overflows 
B)  a type of channel alteration that allows water to flow out of the channel at specific points where it will not be damaging 
C)  gates that open and move water away from major population centers during times of high river stage 
D)  locally constructed reservoirs that decrease the rate at which surface water runs into rivers 
E)  a structure built to store extra discharge from a river; can be used to generate power, create a recreational area, and control water levels for shipping 
A)  structures that increases the level to which a river can rise before it overflows 
B)  a type of channel alteration that allows water to flow out of the channel at specific points where it will not be damaging 
C)  gates that open and move water away from major population centers during times of high river stage 
D)  locally constructed reservoirs that decrease the rate at which surface water runs into rivers 
E)  a structure built to store extra discharge from a river; can be used to generate power, create a recreational area, and control water levels for shipping

Question 8

What is NOT true about the 100-year flood?

Accepted Answer

A)  It is commonly used in communities located near rivers as a guide for planning decisions. 
B)  It is defined as the flood that has a 100 year recurrence interval. 
C)  Its estimated discharge can be calculated using a graph called a rating curve. 
D)  It is a flood that occurs every 50 years. 
E)  It has a 1 in 100 chance of occurring. 
A)  It is commonly used in communities located near rivers as a guide for planning decisions. 
B)  It is defined as the flood that has a 100 year recurrence interval. 
C)  Its estimated discharge can be calculated using a graph called a rating curve. 
D)  It is a flood that occurs every 50 years. 
E)  It has a 1 in 100 chance of occurring.

Question 9

"Levee construction may reduce local flood hazards, but they may worsen flood hazards elsewhere along a stream." What is a levee? Do you agree with the statement? Explain.

Accepted Answer

A levee is a man-made structure built al

Question 10

Match the following options to its correct definition.
-detention pond

Accepted Answer

A)  structures that increases the level to which a river can rise before it overflows 
B)  a type of channel alteration that allows water to flow out of the channel at specific points where it will not be damaging 
C)  gates that open and move water away from major population centers during times of high river stage 
D)  locally constructed reservoirs that decrease the rate at which surface water runs into rivers 
E)  a structure built to store extra discharge from a river; can be used to generate power, create a recreational area, and control water levels for shipping 
A)  structures that increases the level to which a river can rise before it overflows 
B)  a type of channel alteration that allows water to flow out of the channel at specific points where it will not be damaging 
C)  gates that open and move water away from major population centers during times of high river stage 
D)  locally constructed reservoirs that decrease the rate at which surface water runs into rivers 
E)  a structure built to store extra discharge from a river; can be used to generate power, create a recreational area, and control water levels for shipping

Question 11

Describe two ways in which urbanization (city development) may increase local flood hazards.

Accepted Answer

1. Increased impervious surfaces: As cit

Question 12

What is the mathematical relationship between discharge, area, and velocity of a river?

Accepted Answer

A)  discharge = area + velocity 
B)  discharge = area * velocity 
C)  area= discharge - velocity 
D)  area = discharge + velocity 
E)  discharge = (area * velocity)/70 
A)  discharge = area + velocity 
B)  discharge = area * velocity 
C)  area= discharge - velocity 
D)  area = discharge + velocity 
E)  discharge = (area * velocity)/70

Question 13

Match the following options to its correct definition.
-diversion channels

Accepted Answer

A)  structures that increases the level to which a river can rise before it overflows 
B)  a type of channel alteration that allows water to flow out of the channel at specific points where it will not be damaging 
C)  gates that open and move water away from major population centers during times of high river stage 
D)  locally constructed reservoirs that decrease the rate at which surface water runs into rivers 
E)  a structure built to store extra discharge from a river; can be used to generate power, create a recreational area, and control water levels for shipping 
A)  structures that increases the level to which a river can rise before it overflows 
B)  a type of channel alteration that allows water to flow out of the channel at specific points where it will not be damaging 
C)  gates that open and move water away from major population centers during times of high river stage 
D)  locally constructed reservoirs that decrease the rate at which surface water runs into rivers 
E)  a structure built to store extra discharge from a river; can be used to generate power, create a recreational area, and control water levels for shipping

Question 14

Match the following options to its correct definition.
-runoff

Accepted Answer

A)  process by which material is dragged, rolled, skipped, or bounced over the river bottom 
B)  location along a river where significant erosion can occur 
C)  water that flows into rivers when the ground is saturated 
D)  watershed's main river where tributaries merge 
E)  finer particles of material carried by a river 
A)  process by which material is dragged, rolled, skipped, or bounced over the river bottom 
B)  location along a river where significant erosion can occur 
C)  water that flows into rivers when the ground is saturated 
D)  watershed's main river where tributaries merge 
E)  finer particles of material carried by a river

Question 15

A natural levee is:

Accepted Answer

A)  mounds of alluvium built up along the sides of a stream. 
B)  a type of dam. 
C)  an S-shaped river. 
D)  a lake created by a short cut in a meander. 
E)  a fan-shaped deposit. 
A)  mounds of alluvium built up along the sides of a stream. 
B)  a type of dam. 
C)  an S-shaped river. 
D)  a lake created by a short cut in a meander. 
E)  a fan-shaped deposit.

Question 16

Draw a meandering river and label the cut bank and point bar. Describe how this type of river can create an oxbow lake.

Accepted Answer

To draw a meandering river, start by dra

Question 17

Answer the following question(s) using the information provided in the graph below.
  
-What is x-axis of the graph?

Accepted Answer

A)  discharge 
B)  intensity 
C)  elevation above sea level 
D)  time 
E)  soil content of the stream 
A)  discharge 
B)  intensity 
C)  elevation above sea level 
D)  time 
E)  soil content of the stream

Question 18

Engineers can physically restructure rivers to reduce probability of flooding by:

Accepted Answer

A)  decreasing a river's discharge. 
B)  increase a channel's cross sectional area. 
C)  allowing a river's flow velocity to increase in response to increase discharge. 
D)  building dams. 
E)  all of the above. 
A)  decreasing a river's discharge. 
B)  increase a channel's cross sectional area. 
C)  allowing a river's flow velocity to increase in response to increase discharge. 
D)  building dams. 
E)  all of the above.

Question 19

Hydrographs for flash floods look different than those for riverine floods.

Accepted Answer

A) True 
 B)False

Question 20

What is flash flood? What are other types of floods?

Accepted Answer

A flash flood is a rapid flooding of low

The probability that a 100 year flood will occur on any given river this year is:

Match the following options to its correct definition. -floodwalls

What is a delta?

What is a river's base level?

Driving through flooded roads is ok to do in some situations.

The boundaries between watersheds of all sizes are elevated areas called:

Match the following options to its correct definition. -flood-control dam

What is NOT true about the 100-year flood?

"Levee construction may reduce local flood hazards, but they may worsen flood hazards elsewhere along a stream." What is a levee? Do you agree with the statement? Explain.

Match the following options to its correct definition. -detention pond

Describe two ways in which urbanization (city development) may increase local flood hazards.

What is the mathematical relationship between discharge, area, and velocity of a river?

Match the following options to its correct definition. -diversion channels

Match the following options to its correct definition. -runoff

A natural levee is:

Draw a meandering river and label the cut bank and point bar. Describe how this type of river can create an oxbow lake.

Answer the following question(s) using the information provided in the graph below. -What is x-axis of the graph?

Engineers can physically restructure rivers to reduce probability of flooding by:

Hydrographs for flash floods look different than those for riverine floods.

What is flash flood? What are other types of floods?

What Does Living With Earth Mean

Earth Systems

The Dynamic Geosphere and Plate Tectonics

Geosphere Materials

Earthquakes

Volcanoes

Unstable Land

Changing Coasts

Water Resources

Soil Resources

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Atmosphere Resources and Climate Change

Managing Peoples Environmental Impact

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Exam 7: Rivers and Flooding

The probability that a 100 year flood will occur on any given river this year is:

Match the following options to its correct definition. -floodwalls

What is a delta?

What is a river's base level?

Driving through flooded roads is ok to do in some situations.

The boundaries between watersheds of all sizes are elevated areas called:

Match the following options to its correct definition. -flood-control dam

What is NOT true about the 100-year flood?

"Levee construction may reduce local flood hazards, but they may worsen flood hazards elsewhere along a stream." What is a levee? Do you agree with the statement? Explain.

Match the following options to its correct definition. -detention pond

Describe two ways in which urbanization (city development) may increase local flood hazards.

What is the mathematical relationship between discharge, area, and velocity of a river?

Match the following options to its correct definition. -diversion channels

Match the following options to its correct definition. -runoff

A natural levee is:

Draw a meandering river and label the cut bank and point bar. Describe how this type of river can create an oxbow lake.

Answer the following question(s) using the information provided in the graph below. -What is x-axis of the graph?

Engineers can physically restructure rivers to reduce probability of flooding by:

Hydrographs for flash floods look different than those for riverine floods.

What is flash flood? What are other types of floods?

What Does Living With Earth Mean

Earth Systems

The Dynamic Geosphere and Plate Tectonics

Geosphere Materials

Earthquakes

Volcanoes

Unstable Land

Changing Coasts

Water Resources

Soil Resources

Mineral Resources

Energy Resources

Atmosphere Resources and Climate Change

Managing Peoples Environmental Impact

Filters