Question 1

Suitable uses for floodplain land include all of the following except

Accepted Answer

A)  Grazing land for livestock. 
B)  A municipal sewage treatment plant. 
C)  A municipal park. 
D)  A golf course. 
A)  Grazing land for livestock. 
B)  A municipal sewage treatment plant. 
C)  A municipal park. 
D)  A golf course.

Question 2

What develops a pattern of many complex channels that divide and rejoin and when the sediment load is considerably larger in relationship to the volume of water?

Accepted Answer

A)  Oxbow lake 
B)  Meander 
C)  Braided stream 
D)  Floodplain 
A)  Oxbow lake 
B)  Meander 
C)  Braided stream 
D)  Floodplain

Question 3

Below ground,water moves through soils and rocks by a process known as

Accepted Answer

A)  Infiltration. 
B)  Percolation. 
C)  Seepage. 
D)  Discharge. 
A)  Infiltration. 
B)  Percolation. 
C)  Seepage. 
D)  Discharge.

Question 4

Only surface runoff reaches streams; subsurface water is stagnant and does not move.

Accepted Answer

A) True 
 B)False

Question 5

Artificial levees built along a stream

Accepted Answer

A)  Effectively stop all flooding, as along the Mississippi River. 
B)  May, if breached, trap floodwaters behind them. 
C)  Reduce stream stages by moving water faster. 
D)  All of the choices are correct. 
A)  Effectively stop all flooding, as along the Mississippi River. 
B)  May, if breached, trap floodwaters behind them. 
C)  Reduce stream stages by moving water faster. 
D)  All of the choices are correct.

Question 6

All other factors being equal,the risk of stream flooding is probably greatest

Accepted Answer

A)  In an area of high rainfall evenly distributed through the year. 
B)  In a very cold climate where snow rarely melts. 
C)  In an area that receives its rain mostly in a few intense storms. 
D)  In an area that receives little rain. 
A)  In an area of high rainfall evenly distributed through the year. 
B)  In a very cold climate where snow rarely melts. 
C)  In an area that receives its rain mostly in a few intense storms. 
D)  In an area that receives little rain.

Question 7

A stream's base level is the lowest level to which it can cut down or erode its channel.

Accepted Answer

A) True 
 B)False

Question 8

Flash floods may be especially likely where runoff water is confined to a narrow valley.

Accepted Answer

A) True 
 B)False

Question 9

A drainage basin

Accepted Answer

A)  Includes the area from which surface water flows into a stream segment. 
B)  For a river includes all the drainage basins for that river's tributaries. 
C)  Increases in size and proportion to the size of the stream or river it feeds, for the same climate. 
D)  All of the choices are correct. 
A)  Includes the area from which surface water flows into a stream segment. 
B)  For a river includes all the drainage basins for that river's tributaries. 
C)  Increases in size and proportion to the size of the stream or river it feeds, for the same climate. 
D)  All of the choices are correct.

Question 10

The height of the surface of the water is at any given point is indicated by the stage of the stream.

Accepted Answer

A) True 
 B)False

Question 11

An increase in sedimentation along a stream can be caused by

Accepted Answer

A)  A recent forest fire. 
B)  A beaver dam. 
C)  Fish spawning. 
D)  Animal migration. 
A)  A recent forest fire. 
B)  A beaver dam. 
C)  Fish spawning. 
D)  Animal migration.

Question 12

Constructing levees may increase the amount of property at risk from future flooding by encouraging floodplain development.

Accepted Answer

A) True 
 B)False

Question 13

Because upstream floods affect localized areas,they are more likely to be brief than are downstream floods.

Accepted Answer

A) True 
 B)False

Question 14

A fan-shaped pile of sediment deposited at a stream's mouth is a

Accepted Answer

A)  Delta. 
B)  Alluvial fan. 
C)  Discharge. 
D)  A or B. 
A)  Delta. 
B)  Alluvial fan. 
C)  Discharge. 
D)  A or B.

Question 15

A diversion channel is used to shorten a stream and increase its gradient.

Accepted Answer

A) True 
 B)False

Question 16

A flood stage is reached when the stream stage supersedes the

Accepted Answer

A)  Bank width. 
B)  Bank length. 
C)  Bank height. 
D)  Bank stage. 
A)  Bank width. 
B)  Bank length. 
C)  Bank height. 
D)  Bank stage.

Question 17

Plants can reduce the risk of flooding by consuming water,keeping soil loose and permeable and slowing surface runoff.

Accepted Answer

A) True 
 B)False

Question 18

A dam breaks and stream stage is being monitored just below the dam and several kilometers downstream.Which of the following is true?

Accepted Answer

A)  The upstream hydrograph will show a lower, broader peak. 
B)  The flood will produce identically shaped peaks on the hydrographs at both places. 
C)  The downstream hydrograph will show a lower, broader peak. 
D)  Overall stream discharge will be unaffected; hydrographs will show no changes. 
A)  The upstream hydrograph will show a lower, broader peak. 
B)  The flood will produce identically shaped peaks on the hydrographs at both places. 
C)  The downstream hydrograph will show a lower, broader peak. 
D)  Overall stream discharge will be unaffected; hydrographs will show no changes.

Question 19

A stream generates its own floodplain by

Accepted Answer

A)  Erosion during meander migration. 
B)  Sediment deposition during meander migration. 
C)  Sediment deposition during flooding. 
D)  All of the choices are correct. 
A)  Erosion during meander migration. 
B)  Sediment deposition during meander migration. 
C)  Sediment deposition during flooding. 
D)  All of the choices are correct.

Question 20

Most human activities tend to reduce flood hazards,so the frequency of floods of a given size has been decreasing for nearly all streams.

Accepted Answer

A) True 
 B)False

Suitable uses for floodplain land include all of the following except

What develops a pattern of many complex channels that divide and rejoin and when the sediment load is considerably larger in relationship to the volume of water?

Below ground,water moves through soils and rocks by a process known as

Only surface runoff reaches streams; subsurface water is stagnant and does not move.

Artificial levees built along a stream

All other factors being equal,the risk of stream flooding is probably greatest

A stream's base level is the lowest level to which it can cut down or erode its channel.

Flash floods may be especially likely where runoff water is confined to a narrow valley.

A drainage basin

The height of the surface of the water is at any given point is indicated by the stage of the stream.

An increase in sedimentation along a stream can be caused by

Constructing levees may increase the amount of property at risk from future flooding by encouraging floodplain development.

Because upstream floods affect localized areas,they are more likely to be brief than are downstream floods.

A fan-shaped pile of sediment deposited at a stream's mouth is a

A diversion channel is used to shorten a stream and increase its gradient.

A flood stage is reached when the stream stage supersedes the

Plants can reduce the risk of flooding by consuming water,keeping soil loose and permeable and slowing surface runoff.

A dam breaks and stream stage is being monitored just below the dam and several kilometers downstream.Which of the following is true?

A stream generates its own floodplain by

Most human activities tend to reduce flood hazards,so the frequency of floods of a given size has been decreasing for nearly all streams.

Planet and Population: An Overview

Rocks and Minerals-A First Look

Plate Tectonics

Earthquakes

Volcanoes

Coastal Zones and Processes

Mass Movements

Ice and Glaciers,wind and Deserts

Climate-Past, present, and Future

Ground Water and Water Resources

Weathering, erosion, and Soil Resources

Mineral and Rock Resources

Energy Resources-Fossil Fuels

Energy Resources-Alternative Sources

Waste Disposal

Water Pollution

Air Pollution

Environmental Law and Policy

Land-Use Planning and Engineering Geology

Filters

Exam 6: Streams and Flooding

Suitable uses for floodplain land include all of the following except

What develops a pattern of many complex channels that divide and rejoin and when the sediment load is considerably larger in relationship to the volume of water?

Below ground,water moves through soils and rocks by a process known as

Only surface runoff reaches streams; subsurface water is stagnant and does not move.

Artificial levees built along a stream

All other factors being equal,the risk of stream flooding is probably greatest

A stream's base level is the lowest level to which it can cut down or erode its channel.

Flash floods may be especially likely where runoff water is confined to a narrow valley.

A drainage basin

The height of the surface of the water is at any given point is indicated by the stage of the stream.

An increase in sedimentation along a stream can be caused by

Constructing levees may increase the amount of property at risk from future flooding by encouraging floodplain development.

Because upstream floods affect localized areas,they are more likely to be brief than are downstream floods.

A fan-shaped pile of sediment deposited at a stream's mouth is a

A diversion channel is used to shorten a stream and increase its gradient.

A flood stage is reached when the stream stage supersedes the

Plants can reduce the risk of flooding by consuming water,keeping soil loose and permeable and slowing surface runoff.

A dam breaks and stream stage is being monitored just below the dam and several kilometers downstream.Which of the following is true?

A stream generates its own floodplain by

Most human activities tend to reduce flood hazards,so the frequency of floods of a given size has been decreasing for nearly all streams.

Planet and Population: An Overview

Rocks and Minerals-A First Look

Plate Tectonics

Earthquakes

Volcanoes

Coastal Zones and Processes

Mass Movements

Ice and Glaciers,wind and Deserts

Climate-Past, present, and Future

Ground Water and Water Resources

Weathering, erosion, and Soil Resources

Mineral and Rock Resources

Energy Resources-Fossil Fuels

Energy Resources-Alternative Sources

Waste Disposal

Water Pollution

Air Pollution

Environmental Law and Policy

Land-Use Planning and Engineering Geology

Filters