FEMA 480 Unit 3 || 100% Valid Solutions.
As directed by the National Flood Insurance Act of 1968, FEMA conducts flood studies in order
to determine___________ and _____________ correct answers Floodprone areas and flood risk
zones
The base flood is a flood that has a ____________ of occurring in any year correct answers 1
percent chance
The base flood is also called the _________-year flood correct answers 100-year
Answer the following questions (T or F)
1. A 100 year flood will occur only once every 100 years?
2. A 100 year flood could occur Two times in one year?
3. The 100 year flood might not occur in a 200 year period?
4. The base flood could occur two consecutive years in a row? correct answers 1. False
2. True
3. True
4. True
On NFIP maps, the 100-year floodplain is called the___________ _________ _______
__________ correct answers Special Flood Hazard Area
BFE is the acronym for ______ ________ _______ correct answers Base Flood Elevation
What are the components of a Flood Insurance Study correct answers The FIS - Flood Insurance
Study report
The FIRM - Flood Insurance Rate Map
The Flood Boundary and Floodway Map, which is included in studies prepared before 1986
(Since 1986, floodways are shown on the FIRM)
For purposes of a riverine flood study, ____________ is the study of the distribution and
circulation of water in the environment, and ____________ is the study of fluids in motion an
dhow water will flow through the channel. correct answers Hydrology, and hydraulics
The rate at which runoff flows downstream is called correct answers discharge
What probable effect does increase in urbanization within a community or upstream of it have on
the stream discharges within that community? correct answers Stream discharges usually will
increase as a consequence to the increase in urbanization within a community or upstream of it
What consequence on flood water level of a stream would usually occur when a bridge is
constructed over a stream? correct answers A hydraulic analysis is always required to determine
the effect of any bridge construction over a stream. however, construction over a stream is
considered an obstruction to the flow and therefore may increase the flood water level upstream
of the construction.
, To locate the true elevations at a site, surveyors have established ______ _________ marks also
known as _________ marks correct answers elevation reference, bench
Cross sections describe the _________ of the floodplain correct answers shape
What is the datum used for your community's flood insurance study, FIRM, and profiles? correct
answers Depends on the community. Check the Legend or Key to your FIRM
Flood profiles are developed by plotting the flood elevations at _________ __________ and
connecting the plotted points correct answers cross sections
To make a floodplain map, the base flood elevations are plotted on a ____________ map or a
____________ map correct answers topographic or contour
The _______________ is defined as the stream channel and that portion of the adjacent
floodplain that must remain open to permit passage of the base flood correct answers Floodway
A floodway analysis conducted to the minimum NFIP standard allows the fringe to be obstructed
until the base flood level is increased by how much? correct answers one foot
What causes storm surge? correct answers Storms that bring air pressure changes and strong
winds that "pile"water up against the shore
What is wave runup correct answers When waves hit the shore, water moves with such force that
it keeps traveling inland higher than the stillwater flood level
Instead of cross sections, coastal flood engineers survey correct answers transects
The BFEs for coastal studies are the _______ _______ plus the ________ ________ correct
answers Stillwater elevations, wave runup
The most hazardous part of the coastal floodplain is the __________ ________ area, which is
shown on the map as a ______ Zone. correct answers Coastal High Hazard, V
What differentiates shallow flooding from riverine flooding correct answers Shallow flooding is
distinguishable from riverine or coastal flooding because it occurs in areas where there is no
channel or identifiable flow path
Flood studies that do not identify BFEs are called? correct answers approximate studies
Prior to 1986, the maps published with an FIS are the _____ and the ______. Since 1986, the
map published with an FIS is the ________ correct answers Old format - FIRM, FBFM or
Floodway Map
New Format - FIRM
As directed by the National Flood Insurance Act of 1968, FEMA conducts flood studies in order
to determine___________ and _____________ correct answers Floodprone areas and flood risk
zones
The base flood is a flood that has a ____________ of occurring in any year correct answers 1
percent chance
The base flood is also called the _________-year flood correct answers 100-year
Answer the following questions (T or F)
1. A 100 year flood will occur only once every 100 years?
2. A 100 year flood could occur Two times in one year?
3. The 100 year flood might not occur in a 200 year period?
4. The base flood could occur two consecutive years in a row? correct answers 1. False
2. True
3. True
4. True
On NFIP maps, the 100-year floodplain is called the___________ _________ _______
__________ correct answers Special Flood Hazard Area
BFE is the acronym for ______ ________ _______ correct answers Base Flood Elevation
What are the components of a Flood Insurance Study correct answers The FIS - Flood Insurance
Study report
The FIRM - Flood Insurance Rate Map
The Flood Boundary and Floodway Map, which is included in studies prepared before 1986
(Since 1986, floodways are shown on the FIRM)
For purposes of a riverine flood study, ____________ is the study of the distribution and
circulation of water in the environment, and ____________ is the study of fluids in motion an
dhow water will flow through the channel. correct answers Hydrology, and hydraulics
The rate at which runoff flows downstream is called correct answers discharge
What probable effect does increase in urbanization within a community or upstream of it have on
the stream discharges within that community? correct answers Stream discharges usually will
increase as a consequence to the increase in urbanization within a community or upstream of it
What consequence on flood water level of a stream would usually occur when a bridge is
constructed over a stream? correct answers A hydraulic analysis is always required to determine
the effect of any bridge construction over a stream. however, construction over a stream is
considered an obstruction to the flow and therefore may increase the flood water level upstream
of the construction.
, To locate the true elevations at a site, surveyors have established ______ _________ marks also
known as _________ marks correct answers elevation reference, bench
Cross sections describe the _________ of the floodplain correct answers shape
What is the datum used for your community's flood insurance study, FIRM, and profiles? correct
answers Depends on the community. Check the Legend or Key to your FIRM
Flood profiles are developed by plotting the flood elevations at _________ __________ and
connecting the plotted points correct answers cross sections
To make a floodplain map, the base flood elevations are plotted on a ____________ map or a
____________ map correct answers topographic or contour
The _______________ is defined as the stream channel and that portion of the adjacent
floodplain that must remain open to permit passage of the base flood correct answers Floodway
A floodway analysis conducted to the minimum NFIP standard allows the fringe to be obstructed
until the base flood level is increased by how much? correct answers one foot
What causes storm surge? correct answers Storms that bring air pressure changes and strong
winds that "pile"water up against the shore
What is wave runup correct answers When waves hit the shore, water moves with such force that
it keeps traveling inland higher than the stillwater flood level
Instead of cross sections, coastal flood engineers survey correct answers transects
The BFEs for coastal studies are the _______ _______ plus the ________ ________ correct
answers Stillwater elevations, wave runup
The most hazardous part of the coastal floodplain is the __________ ________ area, which is
shown on the map as a ______ Zone. correct answers Coastal High Hazard, V
What differentiates shallow flooding from riverine flooding correct answers Shallow flooding is
distinguishable from riverine or coastal flooding because it occurs in areas where there is no
channel or identifiable flow path
Flood studies that do not identify BFEs are called? correct answers approximate studies
Prior to 1986, the maps published with an FIS are the _____ and the ______. Since 1986, the
map published with an FIS is the ________ correct answers Old format - FIRM, FBFM or
Floodway Map
New Format - FIRM
