Floodplain Management (Exam 4) questions with
accurate answers
100 year flood Ans✓✓✓ flood that has a 1% chance of being equaled
or exceeded in any given year
11 Ans✓✓✓ How many named systems strike the Atlantic basin a year
(on average)?
500 year flood Ans✓✓✓ flood that has a 0.2% chance of being equaled
or exceeded in any given year
annual series Ans✓✓✓ sample data type with one value per year, such
as max peak flow each year
backwater swamps Ans✓✓✓ wetlands formed when waters recede and
water is retained behind natural levee
baseflow Ans✓✓✓ provided by deep and shallow subsurface flow
basic objective Ans✓✓✓ modify susceptibility to flood damage
modify flooding
modify the impact of flooding
preserve and restore the natural resources of floodplains
, benefits of floodplains Ans✓✓✓ -modulation of floods
- productive soils
- maintenance of water quality
- groundwater recharge
- diverse biotic communities
- cultural, scientific, and recreational value
Channel Ans✓✓✓ path for water and sediment flowing within banks
Chute Ans✓✓✓ relatively straight portion of the river
coastal flooding Ans✓✓✓ flooding minimized using mostly
nonstructural techniques, but some structural
coastal/tidal Ans✓✓✓ what type of flooding occurs due to hurricanes or
other major storms?
Complete duration series Ans✓✓✓ sample data type where all the data
points taken during elapsed time frame
depositional zone Ans✓✓✓ flattest slope and slowest water flowand
widest bank area covered by water
ecotone Ans✓✓✓ blending point b/t ecosystems
accurate answers
100 year flood Ans✓✓✓ flood that has a 1% chance of being equaled
or exceeded in any given year
11 Ans✓✓✓ How many named systems strike the Atlantic basin a year
(on average)?
500 year flood Ans✓✓✓ flood that has a 0.2% chance of being equaled
or exceeded in any given year
annual series Ans✓✓✓ sample data type with one value per year, such
as max peak flow each year
backwater swamps Ans✓✓✓ wetlands formed when waters recede and
water is retained behind natural levee
baseflow Ans✓✓✓ provided by deep and shallow subsurface flow
basic objective Ans✓✓✓ modify susceptibility to flood damage
modify flooding
modify the impact of flooding
preserve and restore the natural resources of floodplains
, benefits of floodplains Ans✓✓✓ -modulation of floods
- productive soils
- maintenance of water quality
- groundwater recharge
- diverse biotic communities
- cultural, scientific, and recreational value
Channel Ans✓✓✓ path for water and sediment flowing within banks
Chute Ans✓✓✓ relatively straight portion of the river
coastal flooding Ans✓✓✓ flooding minimized using mostly
nonstructural techniques, but some structural
coastal/tidal Ans✓✓✓ what type of flooding occurs due to hurricanes or
other major storms?
Complete duration series Ans✓✓✓ sample data type where all the data
points taken during elapsed time frame
depositional zone Ans✓✓✓ flattest slope and slowest water flowand
widest bank area covered by water
ecotone Ans✓✓✓ blending point b/t ecosystems
