CFM Exam Study Guide Questions and Answers 100% Pass
What are the three most common types of flooding? ✔✔Riverine, Coastal, and Shallow Flooding
Which type of flooding has accounted for the most flood-related deaths? ✔✔Flash Flooding
A curve or turn in a river channel? ✔✔Meander
What is the major cause in coastal flooding? ✔✔Storm Surge
What causes a tsunami? ✔✔Underwater earthquakes or volcanoes
List the five types of special flood hazards covered in FEMA 480. ✔✔1. Closed Basin Lakes
- Uncertain flow paths
- Dam breaks
- Ice jams
- Mudflows 1 / 4
List three benefits that a floodplain contributes to your community ✔✔Recreational benefits, scientific and historical benefits, Ecosystem benefits, and they protect communities from flooding.
What two problems result from floodplain development? ✔✔1. Development alters the floodplain and the dynamics of the flooding
- Buildings and infrastructure are damaged by periodic flooding
What is one of the problems with constructing seawalls to protect buildings from flooding or erosion? ✔✔It can accelerate flooding on properties at the end of the wall
What are the 5 main causes of flood damage? ✔✔1. Hydrodynamic forces
- Hydrostatic forces
- Soaking
- Debris impact
- Sediment and contaminants
Standing water as little as _____ feet deep can collapse the walls of a frame house. ✔✔3 2 / 4
What are some of the safety and health hazards that accompany floods? ✔✔Disruption of public utilities, Electrocution, contamination of water supplies, fire, dirty ponds, mold, contaminated air ducts, mental health problems
Prior to the 1960's what was the primary way to reduce flood losses? ✔✔Structural flood control projects
What is the unified national program for floodplain managements definition of floodplain management? ✔✔A decision-making process that aims to achieve the wise use of the nations floodplains.
What are the two primary goals of floodplain management? ✔✔1. To reduce the loss of life, disruption, and damage caused by floods
- To preserve and restore the natural resources and functions of floodplains
What areas are conducive to flash flooding? ✔✔1. Hilly areas with steep slopes and narrow valleys
- Urban areas with large amounts of impervious surfaces and storm sewers 3 / 4
- Areas downstream of dams or subject to ice jams
Is erosion only a threat in coastal areas? ✔✔No. Riverine erosion can move stream channels and undercut structures.
What is ponding? ✔✔Where storm water runoff collects in depressions and cannot drain out.
What does filling in a floodplain do? ✔✔Filling reduces the floodplains ability to store excess water, sending more water downstream and causing floods to rise to higher levels.
Does moving sand and sand dunes affect flooding? ✔✔Yes, it may remove a natural barrier that protects inland properties
Hydrodynamic forces are caused by _____ water and hydrostatic forces are caused by ____ water. ✔✔Moving, Standing
List three materials or house hold items that are particularly susceptible to flood damage by soaking. ✔✔Wood, gypsum board, furniture and upholstery, carpeting, mattresses, books, electrical appliances, gas engines
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