CFS Floodplain Mapping & Elevation Determination

Question 1

What is the purpose of a Flood Insurance Rate Map (FIRM)?

Accepted Answer

To identify flood hazard zones and elevations

Answer

A Flood Insurance Rate Map (FIRM) is a crucial tool developed by FEMA that graphically depicts the flood hazard areas within a community. These maps identify different flood zones, including Special Flood Hazard Areas (SFHAs), and indicate Base Flood Elevations (BFEs), which are essential for floodplain management, building regulations, and determining flood insurance requirements.

Question 2

What tool is commonly used to determine ground elevation?

Accepted Answer

Surveying equipment

Answer

Surveying equipment, such as total stations, GPS receivers, and levels, is specifically designed and used by certified professionals to accurately measure and determine ground elevations. This precision is critical for floodplain management, construction, and creating elevation certificates, ensuring compliance with regulations and proper flood risk assessment.

Question 3

What is base flood elevation (BFE)?

Accepted Answer

Predicted flood elevation during a 100-year flood

Answer

Base Flood Elevation (BFE) is a critical regulatory term representing the water surface elevation resulting from a flood that has a 1% chance of being equaled or exceeded in any given year (the "100-year flood"). It serves as a benchmark for local floodplain management regulations, dictating minimum elevation requirements for new construction and substantial improvements in flood hazard areas.

Question 4

What does a Letter of Map Amendment (LOMA) do?

Accepted Answer

Amends a flood map using new elevation data

Answer

A Letter of Map Amendment (LOMA) is an official amendment issued by FEMA that removes a property or structure from a Special Flood Hazard Area (SFHA) on a Flood Insurance Rate Map (FIRM). This is typically granted when new, accurate elevation data demonstrates that the lowest adjacent grade or the lowest floor of a structure is at or above the Base Flood Elevation (BFE). A LOMA can often eliminate the mandatory flood insurance requirement.

Question 5

Which agency publishes flood hazard maps?

Accepted Answer

FEMA

Answer

The Federal Emergency Management Agency (FEMA) is the primary federal agency responsible for publishing and maintaining Flood Insurance Rate Maps (FIRMs) and other flood hazard maps. These maps are integral to the National Flood Insurance Program (NFIP), providing critical information for communities, property owners, and insurance providers regarding flood risk and regulations.

(CFS) Certified Floodplain Surveyor Practice Test

(CFS) Certified Floodplain Surveyor Practice Test

CFS Floodplain Mapping & Elevation Determination