Unit 4 Learning Check NFIP Flashcards
what is the base flood discharge on the rocket river just upstream of welington road
use flood county FIS report
use table 3 - summery of discharges
go to Rockey River, just upstream row.
then go to Peak Discharges - 100 year column
answer - 2610 cfs
what is the 10-year peak discharge for cobb brook
use flood county FIS report
use table 3 - summery of discharges
go to Cobb Brook row
then go to 10-year peak discharge column
560 cfs
how many cross sections were surveyed for cobb brook
3
cross sections A, B, C
what is the width of the floodway for the rocky river at cross section G
table 6
cross section 6 row
width column
560 ft
what is the flood elevation at cross section G of the rocky river that you would use for regulating new construction
table 6
cross section G row
regulatory column
11.6 ft
what is the best source of base flood elevation data for regulatory purposes for a coastal floodplain
FIRM
in which FIRM zone is site F
look at FIRM map
hand-written site F
VE
what is the regulatory base flood elevation at site F
13.4 ft
13 ft on FIRM map + 0.4ft to make sure regulatory elevation will be high enough
how many feet does 1 in on the flood county FIRM panel 38 represent
look at legend
find panel 38
look at scale - 1” - 500ft
500 ft
how many feet does ` in on flood county FIRM panel 25 represent
look at legend
find panel 25
find scale - 1” = 2,000ft
2000 ft
using the flood county FIRM panel 40 and the engineers scale, what is the width of the floodway at cross section F on the rocky river
about 250 ft
what office is the primary repository for your FIS, FIRM, and floodway map
local community office
how do you get more copies of your FIRMS
call or send mail to map service center in Jessup, Maryland
what are the 4 types of map changes
restudy - new flood insurance study
limited map maintenance project (LMMP) - small restudy, limited in size/cost
amendment - remove an area included in SFHA
revision - all other cases
mrs murphy says she has a survey that shows her house is above flood level.
what type of map change?
letter of map amendment (LOMA)
to remove single lot from SFHA based on elevation data
mrs murphy says she has a survye that shows her house is above flood level.
which locations on her property will she need elevation data
lowest grade adjacent to the building
a builder wants to get a bank loan to develop an area. his plans are to fill some low spots and get all the building sites out of the floodplain. his banker will not grant a loan for the project under FIRM changed when project finished.
what type of map change?
conditional letter of map revision based on fill (CLOMR-F)
