Download - FIS BFE Practice Morgantown
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Flood Map Users Workshop
June 5
th
, 2008
Charleston, WV
WELCOME
We Are Glad You Are Here!
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Paper FIRM review
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Using Paper FIRMs
Find correct FIRM panel using Flood Countyindex
Find property site on correct FIRM
Find location of development at site by scaling(measuring)
Identify nearest flood insurance risk zonedesignation and Floodway
Identify rounded base flood elevation on FIRM
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Flood County panel 38
Approximate Zone A
Zone Division Line
500 year
Floodway
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FLOODWAY SCHEMATIC
SURCHARGE
FLOODWAY
100 YEAR FLOODPLAIN
FLOODWAY
FRINGE
FLOODWAY + FLOODWAY FRINGE = 100 YEAR FLOODPLAIN
SURCHARGE NOT TO EXCEED 1.0 FEET
FLOODWAY
FRINGE
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Review Online FIRM Handout
www.msc.fema.gov. (not necessary to log on in order to use site.)
Product Catalog icon towards the top left of screen.
Under FEMA Issued Flood Maps click on Latest Available Flood Mapsto access Flood Insurance Studies (or floodway maps in thosecommunities where floodway maps are separate from the FIRM) click onFEMA issued Flood Insurance Studies
To access a particular map panel:
Under select a State, District or Territory, enter or scroll to West Virginia.
Under select a County, Parish, etc., enter or scroll to the appropriate
County. Under select a community, enter or scroll to the appropriate community.
*Important (for a county panel you must enter the county under community)
Click Find FEMA issued Flood Map (step 4 under select a community).
http://www.msc.fema.gov/http://www.msc.fema.gov/ -
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Online FIRMs continued
Viewing and Printing a FIRMETTE
When viewing an online FIRM panel you can navigate by using thetools (Zoom in & out and Pan) on the left hand side of the screen.Below the navigation buttons are the tools for making a FIRMette.When you have located the general area you want to print:
Click the Make a FIRMette button. Using the mouse Drag the green shaded box that appears in theupper left hand corner to the area you want to print on yourFIRMette and drop it.
Select the page size (usually 8 1/2 X 11).
Click the Scale or North Arrow boxes as appropriate and make any
adjustments necessary so the box covers only these items(otherwise part of the edge of the map adjacent to these boxes willappear on your FIRMette).
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Online FIRMs continued
Choose the format for your FIRMette (PDF or TIF)
Click the save button on the screen to the immediateleft of your new FIRMette.
Check the save this file to disk box , click ok.
Scroll to the file on your hard drive where you wantyour FIRMette saved (My Documents, desktop, etc.).
In the file name column, enter the title you want yourFIRMette saved as, click ok.
Navigate to the folder with saved FIRMette and openit, click on your FIRMette filename.
Before you print change printer setting to landscapeand turn off scale to fit or anything similar.
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Practice creating A FIRMette
Go to MSC.FEMA.gov
Follow instructor on your laptop
Find Willis Avenue bridge crossing Ann Run inBridgeport (Harrison County)
Site is on Williams Ave approximately 50 feetNorth of intersection with Cherry Street
Raise your hand if you fall behind or have
technical difficulties
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FMIT Practice
Bring up FMIT
Follow Instructor on your laptop
Find correct Map panel
Zoom, use slide bars to pan
Choose print area
Save FIRMette
Raise Your hand when you are ready toprint FIRMette
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FIRMette
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WV Flood Hazard Determination Tool
WWW.MAPWV.GOV/FLOOD
Click the
REDarrow to
launch
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Counties in WHITE have no
flood layer!!
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F.Pan
E. Back one level
of zoom
D. Zoom OUT to State
C. Zoom OUT
B. Zoom IN
A. Turn small state map
overview off & on
K. Zoom Scale
J. Elevation & Zone
(Star)
I. Print
H. Erase tool selection
G. Measuring Tool
(measures in feetor miles)
A B C D E F G H I J K
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Flood Hazard Determination Tool
Practice
Bring up tool (mapwv.gov/flood)
Follow Instructor on your laptop
Search function Find correct area
Use Zoom, pan, elevation tool, measuring
tool Raise Your hand when you are ready to
print
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306 FEET
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306 + 200 = 506 feet
199.97
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Firmette with hand measurements
Scale 1 = 400
1 = 500 Ft.
1
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Firmette with hand measurements
5/8 = 250 Ft.
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FIS profile
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Establish BFE on FIS Profile
Each block = 50 foot
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990
E
980
Cross section E
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990
E
980
Cross section E
3530
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Flood Frequency
Flood Frequency chance of flooding Chance of flooding
(years) in any given year over 30 years
500 0.2 out of 100 6%
100 1 out of 100 26%
50 2 out of 100 46%
10 10 out of 100 96%
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Floodway example
1/4 = 100
Floodway starts 100 foot from
road
Surveyor locates floodway
boundary by measuring from
center of road to edge of
floodway
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Map exercise 1.5
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Map Exercise 2
199 Smith St. Bridgeport 26330Permit for new structure 100 feet south ofSmith Street, 50 feet west of Pennsylvania
Avenue
1. Panel #
2. Flood Zone3. In Floodway?
4. Estimate BFE from Map
5. BFE from Flood Insurance Study
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Map Exercise 3
100 foot West of Intersection of Blue Horizon(19) and Mason Dixon Hwy (7) in Pursglove,
Monongalia County
1. Panel #
2. Flood Zone
3. In Floodway?
4. BFE
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IF IN DOUBT, ITS NOT OUT!
The map is merely a tool. If the area in questionis too close to the boundary to confidentlydetermine location relative to the flood hazardthen request elevation data.
A site plan with elevation data works best. Youwill need at least BFE and the LAG to theproposed foundation.
Floodway on the site? Require the Surveyor toscale the floodway Boundary onto the site plan.
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Floodway Boundary
BFE863 LAG 862.25
Signed:______________ Dated:___9/1/07__ ROAD NAME
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Please Return:
Flood County Map Packet & Flood
Insurance Study
Engineers Scale
(we need them for Surveyor workshop
tomorrow)
THANK YOU!
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GIS layer availability
Uncertified Countywide Digital Flood Themesavailable from WVU GIS Tech Center(Also knows as
DFIRM Lite layers) available for:
Barbour, Monongalia, Randolph, Taylor
ftp://ftp.wvgis.wvu.edu/pub/Clearinghouse/water_resources/DFIRM-lite/