5/25/2017

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Jeff Whanger, PE, SIT, CFM

GIS for Floodplain Managers

Agenda

Introduce available tools

Awareness, not “training”

Topics:

FEMA Map Service Center Data

ArcGIS Online & FEMA GeoPlatform (Web Based GIS)

Google Earth

ArcGIS Applications

MSC.FEMA.GOV New Look, easier access

5/25/2017

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MSC.FEMA.GOV View and download full FIRM panels, FIRMettes, NFHL GIS data

Full Firm PanelsFull FIS Reports

National Flood Hazard Data Layer

ArcGIS Online:

FEMA.MAPS.ARCGIS.COM/HOME FEMA GeoPlatform – Interactive GIS. Web Based.

Map of National Flood Hazard Layer (NFHL)

Start here. Search for an address or a place, like The Alamo

FEMA GeoPlatform – Interactive GIS. Web Based.

Found It!!

Turn NFHL Data On/Off Here

See Layer Symbology Here

Change Basemap Here

Click here to add your own data. “Add Data”

Appears Click the drop down to change symbology & mapping characteristics

ArcGIS Online:

FEMA.MAPS.ARCGIS.COM/HOME

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ArcGIS Online: Create your own

Create

Host

Share

Delivery

Many WMS available, such as FEMA NFHL

Hazards.fema.gov To download NFHL for Google Earth (KMZ file)

FEMA DFIRM & NFHL GIS Data DFIRM

Map Mod Product

•NFHL

–Risk MAP Product

Much of the same technical

data…Flood Zones, BFEs, XS, etc…

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FEMA DFIRM & NFHL GIS Data

Same data as GeoPlatform and Google Earth but in ArcGIS format

GIS Format provides A LOT of functionality

Differences in areas with recent LOMRs

GIS Functionality

Attributes Custom Symbology

GIS Functionality

Attributes Data Mining. Which FIRM Panel do I need?

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GIS Functionality Attributes & Spatial Relationships

Geoprocessing. Use a specific subset of data combined with other spatial or data relationships.

GIS Functionality Attributes

Ability to perform spreadsheet style calculations

GIS Functionality Attributes

Hyperlinks to field photos. Requires use of GPS camera and geotagged digital photos.

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GIS Functionality ArcGIS format and Google Earth KMZ interchangeability

When converting to KMZ, make sure your layer is in GCS (Surface LAT –LONG) Coordinate System…NOT State Plane!!

Google Earth to ArcGIS

ArcGIS to Google Earth

Search “KMZ”

ArcGISTools

ArcHydro

GeoHMS

GeoRAS

Questions?