Hello All GIS Flood Data Users,

The National Flood Hazard Layer – NFHL- is an excellent resource.  The data is new, the more recently mapped counties use the LiDAR data that has been collected over the past few years to more accurately map the flood zone.  These new counties include Hancock, Waldo, Sagadahoc, Lincoln, Knox, and to a lesser degree Androscoggin and Kennebec (they were being mapped when the LiDAR was being acquired).  Oxford County did not have LiDAR available when it was mapped so it is a direct lift off the paper maps. 

The NFHL layer should be in the MEGIS catalog for State of Maine GIS users.  FEMA updates it as needed, so it will need to be refreshed occasionally.

Note that the Q3 GIS data is of much lesser quality.  Always compare Q3 to the paper maps to insure completeness and accuracy.

If you have any questions about the NFHL or other flood data contact the Maine Floodplain Management Program.

 

Janet

 

Janet Parker, CFM

Maine Floodplain Management Program

Maine Department of Agriculture, Conservation and Forestry

17 Elkins Lane, Williams Building

93 State House Station

Augusta, Maine, 04333-0038

207-287-9981 office phone

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Hi Kelly,

 

Thanks for the shout out but I cannot take responsibility for the Maine Application.

 

That is a product of the Maine Floodplain Management Team and Christian Halstead at the Department of Agriculture, Conservation and Forestry.

 

Joe

 

 

 

Land surveyors and others practicing in Hancock County are likely aware of the new maps and related products that went into effect 20160720. Related spatial products are also available through FEMA Map Service Center portal's Search All Products:, and drilling down to NFHL Data-County provides a link to a good-sized slug of data. Of particular interest, county-wide data:






Another handy source of information from FEMA is its Web Map Service (WMS) interface, great for using Google Earth Pro to check out stuff like where the previously approved and now re-validated LOMAs are located. Or configure the WMS/ FEMA NFHL kmz in your favorite GIS app; e.g., Global Mapper) - more information regarding its layers here.




Maybe, the best for last: Maine's own searchable browser interface; type in a street address and explore this rich interactive resource. Many thanks to Joe Young and the entire MeGIS team - top marks!

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