Flood Mapping News

Read on for the latest in flood hazard mapping news.  
1. - - Webmaster’s Note: Acrobat 5 Reader
2. - - Map Modernization: Proposed Rule for Future Conditions Hydrology 
Published
3. - - Software: New HEC-RAS Use Policy 
4. - - Map Change Information: Congaree River Appeal Resolution
5. - - Regulations: Questions and Answers Regarding Recent Changes to Part 65 
of the NFIP Regulations
6. - - Map Change Information: Flood Protection Restored for Parts of Five 
Communities in California
1. - - Acrobat 5 Reader
As you know, many of the files on the Flood Hazard Mapping website are also 
available as PDFs.  Portions of these files may not display correctly with 
older versions of Adobe Acrobat Reader. For best results, it is recommended 
that Adobe Acrobat Reader Version 5.0 (the latest version of the reader) be 
used to view these files. If you do not have a copy of this version 
installed on your computer, you may obtain additional information about how 
to obtain and use the free Adobe Acrobat Reader at 
http://www.fema.gov/mit/tsd/DL_acr.htm.
2. - - Proposed Rule for Future Conditions Hydrology Published
http://www.fema.gov/mit/tsd/FRM_fchy.htm
http://www.fema.gov/mit/tsd/FT_hydro.htm
The purpose of the proposed rule is to revise the National Flood Insurance 
Program (NFIP) regulations to include definitions for future conditions 
hydrology and for the floodplains that may be shown on Flood Insurance Rate 
Maps (FIRMs), for informational purposes at the request of a community, to 
reflect future conditions hydrology; and to establish the zone symbol to be 
used to identify future conditions flood hazard areas on the FIRMs.  Follow 
the links above to learn more about the proposed rule, or to view the 
report “Modernizing Fema's Flood Hazard Mapping Program: Recommendations 
For Using Future Conditions Hydrology For The National Flood Insurance 
Program”.
3. - - New HEC-RAS Use Policy
http://www.fema.gov/mit/tsd/DL_hrpy.htm 
The Hydrologic Engineering Center of the U.S. Army Corps of Engineers has 
released the River Analysis System, HEC-RAS, to replace the HEC-2 hydraulic 
model. It is a completely new piece of software – in fact, none of the 
hydraulic routines from HEC-2 were used in the HEC-RAS software. A 
memorandum addressing the policy for the use of HEC-RAS to replace HEC-2 
models for flood hazard mapping in the NFIP is available on the FHM web 
site.
3. - - Congaree River Appeal Resolution – View the Materials Presented at 
Meeting in Columbia, South Carolina
http://www.fema.gov/mit/tsd/ST_cong6.htm 
Read about the presentations made by appellants at an April 27, 2001, 
meeting in Columbia, South Carolina. The purpose of this meeting was to 
allow appellants and community officials to clarify their previous 
submittals.  Additional information and materials about this case are also 
available on the FHM web site.
4. - - Obtain Guidance Regarding the Recent Changes to Part of the NFIP 
Regulations
http://www.fema.gov/mit/tsd/DL_lfqa.htm 
Certain regulations regarding data requirements and procedures for 
obtaining Letters of Map Revision base on Fill (LOMR-F) and Letters of Map 
Revision (LOMRs) have changed (as of May 4, 2001). The rules are outlined 
in 44 Code of Federal Regulations (CFR) chapter I part 65.  Additional 
guidance, including a technical bulletin, is available on the FHM site.
5. - - Flood Protection Restored for Parts of Five Communities in California
http://www.fema.gov/mit/tsd/ST_lafpr.htm 
Learn more about the recently issued LOMR for five communities in 
California.  As a result of the completion of restoration work on a portion 
of the Los Angeles River flood protection system, flood zones have been 
removed from parts of five communities along the Rio Hondo Channel, 
including Downey, Pico Rivera, South Gate, Paramount, and Montebello.



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