Technical Information and Guidance

General Information

• Floodplain Management Requirements – A Study Guide and Desk Reference for Local Officials
• Floodplain Management Bulletin on Elevation Certificates
• Floodplain Management Bulletin on Historic Structures
• Use of Flood Insurance Study (FIS) Data As Available Data

Coastal Construction

• Coastal Construction Manual
• Corrosion Protection of Metal Connectors in Coastal Areas (TB 8)
• Design and Construction Guidance for Breakaway Walls Below Elevated Coastal Buildings (TB 9)
• Flood Damage-Resistant Materials Requirements (TB 2)
• Free-of-Obstruction Requirements (TB 5)
• Home Builder’s Guide to Coastal Construction Technical Fact Sheet Series
• Local Officials Guide to Coastal Construction
• No Adverse Impact in the Coastal Zone
• Recommended Residential Construction for Coastal Areas

Regulatory Floodway

• FEMA’s NFIP Floodplain Management Requirements – A Study Guide and Desk Reference for Local Officials – Unit 5 - The NFIP Floodplain Management Requirements (pages 5-21 to 5-26)
• Procedures for Compliance with Floodway Regulations

Retrofitting and Floodproofing Structures

• Elevated Residential Structures
• Engineering Principles and Practices of Retrofitting Flood Prone Structures
• Floodproofing for Non-Residential Structures
• Homeowner’s Guide to Retrofitting
• Protecting Manufactured Homes from Floods and Other Hazards
• Protecting Building Utilities from Flood Damage
• Protect Your Property from Flooding Fact Sheets
  • Install Sewer Backflow Valves
  • Anchor Fuel Tanks
  • Raise Electrical System Components
  • Build with Flood Damage Resistant Materials

Substantial Improvements and Substantial Damage

• Substantial Improvement/Substantial Damage Desk Reference
• Substantial Damage Estimator (SDE)
• Answers to Questions about Substantially Damaged Buildings
• FEMA’s NFIP Floodplain Management Requirements – A Study Guide and Desk Reference for Local Officials – Unit 8 Substantial Improvements & Substantial Damage

Presentation slides from the Determining Substantial Damage and Improvement workshop held on March 18, 2009 by FEMA and OEP.

• Presentation slides of Determining Substantial Damage and Improvement (2MB)

Technical Bulletins

• TB-1 Openings in Foundation Walls and Walls of Enclosures REVISED AUGUST 2008
  Provides guidance on the NFIP regulations concerning the requirement for openings in below-Base Flood Elevation foundation walls for buildings located in Zones A, AE, A1-A30, AR,AO, and AH.
• TB-2 Flood Damage-Resistant Materials Requirements REVISED AUGUST 2008
  Provides guidance on the NFIP regulations concerning the required use of flood-damage resistant construction materials for building components located below the Base Flood Elevation in Special Flood Hazard Areas (both A and V zones).
• TB-3 Non-Residential Floodproofing - Requirements and Certification
  Provides guidance on the NFIP regulations concerning watertight construction and the required certification for floodproofed non-residential buildings in Zones A, AE, A1-A30, AR, AO, and AH whose lowest floors are below the Base Flood Elevation.
• TB-4 Elevator Installation REVISED NOVEMBER 2010
  Provides guidance on the NFIP regulations concerning the installation of elevators below the Base Flood Elevation in Special Flood Hazard Areas (both A and V zones).
• TB-5 Free-of-Obstruction Requirements REVISED AUGUST 2008
  Provides guidance on the NFIP regulations concerning obstructions to flood waters below elevated buildings and on building sites in Coastal High Hazard Areas (Zones V, VE, and V1-V30).
• TB-6 Below-Grade Parking Requirements
  Provides guidance on the NFIP regulations concerning the design of below-grade parking garages beneath buildings located in Zones A, AE, A1-A30, AR, AO, and AH.
• TB-7 Wet Floodproofing Requirements
  Provides guidance on the NFIP regulations concerning wet floodproofing of certain types of structures located in Zones A, AE, A1-A30, AR, AO, and AH.
• TB-8 Corrosion Protection for Metal Connectors in Coastal Areas
  Provides guidance on the need for, selection of, and use of corrosion-resistant metal connectors for the construction of buildings in coastal areas.
• TB-9 Design and Construction Guidance for Breakaway Walls Below Elevated Coastal Buildings REVISED AUGUST 2008
  Provides guidance on the NFIP regulations concerning the design and construction of breakaway walls beneath elevated buildings in Coastal High Hazard Areas (Zones V, VE, and VI-V30).
• TB-10 Ensuring that Structures Built on Fill In or Near Special Flood Hazard Areas are Reasonably Safe From Flooding
  This technical bulletin discusses building techniques, including the use of fill, that can be used to ensure structures are reasonably safe from flooding.

Zone A Areas – No Base Flood Elevations Determined

• Summary of Managing Floodplain Development in Zone A Areas
• Managing Floodplain Development in Approximate Zone A Areas – Guide to Obtaining and Developing Base (100-Year) Flood Elevations
• Regulating Approximate Zone A Areas
• Internet Sources for Hydrologic and Flood Information
• FEMA Region 1 Guidance on Meeting the NFIP Minimum Requirements in Zone A Areas
• NGVD to NAVD
• NH StreamStats - an online application providing automated regression-equation solutions for user-selected sites on streams.

Presentation slides from the Estimating and Determining Base Flood Elevations in Zone A Areas workshops held on September 16, 18, 23, and 25, 2008 by OEP and USGS.

• Presentation slides of Overview of NFIP and Zone A Regulations (2MB)
• Presentation slides of Sources of Floodplain Information, and Simple and Detailed Methods (This is a 6Mb file which will take approximately 15 minutes to download with a 56Kb dial-up connection or about a minute and a half with a 640Kb Cable/DSL connection.)

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