Technical guidance documents on various NFIP regulations (e.g. determining base flood elevations, floodway regulations, coastal construction, retrofitting, etc.).
General Information
Coastal Construction
Regulatory Floodway
Retrofitting and Floodproofing Structures
Substantial Improvements and Substantial Damage
Technical Bulletins
The National Flood Insurance Program (NFIP) Technical Bulletins provide guidance for complying with the NFIP’s building performance requirements contained in Title 44 of the U.S. Code of Federal Regulations at Section 60.3 Floodplain Management Criteria for Flood-prone Areas. The bulletins help state and local officials interpret the NFIP regulations and are also useful resources for homeowners, insurance agents, building professionals, and designers.
- TB-0 User's Guide to NFIP Technical Bulletins
- TB-1 Openings in Foundation Walls and Walls of Enclosures - (Revised March 2020)
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 January 2025)
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 - (Revised January 2021)
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 August 2019)
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 March 2020)
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 - (Revised January 2021)
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 - (Revised August 2019)
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
Floodplain Management Fact Sheet Series
The following fact sheets were originally developed by the Southern Tier Central Regional Planning & Development Board in New York State. These fact sheets have been adapted slightly to apply to communities in New Hampshire.