Floodplain Development Standards
Local floodplain management requirements are intended to reduce the risks associated with new development in regulated floodplain areas. All municipalities in the STC region have enacted floodplain development regulations that are consistent with federal standards (thereby enabling participation in the National Flood Insurance Program). These regulations are intended to ensure that new development in flood-prone locations is reasonably safe from flood damage and will not result in physical damage to other property.
Regulated floodplain: The floodplain areas that are subject to floodplain development regulations are those shown on flood hazard maps (called Flood Insurance Rate Maps) as high flood hazard areas with a 1% or greater probability of being flooded in any given year. These regulated floodplains are also referred to as the 100-year floodplain. Approximate maps of the regulated floodplain are available on the Southern Tier Central GIS Map Portal. Or print a FIRMette at the FEMA Map Service Center website.
STC has developed a series of floodplain management fact sheets to assist with implementation of floodplain development requirements:
Municipal governments (cities, towns, and villages) are responsible for issuing floodplain development permits and enforcing floodplain development standards. The following checklists can be used to assist with the process of managing floodplain develoment:
Plan Review Checklist - Flood Hazard Area Application Review - A Zones (NYS Department of State)
Inspection Checklist - Flood Hazard Area Inspections - A Zones (NYS Department of State)
Additional floodplain management forms:
Elevation Certificate (FEMA Form 086-0-33) - Used to document building elevation information for floodplain management and flood insurance purposes. The Elevation Certificate and instructions can be obtained from FEMA's website or from the municipal building department. It is generally completed by a land surveyor. STC has developed a workshop about use of FEMA Elevation Certificates.
Floodproofing Certificate (FEMA Form 086-0-34) - Used to certify dry floodproofing of non-residential structures. Must be completed by a registered professional engineer or architect.
"No-Rise" Certification- Can be used by a licensed professional engineer to certify that a proposed floodway encroachment will not result in any rise in the 100-year flood elevation.
Certification of Flood Resistant Design - Can be used for professional certification that a design is resistant to flood damage. Situations in which this certification may be necessary include: engineered flood vents (that do not meet the specified design criteria), wet floodproofed utilities or equipment, anchoring, septic systems, gas well equipment, or flood-resistant materials not listed in FEMA's Technical Bulletin 2.
Non-Conversion Agreement for Enclosed Area Below the Flood Protection Level - Enclosed areas below the flood protection level can only be used for limited purposes and cannot be altered in a manner that violates the Floodplain Development Permit. This form can be used to document the owner's understanding of these conditions.
Floodplain Variance Findings & Decision - This form provides a format for documenting the findings, determination, and any conditions of approval for a floodplain variance request.
Substantial Improvement/Damage Rule for existing buildings in the regulated floodplain: If the cost of improvements or the cost to repair damages (from any cause) exceeds 50% of the market value of the building (excluding land value), the entire building must be brought up to current floodplain management standards.
|STC Also Recommends:|
The Association of State Floodplain Managers promotes No Adverse Impact floodplain management. This is a "good neighbor" approach based on the premise that it's not right to transfer or worsen a flooding problem. No one has the right to use their property to harm other people. Any adverse impacts should either be avoided or mitigated. Potential impacts to consider include: higher flood stage, increased velocity, erosion and/or sediment, increased cost of public services, water quality impacts, habitat loss, etc. STC has developed a presentation about No Adverse Impact Floodplain Management that challenges communities to consider additional strategies for managing flood risks. Additional resources for implementing No Adverse Impact floodplain management policies are available at the Association of State Floodplain Managers website.