Flood Zone Information




ATTENTION SURVEYORS AND ENGINEERS:  FEMA NFIP has released a 2019 Edition of the Elevation Certificate. You may find the new edition​ at the link above or in the floodplain documents.

ATTENTION CHENA SLOUGH RESIDENTS AND REALTORS:  The new flood maps became effective on September 18, 2020. These maps remove 479 structures from the high-risk flood zone, change flood zones, and designate base flood elevations. Please contact our office for your updated information.  

Title 15​ is the FNSB flood plain management ordinance. New construction or other development in the special flood hazard areas of the borough requires a Floodplain Permit​. One of the principal concerns is that new construction is elevated to the proper height in order to minimize flood loss.​  

Floods and flooding are the most common and costly natural disasters in the United States. Floods present a natural hazard that affects some borough residents year round and can jeopardize public health, safety and welfare.

The borough joined the NFIP in 1969 and remains committed to increasing the overall awareness of flood hazards in the FNSB and to improving permitting compliance for new construction occurring in the floodplain.

It is important for the borough to continue monitoring new development in the floodplain by ensuring construction standards are met. Without such monitoring and regulatory oversight, the NFIP policies noted above would not be possible. In addition, mortgage financing would be difficult, if not impossible, for any properties located in a flood hazard area because of the lender’s requirement for flood insurance.