These symbols identify coastal areas in the Coastal Barrier Resources System (CBRS) and Otherwise Protected Areas (OPAs).

CBRS zones are designated by the US Fish and Wildlife Service. No new flood insurance coverage may be provided after specified dates for new or substantially improved structures on any Coastal Flood Hazard Area in the CBRS.

OPAs are a category of coastal barriers within the CBRS. OPAs are undeveloped coastal areas established under Federal, State, or local law, or held by a qualified organization, primarily for wildlife refuge, sanctuary, recreational, for natural resource conservation purposes. Flood insurance is restricted in OPAs, though OPAs may receive other forms of Federal assistance. OPAs are identified on FEMA FIRMs.

Note: New FIRM panels will no longer include designated CBRS zones. However the National Flood Hazard Layer (NFHL) Viewer displays this information.