FEMA flood zone rules in Norristown, PA — also called floodplain regulations or special flood hazard area (SFHA) rules — determine flood insurance requirements and elevation standards for new construction.
Norristown participates in NFIP and administers floodplain regulations under Chapter 120 (Building Permits and Floodplain Management). The Schuylkill River borders the borough and creates FEMA-mapped SFHAs. Development in SFHAs requires a floodplain development permit from Norristown Code Enforcement.
Norristown participates in the National Flood Insurance Program and enforces floodplain management regulations. Properties in FEMA-designated Special Flood Hazard Areas (100-year floodplain) must meet minimum construction standards. New buildings must be elevated above base flood elevation. Substantial improvements to existing structures trigger elevation requirements. Flood insurance required for federally-backed mortgages in SFHA zones. Fill and grading in floodways prohibited. Norristown may maintain higher standards than FEMA minimums. Flood zone maps available through FEMA Map Service Center and local planning department.
Construction below flood elevation: retroactive compliance required, fines $500 to $5,000. Floodway encroachment: removal order. Failure to maintain flood insurance: lender force-placement at higher cost.
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