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Pools and spas located in flood hazard areas indicated within the International Building Code or the International Residential Code shall comply with Section 304.2.1 or 304.2.2.
Exception: Pools and spas located in riverine flood hazard areas that are outside of designated floodways and pools and spas located in flood hazard areas where the source of flooding is tides, storm surges or coastal storms.
[BS] 304.2.1 Pools and Spas Located in Designated Floodways
Where pools and spas are located in designated floodways, documentation shall be submitted to the code official that demonstrates that the construction of the pools and spas will not increase the design flood elevation at any point within the jurisdiction.
[BS] 304.2.2 Pools and Spas Located Where Floodways Have Not Been Designated
Where pools and spas are located where design flood elevations are specified but floodways have not been designated, the applicant shall provide a floodway analysis that demonstrates that the proposed pool or spa and any associated grading and filling, will not increase the design flood elevation more than 1 foot (305 mm) at any point within the jurisdiction.

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