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Livingston Parish committee reviews flood and drainage code changes aimed at FEMA CRS savings
Summary
Committee heard presentations on proposed amendments to chapter 115 (floods) and chapter 125 (subdivision regulations) to adopt a drainage criteria manual, add a 5‑year storm calculation, raise finished‑floor freeboard from 1 to 2 feet, require compensatory storage/no‑net‑fill and seek CRS credits that could lower residents' flood insurance premiums.
Livingston Parish ordinance committee heard detailed presentations about proposed changes to subdivision and floodplain rules intended to reduce flood risk and earn points in FEMA’s Community Rating System, which consultants say could lower residents’ flood‑insurance premiums.
Consultants from HALF and JPF Planning explained that the package would pull technical engineering specifications out of ordinance text and place them into a separate Livingston Parish drainage criteria manual, update rainfall data and require new engineering checks — including a 5‑year storm calculation — so that smaller, more frequent flood events and erosion risk are evaluated. Jack Young of HALF said the manual is “the how” while the ordinance remains “the what,” making technical updates easier for engineers to reference and for the parish to update later.
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