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Planning board forwards stormwater ordinance updates recommending NOAA Atlas 14 rainfall data; public expert submits alternate closed-basin suggestion
Summary
On Jan. 7, 2025 the Escambia County Planning Board voted to forward proposed code changes on stormwater quantity, pond slopes, fencing and maintenance access to the Board of County Commissioners, accompanied by testimony urging a stricter closed-basin standard (7-day / 10-day durations) and higher freeboard.
The Escambia County Planning Board voted on Jan. 7, 2025, to forward proposed amendments to the county’s stormwater design standards (chapter 1, article 1, sections 1‑1.2 and 1‑1.4a) to the Board of County Commissioners, while accepting supplemental public testimony that urged additional closed-basin protections.
Staff and consultant presenters recommended the county adopt NOAA Atlas 14 rainfall values (the current national precipitation dataset) instead of the older FDOT IDF curves (archived in 2024). HDR Engineering consultants Alan Vincent and Philip Walker described a county-level review showing that under Atlas 14 the 100‑year 24‑hour rainfall depth at a sample location increased from about 13.44 inches (historical FDOT IDF) to about 16.2 inches (Atlas 14), and that resulting pond-size changes would typically increase…
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