Daytona Beach, FL Environmental Rules: Stormwater Management (2026)

2 of the Land Development Code requires a stormwater management plan before clearing, draining, compacting, filling, grading, excavating, subdividing, replatting, converting agricultural land, changing land use, or constructing or altering a structure if the activity could disrupt existing runoff patterns; bona fide agriculture, mosquito-control canal maintenance and existing pavement or building upkeep are exempted. 3 lets single-family, duplex and minor commercial projects satisfy that requirement simply by filing a plan with their Building Permit or Site Plan application, provided a minor commercial project's added impervious area stays under 1,000 square feet and does not change site grades or drainage patterns; a Certificate of Occupancy is denied if the built project does not match the certified plan.

4 gives a one-time simplified review for any addition under 5,000 square feet of impervious area. 5 requires retention equal to one-half inch of depth over the site and a positive drainage system that will not harm downstream owners. 6 requires retaining the first inch of rainfall on-site (or detaining and releasing it over 24 to 72 hours where soils will not percolate it), and requires post-development peak discharge for the 25-year and 100-year 24-hour storms to stay within 110 percent of the pre-development rate, with post-development runoff volume for a 25-year, 24-hour storm capped at 110 percent of the pre-development volume.

L requires any storm drainage system to follow these stormwater regulations and directs that the most stringent rule applies where Volusia County or the St. Johns River Water Management District also hold permitting authority over the same site.