Orlando, FL Environmental Rules: Stormwater Management (2026)

Part 2H of Chapter 63, Stormwater Management, is administered under both the Land Development Code and the Orlando Urban Stormwater Management Manual (OUSWMM), which the City notes overlaps some of the same regulations. 270 sets the core performance standard: development must provide pollution abatement as required by whichever water management district covers the site, and the incremental stormwater volume and rate the development adds, measured against a 25-year frequency, 24-hour duration design storm, must be captured by an on-site detention facility. That facility can't release water faster than the site's peak discharge rate before development occurred, and the discharge has to reach a 'point of legal and positive discharge,' meaning an approved drainage system rather than simply running onto a neighboring lot.

271 hands off the engineering specifics to OUSWMM Volume 2, which the City Engineer applies to set exact design criteria for pond sizing, outfall structures, and water-quality treatment volumes; a copy of the manual is kept on file with the City Clerk. Because the standard is tied to pre-development conditions rather than a fixed number, every site's detention requirement is calculated individually by a design engineer during the development review process rather than read directly off a table.