Miami-Dade County Public Works Manual governs grading and drainage for development. Positive drainage away from structures is required. No adverse stormwater impact on neighboring properties. Base flood elevation plus freeboard applies in flood zones.
Miami-Dade County Public Works Manual and Chapter 11C govern grading and drainage for all development. Grading must provide positive drainage away from structures and must not divert stormwater onto neighboring properties. In flood zones, finished floor elevations must meet base flood elevation plus freeboard requirements. Fill placement in flood hazard areas is regulated to prevent displacement of floodwaters. Drainage plans are required for building permits in many cases. The county maintains a canal system for regional drainage in coordination with SFWMD. Swale maintenance along public rights-of-way is the property owner's responsibility.
Grading that diverts water onto neighbors is a code violation. Fill placement without authorization in flood zones blocks permits. Non-compliant drainage may require remediation.
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