St. Petersburg, FL Environmental Rules: Stormwater Management (2026)
Key Facts
- Plan approval required
- Before any development permit or order
- Design storm
- 10-year, 1-hour storm, Zone VI St. Petersburg
- Small-project exemption
- Up to 4 dwelling units, not part of larger plan
- Minimum floor elevation
- 103.00 city datum, no variances allowed
- Lien interest on unpaid restoration
- 12% for 2 years, then 18%
Summary
Every development and redevelopment project in St. Petersburg must prepare a drainage and surface water management plan and get it approved by the Planning & Development Services (POD) department before any development permit issues, under the Drainage and Surface Water Management Ordinance, Code § 16.40.030.4. The rules pull in state SWFWMD design standards and back them with civil penalties for violations.
All development and redevelopment within the City is subject to compliance with this section and shall prepare a drainage and surface water management plan for the development or redevelopment. Such plan must receive approval from the POD prior to the issuance of any development permits or orders. All plans must comply with the requirements of this section and all other applicable sections of the City codes or ordinances.
Official source re-checked September 7, 2026: no newer edition of the code had been published (publisher’s edition: Code of Ordinances: Supplement 54).
Full Breakdown
St. Petersburg's 'Drainage and Surface Water Management Ordinance of the City of St. 030, sets standards for stormwater capacity, location, and design that account for the city's compact urban form, and it requires easements for maintaining stormwater improvements. 4, all development and redevelopment citywide must prepare a drainage and surface water management plan and get POD approval before any development permit or order issues. 5 requires a copy of a Southwest Florida Water Management District (SWFWMD) permit or exemption letter, plans signed and sealed by a registered professional engineer, and a post-construction certification from the owner's engineer of record before a certificate of occupancy can issue.
chapters 40D-4 and 40D-40 by reference (substituting the City for the District) and layers on local water-quality and water-quantity rules: development cannot increase the rate of stormwater discharge above the predeveloped rate, with runoff calculated using the rational formula Q=CIA against the state's ten-year, one-hour design storm for Zone VI, St. Petersburg. Residential developments of up to four dwelling units that aren't part of a larger development plan are exempt from the water-quality and quantity requirements. 00 city datum, with no variances allowed from that elevation floor.
Violations & Fines
Commencing an activity covered by this section without an approved drainage plan, deviating from an approved plan, or failing to maintain drainage facilities is a violation under § 16.40.030.9.2. The City can order work halted immediately by written notice, require the violator to restore altered land within 30 days or perform the restoration itself and place a lien on the property, and, after notice, a right to appeal to the City Clerk within ten days, and an unremedied five-day window following any hearing, impose the restoration cost as a special assessment lien bearing 12% annual interest for two years, rising to 18% thereafter.
Frequently Asked Questions
Do I need a stormwater plan approved before I can pull a building permit in St. Petersburg?
Is my small residential project exempt from stormwater rules?
What happens if I don't maintain my property's drainage facilities?
Sources & Official References
Other rules in St. Petersburg
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Stormwater Management in Nearby Cities
How other cities in Pinellas County handle stormwater management.