Environmental Rules in Gulfport, MS (2026)
4 verified environmental rules for Gulfport, Mississippi, sourced directly from the municipal code and official government pages.
Verified from official government sources
Stormwater Management
Gulfport designs its stormwater system to a 50-year storm event under Appendix C of the city code, with peak discharge for the 100-year and 500-year storms calculated and shown as part of every permit application. Post-construction facilities also require a recorded maintenance agreement.
Gulfport Stormwater Management Standards
Some RestrictionsGulfport Code of Ordinances, Appendix C (Erosion, Sediment, and Post-Construction Control) § 7.1
Minimum control requirements. Projects shall be designed for a fifty (50) year frequency storm event. Peak discharge rates for one hundred (100) year and five hundred (500) year frequency storm events shall be calculated and the effect of these storms on the stormwater system shown. This shall be submitted as part of the permit application.
Erosion Control
Gulfport requires soil stabilization within five days of clearing or a construction halt under Appendix C of the city code. A land-disturbance permit is triggered once a project adds 20,000 square feet of impervious area, and even permit-exempt clearing under 10,000 square feet must still follow best management practices.
Gulfport Erosion and Sediment Control
Some RestrictionsGulfport Code of Ordinances, Appendix C (Erosion, Sediment, and Post-Construction Control) § 6.5.1, 6.5.2, 6.5.5
6.5.1 Soil stabilization shall be completed as soon as practical but not later than five (5) days after clearing or inactivity in construction. The city engineer, public works director, or building official may shorten this time frame based on projected weather conditions. 6.5.2 If seeding or another vegetative erosion control method is used, it shall become established within two (2) weeks and...
Flood Zones
Any development inside a Gulfport special flood hazard area needs a $100 floodplain development permit before work starts. The city adopted this framework under Mississippi's Title 17 zoning enabling law to keep residents eligible for the National Flood Insurance Program.
Gulfport Floodplain Development Permit
Significant RestrictionsGulfport Code of Ordinances, Appendix B (Flood Damage Prevention) Art. 3 Sec. C
A development permit shall be required in conformance with the provisions of this ordinance prior to the commencement of any development activities in identified areas of special flood hazard within the community. The fee for such permit shall be $100.00. It shall be a violation of this ordinance to commence development activities in identified areas of special flood hazard within the community...
Flood Elevation Requirements
Gulfport requires new and substantially improved buildings in mapped flood zones to have their lowest floor at least 1 foot above base flood elevation, the freeboard margin the city built into its NFIP-compliant flood ordinance after repeated FEMA map updates following Hurricane Katrina.
Gulfport Base Flood Elevation Rules
Significant RestrictionsGulfport Code of Ordinances, Appendix B (Flood Damage Prevention) Art. 5 Sec. B(1)-(2)
Residential construction. ... New construction and substantial improvement of any residential building (including manufactured home) shall have the lowest floor, including basement, elevated a minimum of one (1) foot above the base flood elevation... ... Non-residential construction. New construction and substantial improvement of any commercial, industrial, or non-residential building (includi...
Looking for Harrison County county-wide rules?
County ordinances apply to unincorporated areas and may supplement Gulfport city rules.
Environmental Rules in Harrison County →