Environmental Rules in Rankin County, MS (2026)

3 rules for unincorporated Rankin County, Mississippi.

Verified from official government sources

Note: These county rules apply to unincorporated areas of Rankin County. If you live within an incorporated city, that city's own rules apply: see the city list below.

Stormwater Management

Rankin County's Zoning Ordinance requires a drainage plan showing storm drainage facilities and projected storm water flow rates whenever the county requires site plan review, covering conditional uses and commercial development in the unincorporated county only.

Rankin County Stormwater Site Plan Rule

Some Restrictions

Rankin County Zoning Ordinance, Art. VII, § 709.01(H)

On request by the Zoning Administrator, a drainage plan showing all existing and proposed storm drainage facilities. The drainage plan shall indicate adjacent off-site drainage courses and projected storm water flow rates from off-site and on-site sources. I. On request by the Zoning Administrator, contours at vertical intervals of five (5) feet or less. ...

Full ordinance details →Official source ↗

Flood Zones

Rankin County bans development within the designated Floodway and requires any development in the surrounding Special Flood Hazard Area to sit at least 100 feet back from it.

Rankin County Flood Zone Development Rules

Significant Restrictions

Rankin County Zoning Ordinance, Art. XXXI, § 3102

SECTION 3102 - PROHIBITIONS ON DEVELOPMENT: No development is permitted within the designated Floodway. Any development permitted within the designated Special Flood Hazard Area (SFHA) must have a setback of one hundred (100) feet of the Floodway.

Full ordinance details →Official source ↗

Flood Elevation Requirements

In FEMA Flood Zone A within unincorporated Rankin County, Mississippi, new structures must have a finished floor 24 inches above the base flood elevation, and undeveloped BFE areas need a flood study first.

Rankin County Flood Elevation Rule

Some Restrictions

Rankin County Zoning Ordinance, Art. XXXI, § 3100

Any structures which are approved to be constructed in this designated area will be required to have a finished floor elevation twenty-four (24) inches above the base flood elevation.

Full ordinance details →Official source ↗

All Rankin County ordinances

See every category we cover for Rankin County: parking, noise, fences, fires, animals, pools, and more.

Rankin County Ordinance Hub →