Environmental Rules in Dunwoody, GA (2026)
4 verified environmental rules for Dunwoody, Georgia, sourced directly from the municipal code and official government pages.
Verified from official government sources
Stormwater Management
Dunwoody requires a stormwater management plan for new development or redevelopment that adds 5,000 square feet or more of impervious surface, or disturbs one acre or more, before any land disturbance or building permit issues. The plan must follow the Georgia Stormwater Management Manual and control runoff quality, channel erosion and flooding.
Dunwoody Stormwater Management Rules
Some RestrictionsDunwoody Code of Ordinances §§ 16-91(c), (e)(6), 16-98(c)
Sec. 16-91. - Post construction stormwater management for new development and redevelopment.( ... c)Applicability criteria for stormwater management standards. The stormwater management regulations of this division applies to the following activities:(1)New development that involves the creation, addition or replacement of 5,000 square feet or more of new impervious surface area or that involve...
Erosion Control
Dunwoody requires a land-disturbance permit before any land-disturbing activity, with erosion, sedimentation and pollution control plans that meet the Georgia Erosion and Sedimentation Act. The community development director administers review, fees and enforcement under chapter 16, division 3.
Dunwoody Land-Disturbance Permit for Erosion Control
Some RestrictionsDunwoody Code of Ordinances §§ 16-57, 16-60(a)
Any land-disturbing activity permitted under this division must be carried out in accordance with the Georgia Erosion and Sedimentation Act of 1975, O.C.G.A., § 12-7-1 et seq., all applicable city regulations and any conditions attached to the land-disturbance permit issued under section 16-60. ... (a)Required. No person may conduct any land-disturbing activity within the city without first obt...
Flood Zones
Dunwoody's special flood hazard areas follow FEMA's June 15, 1994 flood insurance rate maps citywide. Encroachments into a mapped floodway are prohibited outright, and other floodplain development is barred unless it meets strict no-rise and storage-capacity conditions.
Dunwoody Floodplain Development and Floodway Rules
Significant RestrictionsDunwoody Code of Ordinances § 16-136(g)(1); § 16-139(e)(1)
(g)Basis for establishing special flood hazard areas.(1)The special flood hazard areas identified by the Federal Insurance Administration of the Federal Emergency Management Agency in the flood insurance study dated June 15, 1994, and the accompanying flood insurance rate maps and flood boundary and floodway maps dated June 15, 1994, and all subsequent amendments and/or revisions, are adopted b...
Flood Elevation Requirements
New construction in Dunwoody's future-conditions floodplain must have its lowest floor elevated at least three feet above the base flood elevation, or one foot above the future-conditions flood elevation, whichever is higher. Building equipment must clear the same freeboard.
Dunwoody Base Flood Elevation Freeboard Rule
Some RestrictionsDunwoody Code of Ordinances § 16-140(a)(6), (b)(1)a
(6)All heating and air conditioning equipment and components (including ductwork), all electrical, ventilation, plumbing, and other service facilities must be designed and/or located at least three feet above the base flood elevation or at least one foot above the future-conditions flood elevation, whichever is higher, so as to prevent water from entering or accumulating within the components d...
Looking for DeKalb County county-wide rules?
County ordinances apply to unincorporated areas and may supplement Dunwoody city rules.
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