---
title: Duluth UDC § 835.02 — Duluth
jurisdiction: duluth
governing_jurisdiction: Duluth
source_url: "https://www.duluthga.net/UDC_ADOPTED_9.8.2025_Amended_7-13-26.pdf"
effective_date: "2026-07-13"
as_of: "2026-08-13"
canonical: "https://www.gwindex.net/code/duluth/835.02"
licence: "CC0-1.0"
---

# Duluth UDC § 835.02

Floodplain Management Plan Requirements

**Governing jurisdiction: Duluth.** A "Duluth, GA" mailing address is usually NOT in the City of Duluth. Unincorporated Gwinnett is 67.3% of the county's land area and is governed by a different code, a different board and a different permit portal. Resolve the governing jurisdiction before answering any zoning question.


- **Article:** 8 — Environmental Protection
- **Pages in source:** 234–235
- **Adopted:** 2025-09-08
- **Amended through:** 2026-07-13
- **Source:** https://www.duluthga.net/UDC_ADOPTED_9.8.2025_Amended_7-13-26.pdf

## Text

1. An application for a development project with any area of special flood hazard located on the site will be
required to include a floodplain management / flood damage prevention plan. This plan shall include the
following items:

a. Site plan drawn to scale, which includes but is not limited to:

i. Existing and proposed elevations of the area in question and the nature, location and

dimensions of existing and/or proposed structures, earthen fill placement, amount and
location of excavation material, and storage of materials or equipment;
ii. For all proposed structures, spot ground elevations at building corners and twenty-foot

or smaller intervals along the foundation footprint, or 1-foot contour elevations
throughout the building site;
iii. Proposed locations of water supply, sanitary sewer, and utilities;
iv. Proposed locations of drainage and stormwater management facilities;

v. Proposed grading plan;
vi. Base flood elevations and future-conditions flood elevations;
vii. Boundaries of the base flood floodplain and future-conditions floodplain;
viii. If applicable, the location of the floodway; and

ix. Certification of the above by a registered professional engineer or surveyor.
b. Building and foundation design details, including but not limited to:

i. Elevation in relation to mean sea level (or highest adjacent grade) of the lowest floor,

including basement, of all proposed structures;
ii. Elevation in relation to mean sea level to which any nonresidential structure will be

floodproofed;
iii. Certification that any proposed non-residential floodproofed structure meets the

criteria in 837.02(b);
iv. For enclosures below the base flood elevation, location and total net area of foundation

openings as required in Section 837.01(e).
v. Design plans certified by a registered professional engineer or architect for all proposed

structure(s).
c.
Description of the extent to which any watercourse will be altered or relocated as a result of the
proposed development;
d. Hard copies and digital files of computer models, if any, copies of work maps, comparison of pre-

and post-development conditions base flood elevations, future-conditions flood elevations, flood
protection elevations, special flood hazard areas and regulatory floodway widths, flood profiles
and all other computations and other information similar to that presented in the FIS;

233 | P a g e

Article Eight. Environmental Protection

e. Copies of all applicable state and federal permits necessary for proposed development including

but not limited to permits required by Section 404 of the Federal Water Pollution Control Act,
Amendments of 1972, 33 U.S.C. 1334; and.
f.
All appropriate certifications required under this Code Division.
2. The approved floodplain management/flood damage prevention plan shall contain certification by the
applicant that all development activities will be done according to the plan or previously approved
revisions. Any and all development permits and/or use and occupancy certificates or permits may be
revoked at any time if the construction and development activities are not in strict accordance with
approved plans.