---
title: Duluth UDC § 1016 — 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/1016"
licence: "CC0-1.0"
---

# Duluth UDC § 1016

Stormwater System Design Criteria

**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:** 10 — Erosion Control and Stormwater Management
- **Pages in source:** 280
- **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

1016.01. General Design Criteria
1. Stormwater conveyance facilities, which may include but are not limited to culverts, storm drainage pipes,
catch basins, drop inlets, junction boxes, headwalls, gutters, swales, channels, and ditches, shall be
provided for the protection of public rights-of-way and private properties adjoining projects’ sites and/or
public rights-of-way. Stormwater conveyance facilities which are designed to carry run-off from more
than one parcel, existing or proposed, shall meet the requirements of these regulations.
2. All stormwater conveyance facility design calculations shall be certified by a registered professional
engineer and submitted to the City as part of the Stormwater Management Report outlined in Section
1021 of this Code Division.
3. Methods to calculate stormwater flows shall be in accordance with the Georgia Stormwater Management
Manual.
4. Runoff curve numbers used for the SCS Method shall be consistent with those shown in the Georgia
Stormwater Management Manual.