SEMSWA Stormwater Management Manual

Chapter 14 of the SMM, as amended was adopted by the SEMSWA Board of Directors (Resolution) in June 2019 for the purposes of implementing MS4 Permit Requirements.

The Stormwater Management Manual provides requirements for the planning, design, construction, and operation of stormwater facilities within the City of Centennial.

Update/Amendment History: Complete SMM updated January 2017, Chapter 14 (Stormwater Quality) updated July 2019. 20/10 calculator updated October 2020.

Chapter 1 - General Provisions Chapter 2 - Stormwater Management Policy & Principles Chapter 3 - Stormwater Management and Development Chapter 4 - Drainage Report and Construction Drawing Submittal Requirements Chapter 5 - Floodplain Chapter 6 - Hydrology Chapter 7 - Street Drainage Chapter 8 - Inlets Chapter 9 - Storm Sewers Chapter 10 - Conduit Outlet Structures Chapter 11 - Culverts and Bridges Chapter 12 - Open Channel Design Chapter 13 - Storage Chapter 14 - Stormwater Quality (Revised July 1, 2019)Water Quality Treatment Matrix (Revised September 2019)Chapter 14 - Administrative Requirements (New July 1, 2019)20-10 Calculator (Revised April 2023)

Website Accessibility Statement

Southeast Metro Stormwater Authority (the "District") is committed to ensuring that its services are accessible to all members of the public. As part of this commitment, the District strives to provide an accessible website compatible with the Web Content Accessibility Guidelines (WCAG) version 2.1, AA, and commercial screen reading software. Features of the website are created to allow individuals with vision and other impairments to understand and use the website to the same degree as someone without disabilities.

If you need any special assistance or accommodations:

Contact our compliance support team via telephone at: (888) 765-1970

Ongoing Compliance Information

Compliance Coordinator

The District has designated a Compliance Coordinator for website disability-related accommodations. The Compliance Coordinator has received training in website accessibility and updates the site in accordance with those best practices and requirements.

Compliance Procedures

The District is working to ensure all website content complies with the Americans with Disabilities Act and controlling State laws. In an ongoing effort to continually improve and remediate accessibility issues, the website is regularly scanned to ensure ongoing compliance, and timely changes are made to any inaccessible content if found.

Accessible Documents Policy

The District is committed to providing all documents hosted on the website in an accessible format or making accessible alternatives available.

Linked Documents and Third Parties

Please note that this site may link out to third-party websites that do not have accessible content. This site may also include documents provided by third parties. While we cannot control the accessibility of content provided by third parties, we are happy to assist any member of the public with reading and accessing content on our site.

Report a Website Accessibility Issue

We are committed to your ability to access all content, and we will respond to all requests in a timely manner. If you need assistance or accommodations while accessing content on this website, please contact our Compliance Coordinator via the form below: