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 October 2020)
Most Popular Pages
For Park, Metro Dist. & HOA Maint.
Information For Businesses
- GESC Considerations for Pipe Relining Operations
- GESC Considerations for Minor Right of Way/Streetscape Construction
- GESC Considerations for Minor Commercial Construction
- Annual Bore Utility Permits
- Land Development Review Process Explained
- Am I in the Floodplain?
- Working in the Floodplain
- Maintaining your pond or other stormwater feature
- Grant Program
- Pollution Prevention