The Southeast Metro Stormwater Authority (SEMSWA) is responsible for stormwater services as well as various drainage and flood control facilities within its service area, which contains the City of Centennial, developed areas of western unincorporated Arapahoe County and a small portion of Douglas County.

The Southeast Metro Stormwater Authority (SEMSWA) was formed on September 19, 2006 by an intergovernmental agreement between the City of Centennial, County of Arapahoe, Arapahoe County Water & Wastewater Authority, East Cherry Creek Valley Water and Sanitation District and Inverness Water and Sanitation District.  SEMSWA is a political subdivision and a public corporation of the State, falling under the guidelines of Colorado State statute for a "drainage authority" (29-1-204.2 C.R.S.).

SEMSWA reviews and approves various plans and reports for storm water compliance through the planning and development process. These plans and reports include but are not limited to: 

  • Land use cases
  • Construction documents
  • Drainage plans and reports
  • Grading, erosion and sediment control plans and reports
  • Floodplain development

SEMSWA is responsible for managing the City of Centennial's federally mandated MS-4 permit as well as enforcing the various drainage and storm water regulations and ensuring that the applicant is aware of them. For more information, visit SEMSWA or call (303) 858-8844.

  • Applications for Centennial 101, a free program to discover how our City works, are available until Friday, June 30. In just seven weeks participants will be involved in fun and engaging lessons whi...

  • Last August, the City of Centennial launched Go Centennial, a streamlined, innovative and tech-savvy approach for people to get to and from the Dry Creek Light Rail Station in Centennial. Go Centenni...

  • The City of Centennial is currently accepting applications to fill openings on the Senior Commission.  This is an Advisory Board to City Council to foster a greater understanding of the concerns of s...

  • The results are in! Centennial Center Park’s splash pad ranked fifth on USA Today’s latest 10Best Readers' Choice travel award contest. Seattle’s International Fountain came in first. Travel experts ...

  • Centennial Airport is closing the main runway, RWY 17L/35R, beginning May 30 as crews begin a federally-funded surface rehabilitation project. The closure will remain in effect through July 6, 2017. ...

  • The City of Centennial and Matt Sturgeon have successfully negotiated the terms and conditions of a contract for Mr. Sturgeon to serve as Centennial’s next City Manager.  The employment agreement rec...

  • The City of Centennial was voted as the Best Place to Move/Open a Business for the Best of Colorado Business Choice Awards presented by ColoradoBiz. The 25,000 votes were tabulated by DataJoe on be...

Quick Contact Info:

City of Centennial
13133 East Arapahoe Road
Centennial, CO  80112

(303) 325-8000 - 24 Hour Citizen Response Center
(720) 488-0933 - Fax Number

 

Sitemap

ADA Notice

Contact Us

City of Centennial
Powered by Real Time Solutions - Website Design & Document Management