What are the opening hours?

Monday 8am - 4:30pm Tuesday 8am - 4:30pm Wednesday 8am - 4:30pm Thursday 8am - 4:30pm Friday 8am - 4:30pm

Southeast Metro Stormwater Authority

Home
United States
Centennial, CO
Southeast Metro Stormwater Authority

Directions Website Contact the organization

Since 2006, SEMSWA has provided stormwater management services for drainage and flood control facili

10/27/2026

SEMSWA was proud to be recognized with our project partners at today's Colorado American Public Works Association (APWA) awards and luncheon for our role in administration of the High Line Canal STAMP project!

The High Line Canal Stormwater Transition and Management Plan (STAMP)
represents a monumental accomplishment in public infrastructure
administration, providing a roadmap for transitioning the High Line Canal
from its historic role as an irrigation delivery system into a sustainable, multi-purpose regional greenway that preserves its environmental, recreational,
and community value while incorporating stormwater conveyance as a
compatible future use. The plan was led by the Mile High Flood District
(MHFD) in partnership with Arapahoe County Open Spaces and numerous
local stakeholders and jurisdictions along the Canal corridor.

10/22/2026

Revegetation is one of the most important steps in completing a construction project. The goal isn't just to build. It's to restore disturbed land with healthy vegetation that reduces erosion, improves water quality, and creates more resilient landscapes.

If you're developing or building within the SEMSWA service area, start thinking about revegetation before the first shovel hits the ground. Successful revegetation helps protect local waterways, cut down on construction costs by closing your project quicker, and keep soil where it belongs.

Learn more about how SEMSWA supports sustainable restoration practices throughout our service area.

10/20/2026

and SEMSWA are here to help. Please contact us if you don’t know your flood risk and visit mhfd.org/floodmap using the QR code above to learn more!

10/15/2026

Every dollar spent on flooding mitigation helps reduce future disaster recovery costs and strengthen community resilience on average, saving $6. Learn about mitigation and preparedness by visiting www.reducefloodrisk.org

10/14/2026

Did you know that you can make a positive impact on water quality by disposing of your leaves properly this fall? SEMSWA asks that you do your part to protect water quality by managing your leaf litter appropriately this season. Swipe to learn more!

10/10/2026

It’s a beautiful morning at Spring Creek Park! Come stop by the Touch-A-Truck event this morning from 10 am 1 pm where SEMSWA will have on display our vactor truck, camera van, and Splash Member water quality outreach booth!

10/07/2026

Renting? You may still be at risk during a flood. Look up your property’s flood risk and double check your address is visible to help in an emergency.

Renting in an area with flood risk? Renters can buy flood insurance for the contents of their homes.

09/29/2026

Rain is in the forecast.

Periods of heavy rain are expected tonight and tomorrow, which could lead to higher creek flows, ponding on roadways, and localized flooding in low-lying areas.

As the storm moves through the area, please remember:

- Never drive through flooded roadways.
- Keep children and pets away from flowing water and drainage channels.
- Allow extra travel time and use caution during your commute.
- Stay weather-aware and follow local forecasts and alerts.

Stormwater systems are designed to manage rainfall, but intense storms can quickly change conditions. Even a small amount of moving water can create dangerous situations.

SEMSWA will be monitoring conditions throughout the event. We're committed to helping protect people, property, and our waterways.

Stay safe, stay dry, and remember: Turn Around, Don't Drown. 💧

09/23/2026

What would you grab first in an emergency?

Think of the people and things you value most. What steps could you take today to protect those lives and your home from a future flood event?

Learn more at ready.gov

09/21/2026

SEMSWA is once again spreading the word about Storm Water Awareness Week which is occurring now, September 21st - 25th!

Are you a partner in the stormwater industry or someone who's interested in learning more about water quality? If so, we encourage you to check out the free webinars that will be occurring all this week at https://www.stormwaterawareness.org/ . While this year's theme is centered on erosion, the webinar topics range widely from managing stormwater compliance as an MS4 to construction dewatering operations and establishing stormwater treatment trains. We appreciate everyone who's contributed to this community-led event!

Address

Centennial, CO
80015-80016, 80111-80112, 80121-80122, 80161 (PO BOX)

Opening Hours

Monday	8am - 4:30pm
Tuesday	8am - 4:30pm
Wednesday	8am - 4:30pm
Thursday	8am - 4:30pm
Friday	8am - 4:30pm

Website

https://www.semswa.org/

Alerts

Be the first to know and let us send you an email when Southeast Metro Stormwater Authority posts news and promotions. Your email address will not be used for any other purpose, and you can unsubscribe at any time.