Latest News & Alerts
GESC Manual Update
SEMSWA will be implementing this updated Grading, Erosion, and Sediment Control (GESC) Manual to manage land disturbances and construction sites in the SEMSWA Service Area. GESC control measures protect our streams and water bodies from sediment and construction...
Cherry Creek Major Drainageway Plan
Please visit the Cherry Creek MDP website (story map format) Please visit our Master Planning web page for a list of Master Plans in SEMSWA's Service Area
Please See Careers Page and Apply SEMSWA is currently accepting applications for open positions. Please visit our Career Opportunities page.Most Popular Pages In City of Centennial Floodplain Development Permit (FPDP) Grading, Erosion and Sediment Control (GESC)...
5 Easy Ways YOU Can Help Water Quality
Takin' it to the streets! It may surprise you to hear that streets are fundamental to managing stormwater. But “City Right-of-Way” or ROWs are the initial channel for storm drainage after rain. Streets are designed for rain or snowmelt to flow to the gutters which...
Post Construction Water Quality Facilities Information
Water quality facilities must be periodically inspected and maintained to ensure functionality. Each water quality facility constructed in the SEMSWA service area must have an Operations and Maintenance (O&M) Site Plan and Maintenance Agreement. The purpose of...
Green Acres Tributary Channel Improvements Construction Notification
Where: Located between S. Chambers Rd. and S. Jordan Rd. and, south of E. Mineral Ave. Just north of the Arapahoe-Douglas County Line along the Green Acres Tributary to the confluence of Happy Canyon Creek southwest of Jordan Rd.What/Why: Channel stabilization and...
New Standards and Regulations
GESC MANUAL, SMM: CHAPTER 14 (STORMWATER QUALITY), AND MAINTENANCE AGREEMENT A PUBLIC HEARING WAS CONDUCTED BY THE SEMSWA BOARD ON JUNE 26TH TO CONSIDER ADOPTION OF REGULATIONS AS THEY RELATE TO SEMSWA'S MS4 PERMIT, INCLUDING: Approval of the Post Construction...
SMM Update In Progress
Revisions are being made to the Stormwater Management Manual (SMM) for the purpose of updating standards and to create a common SMM with Arapahoe County. Please visit our webpage dedicated to this effort for updates. Most Popular Pages First list item Second list item...
Pollution Prevention for Residences
FRONT RANGE RESIDENTS CAN TAKE SIMPLE STEPS TO REDUCE POLLUTION OF OUR WATERWAYS AND STORM DRAIN SYSTEM. Our day-to-day activities have the potential to negatively impact water quality. Leaking automotive fluids, fertilizer, leaves and grass clippings from our yards,...
Trail Underpass Closure at Arapahoe Rd and Little Dry Creek
Where: E. Arapahoe Rd trail underpass at Little Dry Creek, approximately one-half mile west of S. Quebec St. Who: Trail users What: Closure of trail underpass on Little Dry Creek. SEMSWA will be placing signs and barricades at the entrance and exit to the trail...
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