Storm Water & Wetland Management

McIntyre Gulch, DFC, Denver, COUrban storm water runoff is one of the leading causes of pollution in rivers and lakes. In fields and forests, rain is absorbed by soil or taken up in tree or plant roots. In developed area, rainwater travels across paved areas and accumulates pollutants such as oil and grease, chemicals, nutrients, metals, and bacteria which are then carried to gutters, gullies and storm-sewer systems. Heavy precipitation or snow melt may cause sewer overflow which, in turn may lead to contamination of water sources with untreated human and industrial waste, toxic materials, and other debris.

This page offers links and procedures to ensure that:

  • Storm drains are protected from contamination and construction sediment
  • Awareness, training and education
  • Storm water best management practices.

Agency clients at the Denver Federal Center can count on the GSA to implement programs that remediate and abate storm water runoff. GSA implemented a construction site inspection program to reduce sediment discharge to storm water. GSA has also placed distinct markers near storm drains to increase public awareness of potential discharges to McIntyre Gulch and the Platte River. Master site plan for the DFC [PDF - 893 KB]

Observance When
World Wetlands Day February 2
International Day of Action for Rivers March 14
World Water Day March 22
Earth Day April 22
American Wetlands Month May
National Wilderness Month September
National Estuaries Day September 24
World Rivers Day Last Sunday in September
Sustainability and Environmental Management Program
Objectives Improve storm water quality
Comply with the US EPA Region 8 National Pollutant Discharge Elimination System (NPDES) General Permit for Storm Water Discharge from Federal Facility Municipal Storm Sewer System
Targets Eliminate all non-storm water discharge from the storm water system

Federal, State, and Local Policy and Regulations

Education and Outreach

Storm water Training

Additional Resources

Procedures and DFC MS4 Records

File Name Date Revised
2018 MS4 Annual Report [PDF - 523 KB] 3/26/2019
MS4 Annual Report [PDF - 440 KB]
To view attachments, please contact Bill Fieselman ( or Niki Lecander (
Stormwater Management [PDF - 420 KB] 07/06/2012
Wetlands and Streams [PDF - 317 KB] 02/25/2013
DFC 2013 Storm Water Management Plan [PDF - 2 MB] 07/24/2013
DFC 2014 MS4 Annual Report Submittal [PDF - 4 MB] 04/13/2015
2015 GSA DFC Stormwater Brochure [PDF - 263 KB] 04/13/2015

For more information on this program, please contact:

Last Reviewed: 2021-09-17