Stormwater management is the process of controlling rain, sleet, hail, and melting snow and ice that drains off rooftops, driveways, roads and other hard surfaces that do not allow water to permeate into the ground. Once the stormwater runoff reaches grass or wooded areas, some runoff will soak into the ground but a large amount must be collected into the storm drainage system. In Fairfax County, the storm drainage system is separate from the sanitary sewer system. The runoff enters the storm drainage system via inlets located in curbs, yards or open pipes. The pipe systems carry the runoff either directly to streams or to detention ponds. In some locations, the runoff flows off the ground and directly into streams.

Announcements

• Volunteer Opportunities

Flooding

• Belle View/New Alexandria Flood Protection (September 2003 flooding from Hurricane Isabel)
• Flood Investigation for Cameron Run/Huntington/Arlington Terrace (June 2006 flooding)
• General Information

Reports

• Stormwater Reports

Stormwater / Storm Drainage Facilities

• Floatables
• Municipal Separate Storm Sewer System (MS4) Permit
• Public Design Standards - Public Facilities Manual
• Storm Drainage System
• Stormwater Management Pond Maintenance Request Form
• Tree Preservation and Planting In and Around Stormwater Management Ponds

Streams and Floodplains

• Annual Reports on Fairfax County's Streams
• General Information About Floodplains
• Occoquan River Dredging Project
• Perennial Stream Identification and Mapping
• Riparian Buffer Restoration Project
• Stormwater and Stream Health Action Steps (PDF)
• Stream Protection Strategy Baseline Study
• Stream Quality Assessment Program
• Stream Stabilization and Restoration
  

Watersheds

• Countywide Watershed Planning
• Nonpoint Source Pollution Solutions
• What is a Watershed?
• Role of Regional Ponds