Local Perspective:

1
Local Perspective

• Montgomery County Planning Commission and
  Stormwater Management

2
Stormwater Planning
3
Program Changes

• Initial plan release rate emphasis
• Inter-county coordination
• Consultants
• Infiltration, water quality, streambank
  protection, peak rate control
• Response to BMPs

4
Swamp Creek Plan

• 50 release rate across the watershed
• Subbasins experiencing a 5 increase in flows
• Decrease in affected sub basins as release rate
  decreases
• Only one subbasin affected at 50
• Below 50 deemed too restrictive

5
Promote Variety of BMPs

• Recommend in land development reviews
• Reports, guidebooks and demonstrations
• Structural
• infiltration basins
• wet ponds
• vegetated swales
• Non-structural
• Land use based controls

6
Preserving Hydrology
7
Biofiltration
Mown grass Meadow
8
Planting Procedures

• Trees, shrubs, meadows
• Maintenance
• No low-flow channel
• Multiple benefit

9
Lower Providence Basin Naturalization
10
Low Impact Development

• Concentrates development on one area of site in
  exchange for providing open space and natural
  areas elsewhere on site.

11
Standard Development

• Extensive grading, clearing, and impervious
  surfacing
• Individuals decide the fate of resources
• No open space preserved

12
Preserve Woods and Stream

• Wooded stream corridor is preserved
• Controls can be closer to source
• Disconnected impervious areas

13
Riparian Buffers

• Restoration
• Guidebook
• Preservation
• Guidebook and ordinance