Volume 2-05, Chapter 3 - City of Wichita

Section 3.4.1 - Conventional Dry Detention Pond
3.4.1 Conventional Dry Detention Pond Other Water Quantity Facility
Description: A surface storage basin or facility
designed to provide water quantity control through
detention of stormwater runoff.
KEY CONSIDERATIONS
DESIGN CRITERIA:
• Designed for runoff quantity (peak flow) control
ADVANTAGES / BENEFITS:
• Typically less costly than stormwater (wet) ponds for
equivalent flood storage
• Used in conjunction with water quality structural control
• Recreational and other open space opportunities between
storm runoff events
DISADVANTAGES / LIMITATIONS:
• Controls for stormwater quantity only
MAINTENANCE REQUIREMENTS:
• Remove debris from inlet and outlet structures
• Maintain side slopes/remove invasive vegetation
• Monitor sediment accumulation and remove periodically
• Dam inspection and maintenance
POLLUTANT REMOVAL
-- Total Suspended Solids
-- Nutrients – Total Phosphorus & Total Nitrogen
-- Metals – Cadmium, Copper, Lead & Zinc
-- Pathogens – Coliform, Streptococci & E. Coli
STORMWATER MANAGEMENT
SUITABILITY
Water Quality Protection
Channel Protection
On-Site Flood Control
Downstream
IMPLEMENTATION CONSIDERATIONS
M
L
M
Land Requirements
Relative Capital Costs
Maintenance Burden
Residential Subdivision Use: Yes
High Density/Ultra-Urban: No
Drainage Area: No restrictions
Soils: Hydrologic group ‘A’ and ‘B’ soils
may require pond liner if groundwater
mounding is not desirable
Other Considerations:
• Recreational and open space uses for
dry detention
L=Low M=Moderate H=High
Volume 2, Technical Guidance Page 3 - 181