Dry Weather Diversion

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Dry Weather Diversion
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Dry Weather Flow Diversion
PPDG Page B-23

• Concept diverts non-storm water and low flows
  to sanitary sewer system for conveyance to
  Publicly Owned Treatment Works (POTW)
• May consist of a berm or other means to divert
  low flows to the sanitary sewer and bypass high
  storm flows to the storm drain system

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Dry Weather Diversion - Siting Criteria
PPDG Page B-24

• Dry Weather flow is persistent over significant
  parts of the year
• A relatively easy connection to the sanitary
  sewer is available
• The POTW is willing to accept additional flow
  during the dry season
• Diversion is recommended by the local health
  officials to benefit receiving waters

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Target Pollutants
Dry Weather Diversion
PPDG Table 2-2, Page 2-7
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Dry Weather Diversion
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Dry Weather Diversion
Dry Weather Diversion
Station Well Pump
Wastewater Treatment Plant
Bermsin stormwaterchannels
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Dry Weather Diversion
Dry Weather Diversion

• Actual design of Dry Weather Diversion structures
  are normally provided by the Publicly Owned
  Treatment Works (POTW)
• Consult your District NPDES Storm Water
  Coordinator

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Questions