Filtering and conveyance Print

Design Outcome

​​Both filter strips and swales achieve treatment of stormwater runoff while conveying it through the catchment. Specific mechanisms include:​
  • Contact with soil to detain runoff
  • Increased roughness to slow flow velocities and increase time of concentration
  • Filtering medium to coarse grained sediments through plant and soil materials.
Note: Technical design guide documents provide detailed advice for design and construction of devices.​

Better Design Practice

Rules of Thumb

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