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Structural stormwater Best Management Practices

This page is currently undergoing revision.

A structural stormwater Best Management Practice (BMP) is defined in the MS4 General permit as "a stationary and permanent BMP that is designed, constructed and operated to prevent or reduce the discharge of pollutants in stormwater".

Image showing categorization of best management practices as construction stormwater, pretreatment, structural, or non-structural BMPs

Use the links below or in the left side bar menu for information on different structural stormwater best management practices.

  1. Green roofs
  2. Permeable pavement
  3. Trees
  4. Bioretention
    1. Rain garden: see Bioretention
  5. Infiltration (infiltration trench, basin, dry well, and underground infiltration)
  6. Filtration
    1. Dry swale (Grass swale)
    2. Wet swale (wetland channel)
    3. High-gradient stormwater step-pool swale
    4. Sand filters
  7. Iron enhanced sand filter (Minnesota Filter)
  8. Stormwater ponds
  9. Stormwater wetlands
  10. Manufactured treatment devices
  11. Pretreatment practices
    1. Vegetated filter strips
    2. Pretreatment - Hydrodynamic separation devices
    3. Pretreatment - Screening and straining devices, including forebays
    4. Pretreatment - Above ground and below grade storage and settling devices
    5. Pretreatment - Filtration devices and practices
    6. Pretreatment - Other pretreatment water quality devices and practices
  12. Chemical treatment