LID Maintenance

Maintenance for LID devices, just like any infrastructure, should be anticipated. Ideally, a maintenance plan for each LID device should be developed and followed.

The following tips may be useful:

  • For the first year after installation, inspections should be conducted monthly and after major storms. Check for sinkholes, erosion, washouts, or excessive ponding.
  • Bioretention areas should be kept free of weeds.
  • Stormwater wetlands may need to be treated to remove unwanted invasive species such as cattails.
  • An adequate layer of mulch (2-3 inches) should be maintained. 
  • Clogged soils must be replaced to restore function to the device. 
  • Pruning of plants should be done as needed to maintain proper infiltration. 
  • Do not add additional fertilizer. Stormwater runoff and compost in the soils should provide adequate nutrients for plantings.


Treated cattails at Carolina Forest Recreation Center

See maintenance sections for each LID treatment type in Chapter 4 of the SC Coastal LID Manual

Bioretention System Maintenance Guide

Porous Pavement Maintenance Guide


LID Operations and Maintenance Manual - Seattle Public Utilities


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