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Revision as of 14:38, 3 August 2022

Typical inspection/maintenance frequencies for stormwater wetlands
Link to this table

Inspection Items Maintenance Items Frequency
  • Ensure that at least 50% of wetland plants survive.
  • Check for invasive wetland plants.
Replant wetland vegetation One time - After First Year
  • Inspect low flow orifices and other pipes for clogging
  • Check the permanent pool or dry pond area for floating debris, undesirable vegetation.
  • Investigate the shoreline for erosion
  • Monitor wetland plant composition and health.
  • Look for broken signs, locks, and other dangerous items.
  • Mowing – minimum Spring and Fall
  • Remove debris
  • Repair undercut, eroded, and bare soil areas.
Monthly to Quarterly or After Major Storms (>1”)
  • Monitor wetland plant composition and health.
  • Identify invasive plants
  • Assure mechanical components are functional
  • Trash and debris clean-up day
  • Remove invasive plants
  • Harvest wetland plants
  • Replant wetland vegetation
  • Repair broken mechanical components if needed
Semi-annual to annual
  • All routine inspection items above Inspect riser, barrel, and embankment for damage
  • Inspect all pipes
  • Monitor sediment deposition in facility and forebay
  • Pipe and Riser Repair
  • Forebay maintenance and sediment removal when needed
Every 1 to 3 years
Monitor sediment deposition in facility and forebay Forebay maintenance and sediment removal when needed 2-7 years or 50% loss of sediment forebay storage
Remote television inspection of reverse slope pipes, underdrains, and other hard to access piping
  • Sediment removal from main pond/wetland
  • Pipe replacement if needed
5-25 years