Sign In
Skip navigation links
SMC Home
About the CommissionExpand About the Commission
Contact Us
Floodplain/ Stormwater/ Wetlands RegulationsExpand Floodplain/ Stormwater/ Wetlands Regulations
Lake County WatershedsExpand Lake County Watersheds
Best Management PracticesExpand Best Management Practices
Rain GaugesExpand Rain Gauges
Flood InformationExpand Flood Information
RFPs Bids
PublicationsExpand Publications
Video Library
Lake County Stormwater Management Commission  

Operations and Maintenance of Stormwater Facilities  

Routine and non-routine maintenance is necessary in ensuring the longevity of all stormwater best management practices (BMPs). Action must be taken as soon as a problem occurs to limit the potential negative impacts. There will be possible cost-savings in the long run as a result of well-maintained BMP structures as well as overall improved water, aesthetics, and air quality.

Examples of Proper Maintenance

  • Regularly inspect and clean out debris from inlet and outlet areas (monthly);
  • Mow routinely unless there is native vegetation (as needed);
  • Check your rain garden, vegetated swale or naturalized detention with native vegetation to ensure that the plants are adequately established;
  • Consider periodic burns on a bi-annual schedule or yearly in early spring or late fall for native vegetation;
  • Remove non-native vegetation like purple loosestrife.
  • Remove woody vegetation from all embankment areas (as needed);
  • Stabilize/revegetate side and bottom areas in detention basins and pollution contributing areas to reduce incoming sediments (as needed);
  • De-thatch grass to remove accumulated sediment and debris (every 2 years);
  • Aerate compacted areas to promote infiltration (every 2-3 years);
  • Monitor sediment accumulations, and remove sediment when the pool volume has become significantly reduced (roughly 15-20% of the basin) or when the basin becomes stagnant (semi-annual inspection, remove sediment 2-10 years for dry basin and 5-15 years for wet basins);
  • Replace BMP mechanical components, reconstruct embankments and spillways (every 20 years if maintained);
  • Inspect for invasive species, replace non-native vegetation with native vegetation (monthly); and
  • Replant wetland plants if not sufficiently established (as needed).

See also:

  • A Citizen's Guide to Maintaining Stormwater Best Management Practices
  • Homeowners Association Maintenance Responsibilities for Subdivision Stormwater Systems

Purple loosestrife: Dave Brenner, Michigan Sea Grant 

Contact Us
Parking and Directions
Website Disclaimer
Site Map
Lake County, Illinois
18 N. County Street
Waukegan, IL 60085
About Our County
Alert Lake County
Find Help