Water from rainfall and spray park flows over land to concrete flow channels and into rain gardens, where water soaks into soil and pollutants are filtered out. Any overflow moves through flow channel on to the next garden, with final discharge at storm sewer.
Regular inspection and maintenance are critical to ensure that rain gardens function as designed and should be performed per the schedule below as part of routine park maintenance operations:
Maintenance & Inspection Activities
Access flow channels and clear out sediment build-up, organic debris and trash with leaf-blower and trash-picker
Remove any weedy or invasive plants
Remove sediment build-up from surface of infiltration bed and sediment forebay**
Remove dead plants and replace with approved species
Check for and repair soil erosion gullies within the gardens
Check for and fill animal burrows in or around rain gardens
Check signage and report if missing or faded. Clean if tagged.
All inspections/activities are intended to be performed during the growing season, and on an as-needed basis
Sediment shall be disposed of offsite in a pre-approved location
TROUBLESHOOTING AND LONGTERM MAINTENANCE
Some maintenance and inspection considerations are beyond the basics and may require some troubleshooting
Source: MaintainX (Community Member)