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 |
