Drainage Assessment Checklist

• Site

• Date and Time of Inspection

  Date

• Personnel

• Location
  Address

General inspection items

• Is there any evidence of erosion, channeling, ponding (were not desirable) or other poor hydraulic performance?

  No

  Yes

  N/A

• Is there any evidence of accidental spillages, oils, poor water quality, odors or nuisance insects?

  No

  Yes

  N/A

• Have any health and safety risks been identified to either the public or maintenance operatives?

  No

  Yes

  N/A

• Is there any deterioration in the surface of permeable or porous surfaces (e.g. rutting, spreading of blocks or signs of ponding water)?

  No

  Yes

  N/A

Silt/sediment accumulation

• Is there any sediment accumulation at inlets (or other defined accumulation zones such as the surface of filter drains or infiltration basins and within proprietary devices)?

  No

  Yes

  N/A

• State depth (mm) and extent

• Is removal required?

  No

  Yes

  N/A

• State waste disposal requirements and confirm that all waste management requirements have been complied with (consult environmental regulator)

• Is surface clogging visible (potentially problematic where water has to soak into the underlying construction or ground (e.g. underdrained swale or infiltration basin)?

  No

  Yes

  N/A

• Does permeable or porous surfacing require sweeping to remove silt?

  No

  Yes

  N/A

System blockages and litter build-up

• Is there evidence of litter accumulation in the system?

  No

  Yes

  N/A

• Is this a blockage risk?

  No

  Yes

  N/A

• Is there any evidence of any other clogging or blockage of outlets or drainage paths?

  No

  Yes

  N/A

Vegetation

• Is the vegetation condition unsatisfactory (density, weed growth, coverage, etc)? (Check against approved planting regime.)

  No

  Yes

  N/A

• Does any part of the system require weeding, pruning or mowing? (Check against maintenance frequency stated in approved design.)

  No

  Yes

  N/A

• Is there any evidence of invasive species becoming established? (If yes, State action required)

  No

  Yes

  N/A

Infrastructure

• Are any check dams or weirs in bad condition?

  No

  Yes

  N/A

• Is there evidence of any accidental damage to the system (e.g. wheel ruts?)

  No

  Yes

  N/A

• Is there any evidence of cross-connections or other unauthorized inflows?

  No

  Yes

  N/A

• Is there any evidence of tampering with the flow controls?

  No

  Yes

  N/A

• Are there any other matters that could affect the performance of the system in relation to the design objectives for hydraulic, water quality, biodiversity and visual aspects? (Specify.)

  No

  Yes

  N/A

Completion

• Observations and Recommendations

• Proposed date for next inspection

  Date

• Full name and signature of the personnel

  Sign