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David Evans Jeremy Jones. CARDIFF EAST: MAXIMISING THE USE OF HISTORIC SEWERAGE ASSETS. Trehafod Storm Tank. Rhondda Valleys. Y&P Trunk Sewer. Cardiff East. Kimberley Road CSO. Tongwynlais CSO. Aberporth Road CSO. Eastern District Pumping Station. Cardiff WwTW.

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Presentation Transcript
cardiff east y p catchments

Trehafod Storm Tank

Rhondda Valleys

Y&P Trunk Sewer

Cardiff East

Kimberley Road CSO

Tongwynlais CSO

Aberporth Road CSO

Eastern District Pumping Station

Cardiff WwTW

Cardiff East / Y&P Catchments
5 year 600 min storm

LAG

Cardiff East Catchment

Y&P Trunk Sewer

Long Drain Down Times

Storm Responsive

5 Year 600 Min Storm
lower cardiff east y p catchments

To Sea

Kimberley Road

Newport Road

Eastern District Pumping Station

Lower Cardiff East / Y&P Catchments
control principles
Control - Principles
  • Split catchment into sub-areas where flooding locations are known and understood
  • Each sub-area to have:
    • Primary point of relief sufficient to manage flood risks
    • Secondary point of relief for when operation of primary point is impaired
  • Co-ordinate points of relief in the event that rising sewer levels need a strategic / catchment wide response
monitoring and control points

Cynon

Trehafod

Kimberley Road

Newport Road

Tongwynlais

Rumney Hill

Hailey Park

Eastern District Pumping Station

MONITORING POINT

Aberporth Road

CONTROL POINT

Monitoring and Control Points

ANCILLARIES

control overall aims
Control – Overall Aims
  • To manage the transport capacity and to ensure that flows are managed as necessary, stored within the Catchment or split under extreme storms
  • To maximise the use of the storage (previously tidal) before spilling
  • To eliminate any risk of flooding in 1 in 5 year event
  • To manage the risks of flooding up to 1 in 30 year event
  • To provide a risk management strategy for failures within the system
integrated catchment plan
Manage flood risks for Dŵr Cymru Welsh Water

Remove stormwater from system at strategic locations

Monitor, monitor and monitor system performance

Improve system serviceability / longevity

Dialogue between Capital and Operations staff

Approval of Environment Agency

Integrated Catchment Plan