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Public Services
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Flood Forum 2008
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Environment Agency, Flood Risk Management
Ian Tripp, Solent & South Downs,
Asset System Management Technical Specialist
Introduction
3. Works that the Environment Agency do in Romsey
- Flood Warnings
- Regulate works near to the main river
- Advise Planning Authority on flood risks
- Review flood risk assessments
- Maintenance and Inspection of assets
- Undertake long term Strategic Studies
- Catchment flood managment plans
- Strategy studies for specific risk areas
- Leads on to future works
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Maintenance
- Routine Maintenance - £25,000 annually
- Weed cutting, channel clearance
- Minor repairs - structures
- Water level control
- Clearance of grilles etc
- Closure of flood gates
- Operation of flood control structures
Photo: Test at Timsbury
Weedboom
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Asset Surveys and Inspections
- All Flood Defence structures recorded on Database
- Regular Inspection between 6 months and 3 years
- High risk areas more frequently, low risk less often
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Condition of flood Defences |
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Recent Maintenance Works
- Repairs to Fishlake Stream embankment by World of Water, sheet piling into embankment to stabilise
- Raising footpath and Fishlake Stream enbankment downstream of Fishlake Meadows road bridge
- Improvements to the Timsbury Weedboom site to make handling weed more efficient
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4. Future Plans
Future Maintenance Works
- Improvements to the Fishlake/Oxlease Siphon
- In design this year
- Construct next year
- Safer two stage trash grille
- Penstock to give more water control
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More Future Maintenance Works
- Fishlake to Oxlease Penstock (Industrial Estate) to be repaired in the next 2 years
- Review Management of Fishlake Stream where narrowing has taken place opportunity for habitat enhancements
- System Asset Managment Plans - 50 year needs of a river system such as Romsey
- Considers costs and benefits
- AAD £500k, Pilot study C/B 1:3+
- Direct funding to hight risk systems such as Romsey
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Penstock/sluice from Fishlake
Meadows to Oxlease Stream
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Maintenance |
Future Major Works
- Dependant on CFMP and Strategies
- CFMP Policy is likely to be P5:
- 'Take further action to reduce flood risk now and in the future'
- 1280 properties at risk now
- 1370 in future with climate change
- Annual average damages £1.5m rising to £2m
- 1 in 25 year event damages estimated £11.5m
- 1 in 100 year event damages estimated £24.3m
- Future 1 in 100 year damages estimated £28m
- Seen as high priority for detailed strategy
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CFMP Romsey
- Key driver for future is climate change
- Impact of new development
- Requirement to use Sustainable Urban Drainage Systems (SUDS) to manage surface run off
- Standard of protection is low in some parts of the town 1 in 5 year)
- Improvements to channel conveyance (Tadburn Lake) and localised raising of banks
- Managment of flows
- Creation of Washlands and strategic storage with opportunities for habitat enhancements
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