RIVERS: Flood Management Case Study
- Created by: Thea Tuckey
- Created on: 20-12-17 09:14
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- RIVERS: Flood Management Case Study: Exe Catchment Flood Management Plan
- Reasons
- Urbanisation
- Steep Relief
- Bridges Constrict Flow
- Confluence
- Narrow Valleys
- Physical Evidence of Plan
- Soft Engineering
- Aforestation on surrounding land
- Flood plain zonation-prohibitation of development
- Provision of flood warnings by environment agency in Headquarters Met Office.
- Hard Engineering
- Dam built on Wimbleball Lake
- Weirs (ridge across bank; water flows over; creates turbulence; slows velocity
- Channel Straightening
- Exwick relief Channel
- Levees (increase channel capacity)
- Soft Engineering
- Document Plan
- Flood warning- 4 hours
- Management development
- Flood defence schemes
- Maintenance
- Major Incident Plan
- Flood Risk mapped
- Context
- Covers areas of 1500km2
- Annual rainfall 2300 mm
- Rivers have narrow valleys; respond rapidly to floods
- In 1960: 1,000 houses were flooded
- Reasons
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