Successfully reported this slideshow.
We use your LinkedIn profile and activity data to personalize ads and to show you more relevant ads. You can change your ad preferences anytime.

Integrating Flood Risk Into Catchment Management - Michael Butts (DHI)

1,359 views

Published on

Integrating Flood Risk Into Catchment Management - Michael Butts, Head of Innovation (DHI)

Delivered at: -

ICE Flooding 2014:
Sustainable Flood Risk Management for Communities and Infrastructure
13 May 2014 - London, UK

http://www.ice-conferences.com/ice-flooding-2014/

Published in: Science
  • Be the first to comment

  • Be the first to like this

Integrating Flood Risk Into Catchment Management - Michael Butts (DHI)

  1. 1. INTEGRATING FLOOD RISK INTO CATCHMENT MANAGEMENT Michael Butts Head of Innovation, DHI
  2. 2. Structural Non-structural Dikes Zoning controls Polders Regulation of construction on flood plains Flood Diversion channels Flood proofing Real time monitoring networks Flood forecasting Control structure e.g. gates Optimization of reservoir and structure operations Pumps Flood preparedness Reservoirs Public Educations Flood insurance
  3. 3. CARAVANS & OTHER DEBRIS
  4. 4. Natural flood level – estimated With dam break DAM BREAK Photo Courtesy of DHI DK.
  5. 5. ROADS or RIVERS
  6. 6. FLOODING from BELOW Via SEWERS
  7. 7. FLOODING from BELOW Via GROUNDWATER Source: NOAA - Tropical Storm Fay, 08. 20.2008
  8. 8. • Prone to winter floods of fresh water and salt water inundations in connection with extremely high tides • Much of the low-lying area is designated as a wetland of outstanding ecological importance • Conflicts between land and water management activities PARRETT RIVER FLOOD CHALLENGES Courtesy of Nick Elderfield, DHI UK.
  9. 9. • Nature Conservation Areas at the level of National and Europe • Wild Life Habitat Re-Establishment of Wetland in UK • Increasing Number of Breeding, Feeding & Overwintering of Birds • Meanwhile, Decreased Species Number PARRETT RIVER ECOLOGY Courtesy of Prof. Ian Cluckie Chairman FRMRC
  10. 10. Catchment-wide sustainable development FRMRC study basin • Changes in land use • Flood Retention Storage (FRS) • …. Land use management Significant local effects Limited benefits on the catchment scale Significant benefits in terms of catchment management. • Sediment management • Ecosystem services • … PARRETT RIVER Courtesy of Prof. Ian Cluckie Chairman FRMRC
  11. 11. • Extensive urban development • Drainage has led to • Reduction in aquifer recharge • Increased freshwater discharge to estuaries located south of Picayune Strand • Invasion of former wetland areas by upland vegetation • Loss of ecological connectivity • Increased the frequency of forest fires • But also subject to flooding BIG CYPRESS BASIN CHALLENGES
  12. 12. • Regular cycles of floods and droughts • Channel hydraulics including complex structure operations • Extremely flat topography and limited storage • Close interaction between the surface water and groundwater BIG CYPRESS BASIN CHARACTERISTICS
  13. 13. REAL-TIME CATCHMENT MANAGEMENT If FU5_U_L1 >= 13.7 ft AND FU4s_U_L2>= 12.5 ft more than 2 hrs THEN SEND EMAIL: “The water level in the Faka Union canal is extremely high, please check operational condition of gates FU#4 & FU#5
  14. 14. REAL-TIME CATCHMENT MANAGEMENT
  15. 15. Knowledge of river behaviour Measurements of river flows and diversions Forecast of inflows and demands COMPUTER AIDED RIVER MANAGEMENT (CARM)
  16. 16. CARM
  17. 17. WETLANDS & ENVIRONMENTAL RELEASES
  18. 18. Expect the unexpected … flood risk should be managed and planned both locally and at the catchment scale • To address fluvial, urban, groundwater & coastal flooding processes & their interplay • To resolve the conflict between protecting infrastructure & the built environment and restoring riparian ecosystems And to adapt effectively Move from flood forecasting to real-time catchment management SUMMARY
  19. 19. Michael Butts E-mail: mib@dhigroup.com Web: www.dhigroup.com For more information

×