20110228.sun yangbo
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20110228.sun yangbo






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20110228.sun yangbo Presentation Transcript

  • 1. Yellow River Water Allocationand Environmental Flow Management Sun Yangbo Yellow River Conservancy Commission
  • 2. River Length (km) 1. Nile 6670 2. Amazon 6436 3. Yangtze 6300 4. Mississippi 6021 5. Yellow River 5464 6. Mekong 48802005/10 2
  • 3. Facts and Numbers YRCC HQ basin area 790,000 km2 river length 5,464 km elevation drop 4,480 m average rainfall 450 mm population 115 million total water 58 BCM resources2005/10 per capita water 550 m3 3
  • 4. Challenges for River Basin Management Floods Water Scarcity Water pollution Soil Erosion/Sediment
  • 5. Framework to Sustainable River Basin ManagementMission Maintain Healthy Life of the Yellow River Flood Flow Pollution SedimentIndicator safety regime control mgtActions 1 2 3 4 5 6 7 8 9 Real Digital ScaledTool Box Yellow Yellow Yellow River River River 5
  • 6.   1 × Ultimate target   “Keeping the Yellow River Healthy”  4 × Criteria (“the 4-nos”)   No embankment breaching   No river running dry   No water pollution beyond standard   No riverbed rising further  9 × Actions   Take measures to reduce sediment inflow to the Yellow River   Manage effectively the water resources utilization of the Yellow River basin and its related regions   Strengthen the study on water transfer plans to increase the water resources of the Yellow River   Establish water and sediment regulation system   Work out a scientific and reasonable general plan for the control and management of the lower river course   Create favourable hydrological process to mitigate the shrinking of the main channel   Meet water demands to maintain river itself cleaning capacity   Carry out Yellow River Delta management to reduce seawater impact to the lower reach   Maintain the ecological system sustainable in the Yellow River delta
  • 7. 1998: Call for Environmental Flow Management ProgramNew Challenges: Political Decision and publicRiver Runs Dry since consensus 1970s   Laws and policy making   Public participation  Water scarcity Demand of Environmental Flow  Climate Change Management  Economic development   river flow  Population growth   Ecological restoration  Transboundary river   Sediments transportation   Water quality
  • 8. Environmental Flow Management Program 1998-2010Water allocation and Environmental Flow  Legal measures, Public Consultation,  Technical measures   Water Allocation Scheme 58 bcm=37+21 bcm (EF)   Remote control and Real time control  Artificial Floods  Flushing river sediments  Flood plain and wetlands restoration  Improve river morphology and Reduce flood risk  Ecological restoration
  • 9. Water Quantity and Water Quality  Continuous river flow restored  in 1997, river dried for 226 days  since 1998, the river has flow continuously for 10 years  Water quality improved  Legislation of water pollution control  Pollution reduction and cleaner production Tech.  Monitoring and supervision enhanced  Water quality trends of mainstream of the Yellow River in 2002-2006 
  • 10. Riparian Wetlands  Wetlands  Comprise of river channel, flood plain, retention basin, lakes, etc.  The total area of the downstream floodplain about 3544 km2  The ecological status of the wetlands depend on the fresh water supply  Wetlands eco-system  habitat of the fishes and migration birds 万家 寨水  recovered from the dry up periods 库!
  • 11. Balance of Social and Ecological Benefits  A river provides social benefits   Flood control function   Drought control function   Water supply function   Hydro-power function   Navigation function   Water quality self-purification function   Recreation function  A river can be managed to optimise, or choose a balance of, the:   Social benefits   Ecological benefits  The River Health Index is an important tool to help achieve the balance
  • 12. River Health Index Social/economics Environmental Indicators… Ecology Physical form Hydrology Water quality Wetland vegetation Fish (remote sensing) Invertebrates Primary Vegetation productivity Survey and Hydraulic modelling habitatPresentation Heading