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Water for people.pdf - WHO Thailand Digital Repository

Water for people.pdf - WHO Thailand Digital Repository

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22Table of contentsGeneral Context 484Map 22.1: Locator map 484Map 22.2: Basin map 484Greater Tokyo, JapanCoordinated by: The National Institute<strong>for</strong> Land and InfrastructureManagement – Ministry of Land,Infrastructure and Transport of Japan(NILIM-MLIT)<strong>Water</strong> Resources 486Hydrology 486Table 22.1: Hydrological characteristics of the five river basinsin Greater Tokyo 485Figure 22.1: Variation in river water quality – biological oxygen demand(BOD) levels 487Human impacts on water resources 486Figure 22.2: Variation in the chemical oxygen demand (COD) dischargeload by sector in Tokyo bay 487Challenges to Life and Well-Being 488<strong>Water</strong> use in industry and cities 488Figure 22.3: Rate of ground subsidence 488Securing the food supply 489Protecting ecosystems 489Management Challenges: Stewardship and Governance 489<strong>Water</strong> governance 489Table 22.2: <strong>Water</strong> governance in Japan 490<strong>Water</strong> rights 489Developing water resources 490Compensation measures <strong>for</strong> upstream inhabitants 490Drought measures 491Using water effectively 491River improvement measures 491Levee maintenance 491Non-structural measures 491Managing the environment 491Monitoring the ecosystem 491Figure 22.4: Revision of the River Law 492Evaluating the environmental impact 491Improving the water quality 492

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