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Asia Water Develo ment OutlookWater Security Index
1: at s y ng ouse o nee s
KD2: Supportingproductive economies
KD3: Managing vibrantand livable cities
KD%: Buildingresilient communitiesKD4: Restoring healthy rivers
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Key dimension 4: Restoring healthyr vers
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River Health Index
Pressures/Threats Vulnerability/Resilience
Alteration toNatural Flows
Biological Factors
0.22 0.28 0.30 0.20
Vorosamarty et al., 2010. Global threats to human water security . .
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Components Themes Indicators WeightingThreats Pressures Watershed Disturbance
Land use impacts and poor stewardship
Cropland 0.31Imperviousness 0.25
Livestock density 0.18
Wetland disconnectivity 0.26
Pollution
Pollutant loads/discharges into the rivers Soil salinization 0.08
Nitro en loads 0.12
Phosphorous loads 0.13
Mercury deposition 0.05
Pesticide loads 0.10
TSS loads 0.16
Organic loads
(BOD) 0.15
Potential acidification 0.09
Thermal impacts 0.11
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ComponentComponents Themes Indicators Weighting
Vulnerability/
Resilience
Alterations to Natural Flows
Water resource infrastructure and alterations to natural flow regimes
am ens y .
River network
fragmentation 0.29
Relative water consumption /
su l 0.22
Per capita water availability 0.06
Per crop
area
water
availability 0.07
Residency time change 0.12
Biological factorsRiver ecosystems
Invasion level (non‐native fish)0.26
Non‐native
fish
species
richness 0.21
Catch pressure 0.34
.
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Sources of Datan cators: o a ater ystem ro ect & ater ea t n ex
Method: Charles Vororosmarty’s Water Systems Analysis group (Global
ca e n t at ve on ver ea t – part o o a ater ystems ro ect
• Developed a Digital Water Atlas using a tool called Global Rapid IndicatorMapping System for Water Cycle and Water Resource Assessment (GRIMS)
,useful at the river basin, regional, national and global scale
• A number of datasets: These datasets have been compiled for a variety ofro ects and tools includin : –GWSP Digital Water Atlas (http://atlas.gwsp.org)
–Global Rapid Indicator Mapping System (http://rbis.sr.unh.edu, http://grims.sr.unh.edu)
–UNH/GRDC Composite Runoff Fields (http://www.grdc.sr.unh.edu)
– - . . . _ .
–Data Synthesis System for World Water Resources (http://www.wwap-dss.sr.unh.edu)
• Tool allows for customised data processing and indicator generation
• Calculates a Biodiversity Threat Index for Rivers – reverse of River Health Index
– High BD Threat Index – Low RH index
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~80% of Rivers in Asia‐Pacific are not in good
–
80% 20%
1: The
Rationale:
Why?
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River HealthIndex
RiverManagement
Index
‐
assessment of river health based on a variety of drivers and
indicators of river health
• River Management Index (IWRM Score Card) ‐provides
a
qualitative assessment of management actions in place to
2:
The Methodology:
How?
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Underlying Principle: Balance
between
science,
monitoring
and
management
Knee jerk
Well-documenteddeclines
curiosity-drivenresearch
‐ Aquaculture