wlw day 2: asia water develoment outlookwater security index by eva abal

8/3/2019 WLW Day 2: Asia Water Develoment OutlookWater Security Index by Eva Abal

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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



Key dimension 4: Restoring healthyr vers



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 . .



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



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

.



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



~80% of Rivers in Asia‐Pacific are not in good

–

80% 20%

1: The

Rationale:

Why?



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?



Underlying Principle: Balance

between

science,

monitoring

and

management

Knee jerk

Well-documenteddeclines

curiosity-drivenresearch

‐ Aquaculture

wlw day 2: asia water develoment outlookwater security index by eva abal

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