Water Resources

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Transcript Water Resources

United Nations Inter Agency Task Force Meeting
25 – 26 April 2002
Working Group 3 Contribution to the General
Discussion on:
DROUGHT
Risk, Vulnerability and Impact Assessment
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Drought Management
Challenge
- Why is it that despite the gradual onsite (‘creeping’) of
droughts, we are still unable to reduce the risk of
drought?
- Isn’t it suppose to be easier to manage as TIME is on
our side?
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Drought Risk
Drought: potential threat to humans and their welfare
(WG 1)
+
Vulnerability: exposure and susceptibility to losses
(WG 3)
=
Risk: probability of drought occurrence
Disaster: realisation of drought risk
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Social Vulnerability and Drought
Observations
Drought impacts are related to underlying conditions of:
** Population and Agricultural Resources
(INDICATORS: population density, cropland, irrigated land, cereal
yields, food production)
** Income and Agricultural Investment (Econ. Dev.)
(INDICATORS: GNP per capita, agricultural GDP, GDP growth, public
agricultural research)
** Food Security
(INDICATORS: household food expenditure, refugees, adult female
literacy, infant mortality)
** Water Resources (Water Use)
(INDICATORS: water resources, withdrawal, per capita withdrawal,
withdrawal/resources)
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Suggestion of Four Aspects of
Drought Vulnerability
** Population and Agricultural Resources
Agricultural resources are widely varying between
regions
** Income and Agricultural Investment (Econ. Dev.)
Indicators of agricultural incomes highlight the
enormous disparity in per capita GNP (from over
$20,000 to less than $500)
** Food Security
- disparities in household status and food security
** Water Resources (Water Use)
- Water resources vary widely between regions
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Drought Regional Indicators
- The crude indicators reinforce the conception of
vulnerability as a relative construct. Drought does not
affect all nations, economies and households to the same
extent or by the same impact pathways.
- For the more poorer countries (drought life threatening)
much of Africa is highly vulnerable on all counts;
- For most developing countries drought vulnerability
constitutes a threat to livelihoods, the ability to maintain
productive systems and healthy economies
- For the developed countries drought poses significant
economic risks and costs for individuals, public
enterprises, commercial organisations and governments,
but could manage the impacts
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Conclusions
- plethora of existing Drought vulnerability approaches/
theories (hydrobiological, natural hazards paradigm,
vulnerability frameworks, Discourse theorists approach)
- more research should focus on relationships between
resource, social, economic and political circumstances;
on who is vulnerable and why
- vulnerability is dynamic. Drought is a relatively short-term
event (spanning several years); vulnerability changes at a
variety of time scales, from within a season to decade-long
trends in development.
- vulnerability and societal definitions of drought are
poorly monitored, especially in comparison to the effort
spent on predicting and monitoring hydrobiological
conditions
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Conclusions
- A holistic interdisciplinary approach to drought
management is required to take on the drought challenge
- There is a need to improve the knowledge base on
drought vulnerability. Data availability problem should
be solved. Data information sources should be mapped
and access to data facilitated.
- It is recommended that a concerted action of the ISDR
IATF Working Groups be initiated to identify and
prioritise key needs in drought management in order to
focus on realistically manageable activities.
ISDR IATF Challenge
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United Nations Inter Agency Task Force Meeting
25 – 26 April 2002
THANK YOU!
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