Managing water resources variability for improved food security and livelihoods
Managing water variability: multiple dimensions
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Transcript of Managing water variability: multiple dimensions
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Managing water variability: multiple dimensions
Jeremy Bird International Water Management Institute
Photo: Fraser Sugden
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Consumers: poor affected most by food price fluctuations
Photo: ILRI
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Canal irrigated area Tank irrigated area Groundwater irrigated area
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The water resource: pressure on groundwater will continue
Source: Mukherji et al. 2013.
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Understanding the underlying problems facing marginalized groups in farming systems is essential for addressing climate variability, e.g. • pressures to seek employment
outside of agriculture• insecurity of land tenure• lack of access to credit, pumps• poor service provision • ….
Marginalized groups: concerned about more than climate variability
Photo: Fraser Sugden Sugden, F.; Maskey, N.; Clement, F.; Ramesh, V.; Philip, A.; Rai, A. Agrarian stress and climate change in the Eastern Gangetic Plains: Gendered vulnerability in a stratified social formation.
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Farmer adaptation: e.g. flood-tolerant rice
• 4 m tons of rice lost to floods in India and Bangladesh, annually• ‘Scuba’ rice resilient to complete submergence up to 17 days
Source and Photo: IRRI
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Rural development agencies: Linking knowledge to action in climate-smart villages
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Irrigation system manager: new potential to increase water productivity by identifying high performers
Doukalla Irrigation Scheme, Morocco
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Private sector response: Increasingly looking to reduce water footprint
Coffee in Viet Nam - 3% of GDP; employs around 2 million people• Water scarcity is a significant threat • Agronomic research showed benefit of ‘water stress’ and strategic
timing of irrigation to boost yield• Savings on water and production costs
Photo Credit: Creative Commons, Wikimedia
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2001 2012 2014
Insurance industry: looking for an objective indicator
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Urban planner / manager: What type and level of protection is appropriate?
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Source: McCartney and Smakhtin 2010
Planning agencies: Consider the full range of storage options
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Water resources planner: rethinking storage
Underground ‘taming’ of floods for irrigation (UTFI)
Source: Pavelic 2012
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Oct Nov Dec Jan Feb Mar Apr May Jun Jul Aug Sep0.2
2.2
4.2
6.2
8.2
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Natural flows
Environmental flow requirement
Environmental services: Maintaining natural variability
CropsHydropower
Industrial Regulation of water balance
Erosion control
Climate regulationSoil
formation
Nutrient cycling
Recreation
Multifunctional “green” basin
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Source: MRC
Transboundary manager: How is variability reflected in agreements?
Percentage allocation Adaptation – ‘buffer’
storage
Communication and consultation
Cross-sector trade-offs
Adapted from Drieschcova, Giodarno, Fischhendler, 2008
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