Transcript Integrated Water Resources Management (IWRM) Scoping Study for

National Action Plan for Climate Change
Support for the National Water Mission
SATLUJ PUNJAB–UPPER CATCHMENTS
Surface water resources inflow to Bhakra -major gap in
information
To yr: 2050
Temperature + 2 degree C –higher in the upper catchment than on
plains, may go higher
Precipitation and runoff some increase in precipitation, poor accuracy
Short term surface water –to 2020 no significant change; increased
melt flows from glaciers, reduced melt from snow.
Medium to long term from 2020
o insufficient data to confirm trend
o gradually effects of increased glacier and
snow melts will affect inflows to Bhakra.
o Bhakra can to an extent provide a buffer
but glacier loss will be significant.
Require: glacier mass, snow and glacier
melt response assessments
SATLUJ PUNJAB –LOWER CATCHMENTS
By mid century: + 2 degree C
Precipitation:+ 10-15% mainly runoff, limited recharge
Evapotranspiration: little change
Increased variability of rainfall patterns
oGroundwater 45% above sustainable levels
oSustainable GW-key to buffer against CC
oConjunctive SW and GW management
Joga Distributary: Simulated Changes in Groundwater Storage
10000
9500
Groundwater storage (Mm3)
9000
8500
8000
7500
7000
6500
6000
Reference
120 day rice
Direct seeded rice
Reduced losses
Rice Area reduced
5500
5000
Year of simulation
KHIPRA SUB BASIN MADHYA PRADESH
Climate Change: To 2050:
Temperature: + 2 degree C
Precipitation: + about 15% increase in annual rainfall +23% in
monsoon rains some decline in the non monsoon rains.
Increased variability of rainfall patterns
Present Issues
WATER QUANTITY + WATER QUALITY
olimited surface water, groundwater is key resource
ogroundwater overexploitation in some parts
o yield of surface water /groundwater more than
requirements,
oMost water is lost during rainy season
oWQ issues river and tributary streams very heavily
polluted and go dry for periods-no base flow
CAUVERY DELTA TAMIL NADU
Climate Change to 2050:
+2 Degrees C
No significant change in annual rainfall
South west monsoon would reduce by 10%
North east monsoon would increase by 1015%
Increased variability in rainfall patterns
Sea Level rise of 0.3 metres
PRESENT ISSUES
limited surface water during SW monsoon
•erratic, very intense NE monsoon causes flooding.
•saline intrusion, low lying land is unable to drain.
•groundwater used to supplement surface water -issues of
overexploitation and salinity intrusion.
•parts of the coast are eroding river mouths suffer from blockages
causing problems for fishing and flooding
Q: How to plan for climate change?
• Need a systematic WR planning process for
sub basins.
• Strategic Planning to follow IWRM,
participative and iterative
• Plans must be mainstreamed into
departments and districts for implementation
• CC. projections presently not adequate to
make concrete planning decisions-but can
support strategies and general direction.
IWRM UNIT
SPECIALIST INPUTS TO SUB-BASIN
PLANNING
-Climate Projections
-Hydrological Response at Basin Level to CC
-Basin Level Demand Assessment/Water
Balance
-Trans boundary Consultations
-Research
Strategic framework plan for three sub basins
Satluj
Kshipra
Cauvery
Strengthen agriculture and
marketing
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Conjunctive water management
conservation to reduce GW
demand
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Water resources and catchment
management and GW recharge
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Water quality, pollution
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Flood and Salinity Management
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Soft coastal protection
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Water supply and sanitation
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Institutional development,
regulatory and support measures
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Reasearch Studies
Glaciers & snow,
Conjunctive use
Conjunctive use
Hydrodynamic, GW
and coastal
modelling
Strategic framework plan for India Water Systems
CWC
Data Management
Specialist Inputs to
Sub Basin Planning
Sub Basin Framework
Planning
Integration of Sub
Basin Plans into Basin
Plans
Support for
Institutional
Framework, Capacity
building awareness
Sub Project
Implementation and
Investment
RBOs
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Institutes
States
Support
consultants
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Eight year programme
Project Preparation and Design
Project Implemenation Phases
Project 1
Project 2
Project 3