National Action Plan for Climate Change

Support for the National Water Mission

SATLUJ PUNJAB–UPPER CATCHMENTSSurface 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

5000

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Year of simulation

Joga Distributary: Simulated Changes in Groundwater Storage

Reference

120 day rice

Direct seeded rice

Reduced losses

Rice Area reduced

oGroundwater 45% above sustainable levelsoSustainable GW-key to buffer against CCoConjunctive SW and GW management

By mid century: + 2 degree CPrecipitation:+ 10-15% mainly runoff, limited rechargeEvapotranspiration: little changeIncreased variability of rainfall patterns

KHIPRA SUB BASIN MADHYA PRADESH

Climate Change: To 2050:Temperature: + 2 degree CPrecipitation: + 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 QUALITYolimited surface water, groundwater is key resource ogroundwater overexploitation in some partso yield of surface water /groundwater more than requirements, oMost water is lost during rainy seasonoWQ issues river and tributary streams very heavily polluted and go dry for periods-no base flow

PRESENT ISSUESlimited 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

CAUVERY DELTA TAMIL NADU

Climate Change to 2050: +2 Degrees CNo significant change in annual rainfallSouth west monsoon would reduce by 10%North east monsoon would increase by 10-15%Increased variability in rainfall patternsSea Level rise of 0.3 metres

• 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.

Q: How to plan for climate change?

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

IWRM UNIT

Satluj Kshipra CauveryStrengthen 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 √ √

Flood and Salinity Management √

Soft coastal protection √

Water supply and sanitation √

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 three sub basins

CWC RBOs Institutes States Support consultants

Data Management √ √Specialist Inputs to Sub Basin Planning

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Sub Basin Framework Planning

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Integration of Sub Basin Plans into Basin Plans

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Support for Institutional Framework, Capacity building awareness

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Sub Project Implementation and Investment

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Strategic framework plan for India Water Systems

Eight year programme

Project Preparation and DesignProject Implemenation Phases

Project 3

Project 1Project 2