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Water for a food-secure world

RS & GIS applications to manage irrigated agriculture

S.A. Prathapar, on behalf of

Amarnath, Chemin, Karimi, Rebelo, Sharma, Siddiqui & Platonov

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Water for a food-secure world

If you can’t measure, you can’t manage!

• Relatively cheap and rapid method of acquiring up-to-date information over a large geographical area.

– Example: Landsat scene covers 180 km x 180 km at ground resolution of 30 every 16 days

• It is the only practical way to obtain data from inaccessible regions,

– Example: Antarctica, Amazonia.

• At small scales, regional phenomena which are invisible from the ground are clearly visible.

– Examples: faults and other geological structures. A classic example of seeing the forest instead of the trees.

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Water for a food-secure world

Operating Satellites

Source: Union of Concerned Scientists http://www.ucsusa.org/nuclear_weapons_and_global_security/space_weapons/technical_issues/ucs-satellite-database.html

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Selected Applications by IWMI

Water Productivity in IGP

Rice Wheat

Land Productivity in IGP

Rice Wheat

www.iwmi.org

Water for a food-secure world

Mapping Agro-wells

www.iwmi.org

Water for a food-secure world

Boro Paddy Mapping – West Bengal

2000 20102006

www.iwmi.org

Water for a food-secure world

WA+ Resource base sheet

 Indicators Definition

  Exploitable water fraction Explitable water divded by the net inflow

  Storage change fraction Fresh water storage change divided by exploitable water

  Available water fraction Available water divided by exploitable water

  Basin closure fraction Utilized flow divided by available water

  Reserved flow fraction Reserved outflows divided by the total outflow

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Water for a food-secure world

Nile Basin: Input RS data

Broad wetland classes derived from annual flood dynamics Distribution of wetland vegetation

Rebelo, L-M., 2010. Eco-hydrological characterization of inland wetlands in Africa using L-band SAR. IEEE Journal of Special Topics in Earth Observation and Remote Sensing Vol 3 No 2

Mapping Wet lands

www.iwmi.org

Water for a food-secure world

Water & Climate Atlas

• The IWMI World Water and Climate Atlas gives irrigation and agricultural planners rapid access to accurate data on climate and moisture availability for agriculture

• The Atlas includes monthly and annual summaries for:• precipitation, • temperature,• humidity,• sunshine, • Evaporation & evapotranspiration• wind speed, • rainfall,• frost

www.iwmi.org

Water for a food-secure world

Detail Presentations on

• RS & Smart ICT for Agricultural Water Management

• Monitor Droughts & Floods• Map Irrigated areas

Applications in Canal Irrigation Performance

Adequacy, Equity and Reliability

www.iwmi.org

Water for a food-secure world

Canal Irrigation Management in PakistanAdequacy, Equity and Reliability of Water Availability

Evaporative Fraction within Hakra, Punjab, Pakistan on 4/10/2012

Hakra Daily mean EF (2000-12)

20 irrigation seasons are visible (Large groups of val=1.0)Maybe few more, less visible.

Linking Remote Sensing Models and ICT

M2M

USE

SUPPLY

Central Processing Unit

Estimate AET

Estimate Performance

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Water for a food-secure world

Thank You