New Technologies to Facilitate the Planning Process to Manage
Water Over-Exploitation Prof Wim Bastiaanssen & Dr. Peter
Droogers
Slide 2
Ttan Balance inflow & outflow Cheema Ph.D. student TU-Delft
Expenditures exceeding income is not sustainable Reduce
expenditures = reduce evapotranspiration income expenditures
Slide 3
Water Resources Yemen Problem: Data is outdated, incomplete,
inconsistent & sometimes contradictory Source: Worldbank study
using public domain data
Slide 4
TRMM validation over Pakistan Manifold solutions exist Cheema
Ph.D. student TU-Delft Reduce abstractions of groundwater -Quota on
water use, well licences, stop subsidized diesel for pumps -Reduce
crop ET by improved irrigation technologies -Reuse urban,
industrial and irrigation water Control agricultural areas -Control
irrigated area (ha) -Control cropping intensity -Abandon certain
crops -Land retirement Rainwater harvesting -Local infiltration
dams -Constructing more reservoirs Crop productivity improvement
-New seeds -Better fertilizers -Optimal water supply Desalinization
Import food
Slide 5
Which tools are available to assist planning ? Cheema Ph.D.
student TU-Delft Remote sensing Water basin models Groundwater flow
models Climate models Water accounting GIS data Smart phone SMS
messages
Slide 6
Models are Required for Future Projection PAST FUTURE FUTURE: C
FUTURE: A Policies: A, B, C Policies: A, B, C Observations Remote
Sensing Simulation Models FUTURE: B
Slide 7
Many satellites provide free data
Slide 8
TRMM validation over Pakistan Satellite Image of Irrigation
Systems Siham Cheema Ph.D. student TU-Delft Situation 2006 Changes
2006 to 2009
RainfMM validation over Pakistan Rainfall trend 1998 to 2012
Cheema Ph.D. student TU-Delft
Slide 12
Modelling water basins Channel/Flood Plain Processes
Slide 13
Modelling Recharge and Runoff for period 2000-2009 (SPHY
model)
Slide 14
TRMM validation over Pakistan Remote sensing for calibrating
hydrological model Cheema Ph.D. student TU-Delft Remote sensing
Hydrological model
Slide 15
Change in precipitation (present vs. 2050) CMIP3 average 9 GCMS
- 2040-2050 relative to 2000-2009 So somewhat more rain in some
areas, but.
Slide 16
Change in Evapotranspiration (present vs. 2050), but.
evaporation also higher and demand for irrigation even much
larger
Slide 17
Water accounting
Slide 18
Smart phones Local farmers being supported
Slide 19
Water productivity gap Morocco (Doukkala)
Slide 20
Reduce irrigated area Saudi Arabia Ban on wheat
Slide 21
Water credit card Italy Pump stops working if water credits are
finished
Slide 22
China Plain: ET management
Slide 23
We need information to answer the following questions: Cheema
Ph.D. student TU-Delft How much water do we have ? Where is the
water going to ? Who is using the water ? What are the recharge
mechanisms ? What is the local sustainable aquifer yield ? What is
the remaining aquifer life ? Can we introduce water savings without
hampering crop production ? Geographical and hydrological data
provides the knowledge base
Slide 24
Tools create data at our fingertips Share the data via the
cloud !
